A communication method and apparatus

Abstract

This application relates to the field of communication technologies, and discloses a communication method and apparatus. The method includes: when a terminal device determines the transmission status of N time-frequency resource groups according to transmission indication information sent by a network device, if a certain time-frequency resource group is divided into a first half and a second half by one or more first symbols in the time domain, the first half of the time-frequency resource group may be merged into the previous time-frequency resource group of the time-frequency resource group, or the second half of the time-frequency resource group may be merged into the next time-frequency resource group of the time-frequency resource group, to determine the transmission status. This ensures the continuity of the time-frequency resource groups indicated by the transmission indication information in the time domain, can avoid unnecessary uplink transmission cancellation or downlink transmission interruption, and improve the capacity of the network.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a communication method and apparatus. Background Art

[0002] Ultra-reliable and low-latency communication (URLLC) is one of the three key services in fifth-generation (5G) mobile communication systems. Its primary application scenarios include autonomous driving and telemedicine, which place stringent demands on reliability and latency. URLLC service requirements include achieving 99.999% data transmission reliability, a latency of less than 1ms, and minimizing signaling overhead while maintaining high reliability and low latency.

[0003] A new type of downlink control information (DCI) is introduced in URLLC and is sent using DCI format 2_4. This DCI can be used to instruct a terminal device whether to cancel uplink transmission on the corresponding time-frequency resources. Therefore, it can also be called an uplink cancellation indication (CI). It can cancel the time-frequency resources scheduled for uplink transmission of a certain terminal device and give them to other terminal devices with more urgent uplink transmission services.

[0004] However, in systems such as time division duplexing (TDD), uplink and downlink symbols appear in separate time zones, leading to the problem that the time-frequency resources for uplink transmission canceled by the uplink CI indication are separated by downlink symbols in the time domain. This means that the time-frequency resources for uplink transmission canceled by the uplink CI indication span downlink symbols in the time domain. In practice, however, URLLC services typically do not use time-frequency resources that span multiple downlink symbols, which can cause uplink transmissions that could have been performed to be canceled, resulting in reduced network capacity. Summary of the Invention

[0005] The embodiments of the present application provide a communication method and apparatus to solve the problem of unnecessary uplink transmission cancellation or downlink transmission interruption caused by discontinuous time-frequency resources (groups) in the time domain, so as to improve the capacity of the network.

[0006] In a first aspect, an embodiment of the present application provides a communication method, which can be executed by a terminal device. The method includes: The terminal device determines N time-frequency resource groups, each of the N time-frequency resource groups includes at least one time-frequency resource, and N is a positive integer greater than or equal to 2; receiving transmission indication information from a network device, the transmission indication information includes a bit sequence for indicating the transmission status of the N time-frequency resource groups, N bit groups in the bit sequence correspond to the N time-frequency resource groups one by one, and each of the N bit groups includes at least one bit; performing data transmission with the network device according to the transmission status of each of the N time-frequency resource groups; where, when the i-th time-frequency resource group among the N time-frequency resource groups is separated by M first symbols in the time domain, M is a positive integer, the (i - 1)-th bit group in the bit sequence indicates the transmission status of the (i - 1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, i is a positive integer greater than or equal to 2 and less than or equal to N, or the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the (i + 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the (i + 1)-th time-frequency resource group, and i is a positive integer less than or equal to N - 1.

[0007] In an embodiment of the present application, the transmission indication information can be used to cancel uplink transmission or downlink transmission. When the transmission indication information is used to cancel uplink transmission, the transmission indication information can be an uplink cancellation indication for indicating whether the terminal device cancels uplink transmission on the corresponding time-frequency resource. At this time, the determined time-frequency resource groups usually only include uplink symbols, and the first symbols separating the time-frequency resource groups in the time domain are usually downlink symbols; when the transmission indication information is used to cancel downlink transmission, the transmission indication information can be a downlink interruption transmission indication for indicating whether there is downlink transmission on the corresponding time-frequency resource of the terminal device. At this time, the determined time-frequency resource groups usually only include downlink symbols, and the first symbols separating the time-frequency resource groups in the time domain are usually uplink symbols.

[0008] Using the above method, when the time-frequency resource group is separated by the first symbol in the time domain and divided into the first half and the second half, the first half of the time-frequency resource group can be merged into the previous time-frequency resource group of the time-frequency resource group, or the second half of the time-frequency resource group can be merged into the next time-frequency resource group of the time-frequency resource group to determine the transmission state, ensuring the continuity of the time-frequency resource group indicated by the transmission indication information in the time domain, and avoiding unnecessary uplink transmission cancellation or downlink transmission interruption, thereby improving the network capacity.

[0009] In a possible design, when the number of symbols of the i-th time-frequency resource group before the M first symbols is less than the number of symbols of the i-th time-frequency resource group after the M first symbols, the (i - 1)-th bit group in the bit sequence indicates the transmission states of the time-frequency resources of the (i - 1)-th time-frequency resource group and the i-th time-frequency resource group before the M first symbols, and the i-th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the i-th time-frequency resource group after the M first symbols, where i is a positive integer greater than or equal to 2 and less than or equal to N.

[0010] When the number of symbols of the i-th time-frequency resource group before the M first symbols is greater than or equal to the number of symbols of the i-th time-frequency resource after the M first symbols, the i-th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the i-th time-frequency resource group before the M first symbols, and the (i + 1)-th bit group in the bit sequence indicates the transmission states of the time-frequency resources of the i-th time-frequency resource group after the M first symbols and the (i + 1)-th time-frequency resource group, where i is a positive integer less than or equal to N - 1.

[0011] In the above design, when the time-frequency resource group is separated by M first symbols in the time domain and divided into the first half and the second half, the part with a smaller number of symbols included can be selected according to the number of symbols included in the first half and the second half of the time-frequency resource group, and merged into the adjacent time-frequency resource group to determine the transmission state, which is beneficial to ensuring the continuity of the time-frequency resource group indicated by the transmission indication information in the time domain and avoiding unnecessary uplink transmission cancellation or downlink transmission interruption.

[0012] In a possible design, when the number of symbols before the M first symbols in the i-th time-frequency resource group is 1 symbol or 2 symbols, the (i-1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the (i-1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, where i is a positive integer greater than or equal to 2 and less than or equal to N; or, when the number of symbols after the M first symbols in the i-th time-frequency resource group is 1 symbol or 2 symbols, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the (i + 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the (i + 1)-th time-frequency resource group, where i is a positive integer less than or equal to N - 1.

[0013] In the above design, when the time-frequency resource groups are separated by M first symbols in the time domain and divided into a first half and a second half, according to the number of symbols included in the first half and the second half of the time-frequency resource group, a part that meets the merging quantity (such as 1 symbol or 2 symbols, etc.) can be selected and merged into the adjacent time-frequency resource group to determine the transmission status, which is beneficial to ensuring the continuity of the time-frequency resource groups indicated by the transmission indication information in the time domain and avoiding unnecessary uplink transmission cancellation or downlink transmission interruption.

[0014] In a possible design, when the time domain position of the i-th time-frequency resource group is the time-frequency resource group with the earliest time domain position among the N time-frequency resource groups, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the (i + 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the (i + 1)-th time-frequency resource group.

[0015] In the above design, for the special case of the time-frequency resource group that is the first time-frequency resource group in the time domain among the N time-frequency resource groups and is separated by M first symbols in the time domain, the second half of this time-frequency resource group can be merged into the second time-frequency resource group in the time domain to determine the transmission status, so as to ensure the continuity of the time-frequency resource groups indicated by the transmission indication information in the time domain.

[0016] In a possible design, when the time-domain position of the i-th time-frequency resource group is the time-frequency resource group with the last time-domain position among the N time-frequency resource groups, the (i-1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the (i-1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the i-th time-frequency resource group after the M first symbols.

[0017] In the above design, for the time-frequency resource groups separated by M first symbols in the time domain, in the special case of the last time-frequency resource group among the N time-frequency resource groups in the time domain, the first half of this time-frequency resource group can be merged into the second-to-last time-frequency resource group in the time domain to determine the transmission status, so as to ensure the continuity of the time-frequency resource groups indicated by the transmission indication information in the time domain.

[0018] In a possible design, it is possible to merge only the first half or the second half of the time-frequency resource groups separated by the first symbol in the time domain with the adjacent time-frequency resource groups to determine the transmission status only when M is greater than or equal to the first threshold.

[0019] In the above design, when the time-frequency resource group appears separated by M downlink symbols in the time domain, if the number of separated downlink symbols is small, the transmission status of the time-frequency resources before the M downlink symbols and the time-frequency resources after the M downlink symbols in the time-frequency resource group is usually the same. When M is less than or equal to the first threshold, it is not necessary to merge the first half or the second half of the time-frequency resource groups separated by the first symbol in the time domain with the adjacent time-frequency resource groups, which is beneficial to reducing the computational complexity.

[0020] In a possible design, the method further includes: the terminal device receives data scheduling information from the network device, and the data scheduling information indicates the first time-frequency resource for data transmission; the data transmission with the network device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups includes: performing data transmission with the network device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups and the first time-frequency resource.

[0021] In the above design, the terminal device can perform data transmission with the network device based on the transmission status of the adjusted time-frequency resources, which is beneficial to improving the capacity of the network.

[0022] Second aspect, an embodiment of the present application provides a communication method, which can be executed by a network device. The method includes: The network device determines N time-frequency resource groups, each of the N time-frequency resource groups includes at least one time-frequency resource, and N is a positive integer greater than or equal to 2; Sending transmission indication information to a terminal device, the transmission indication information includes a bit sequence for indicating the transmission status of the N time-frequency resource groups, N bit groups in the bit sequence correspond to the N time-frequency resource groups one by one, and each of the N bit groups includes at least one bit; Performing data transmission with the terminal device according to the transmission status of each of the N time-frequency resource groups; where, when the i-th time-frequency resource group among the N time-frequency resource groups is separated by M first symbols in the time domain, M is a positive integer, the (i-1)-th bit group in the bit sequence indicates the transmission status of the (i-1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, i is a positive integer greater than or equal to 2 and less than or equal to N, or the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the (i+1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the (i+1)-th time-frequency resource group, i is a positive integer less than or equal to N-1.

[0023] In an embodiment of the present application, the transmission indication information can be used to cancel uplink transmission or to cancel downlink transmission. When the transmission indication information is used to cancel uplink transmission, the transmission indication information can be an uplink cancellation indication for indicating whether the terminal device cancels uplink transmission on the corresponding time-frequency resource. At this time, the determined time-frequency resource group usually only includes uplink symbols, and the first symbol separating the time-frequency resource groups in the time domain is usually a downlink symbol; when the transmission indication information is used to cancel downlink transmission, the transmission indication information can be a downlink interruption transmission indication for indicating whether there is downlink transmission on the corresponding time-frequency resource of the terminal device. At this time, the determined time-frequency resource group usually only includes downlink symbols, and the first symbol separating the time-frequency resource groups in the time domain is usually an uplink symbol.

[0024] In a possible design, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is less than the number of symbols of the \(i\)th time-frequency resource group after the \(M\) first symbols, the \((i - 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols, where \(i\) is a positive integer greater than or equal to 2 and less than or equal to \(N\).

[0025] When the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is greater than or equal to the number of symbols of the \(i\)th time-frequency resource after the \(M\) first symbols, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group, where \(i\) is a positive integer less than or equal to \(N - 1\).

[0026] In a possible design, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is 1 symbol or 2 symbols, the \((i - 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols, where \(i\) is a positive integer greater than or equal to \(2\) and less than or equal to \(N\); or when the number of symbols of the \(i\)th time-frequency resource group after the \(M\) first symbols is 1 symbol or 2 symbols, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group, where \(i\) is a positive integer less than or equal to \(N - 1\).

[0027] In a possible design, when the time-domain position of the \(i\)th time-frequency resource group is the time-frequency resource group with the earliest time-domain position among the \(N\) time-frequency resource groups, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group.

[0028] In a possible design, when the time-domain position of the i-th time-frequency resource group is the time-frequency resource group with the last time-domain position among the N time-frequency resource groups, the (i-1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the (i-1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the i-th time-frequency resource group after the M first symbols.

[0029] In a possible design, it is possible to merge only the first half or the second half of the time-frequency resource groups separated by the first symbol in the time domain with the adjacent time-frequency resource groups for indicating the transmission status only when M is greater than or equal to the first threshold.

[0030] In a possible design, the method further includes: the network device sending data scheduling information to the terminal device, the data scheduling information indicating the first time-frequency resource for data transmission; and performing data transmission with the terminal device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups, including: performing data transmission with the terminal device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups and the first time-frequency resource.

[0031] For the beneficial effects of the various possible designs in the second aspect above, reference can be made to the corresponding descriptions on the terminal device side and will not be repeated here.

[0032] In a third aspect, an embodiment of the present application provides a communication device, which has the function of implementing the method in the first aspect or any possible design of the first aspect. The function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units (modules) corresponding to the above functions, such as a transceiver unit and a processing unit.

[0033] In a possible design, the device can be a chip or an integrated circuit.

[0034] In a possible design, the device includes a processor and an interface circuit. The processor is coupled to the interface circuit and is used to implement the function of the method in the first aspect or any possible design of the first aspect. It can be understood that the interface circuit can be a transceiver or an input / output interface. The device may further include a memory, and the memory stores a program that can be executed by the processor to implement the function of the method in the first aspect or any possible design of the first aspect.

[0035] In a possible design, the device can be a terminal device.

[0036] Fourthly, an embodiment of the present application provides a communication device, which has the functions of implementing the methods in the above-mentioned second aspect or any possible design of the second aspect. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units (modules) corresponding to the above functions, such as a transceiver unit and a processing unit.

[0037] In a possible design, the device may be a chip or an integrated circuit.

[0038] In a possible design, the device includes a processor and an interface circuit. The processor is coupled to the interface circuit and is used to implement the functions of the methods in the above-mentioned second aspect or any possible design of the second aspect. It can be understood that the interface circuit may be a transceiver or an input / output interface. The device may further include a memory, and the memory stores a program that can be executed by the processor to implement the functions of the methods in the above-mentioned second aspect or any possible design of the second aspect.

[0039] In a possible design, the device may be a network device.

[0040] Fifthly, an embodiment of the present application provides a communication system, which may include a network device and a terminal device. The terminal device may execute the methods in the above-mentioned first aspect or any possible design of the first aspect, and the network device may execute the methods in the above-mentioned second aspect or any possible design of the second aspect.

[0041] Sixthly, an embodiment of the present application provides a computer-readable storage medium, on which a computer program or instruction is stored. When the computer program or instruction is executed by a communication device, the communication device is caused to execute the methods in the above-mentioned first aspect or any possible design of the first aspect, or execute the methods in the above-mentioned second aspect or any possible design of the second aspect.

[0042] Seventhly, an embodiment of the present application further provides a computer program product, including a computer program or instruction. When the computer program or instruction is executed by a communication device, it can implement the methods in the above-mentioned first aspect or any possible design of the first aspect, or implement the methods in the above-mentioned second aspect or any possible design of the second aspect.

[0043] Eighthly, the present application further provides a chip, which is used to implement the methods in the above-mentioned first aspect or any possible design of the first aspect, or implement the methods in the above-mentioned second aspect or any possible design of the second aspect.

[0044] For the technical effects achievable in the third to eighth aspects above, please refer to the technical effects achievable in the first to second aspects above, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Schematic diagram of the network architecture of the communication system applicable to the embodiment of the present application;

[0046] Figure 2 Schematic diagram of the communication process provided by the embodiment of the present application;

[0047] Figure 3 One of the schematic diagrams of the listening opportunity for the uplink cancellation indication provided by the embodiment of the present application;

[0048] Figure 4 Another schematic diagram of the listening opportunity for the uplink cancellation indication provided by the embodiment of the present application;

[0049] Figure 5 Schematic diagram of the time-domain grouping provided by the embodiment of the present application;

[0050] Figure 6 Schematic diagram of the frequency-domain grouping provided by the embodiment of the present application;

[0051] Figure 7 Schematic diagram of the time-frequency resource division provided by the embodiment of the present application;

[0052] Figure 8 Schematic diagram of the correspondence between the bit sequence and the time-frequency resource provided by the embodiment of the present application;

[0053] Figure 9 Schematic diagram of the time slot in the TDD system provided by the embodiment of the present application;

[0054] Figure 10 Schematic diagram of the determination of the time-domain resource area of the uplink cancellation indication provided by the embodiment of the present application;

[0055] Figure 11 One of the schematic diagrams of the bit group indicating the time-frequency resource group provided by the embodiment of the present application;

[0056] Figure 12 Another schematic diagram of the bit group indicating the time-frequency resource group provided by the embodiment of the present application;

[0057] Figure 13 Schematic diagram of the transmission state of the time-frequency resource indicated by the data scheduling information provided by the embodiment of the present application;

[0058] Figure 14 One of the schematic diagrams of the communication device provided by the embodiment of the present application;

[0059] Figure 15Schematic diagram II of the communication device provided by the embodiment of the present application. Detailed implementation manners

[0060] The technical solution of the embodiment of the present application can be applied to various communication systems, such as a Long-Term Evolution (LTE) system, an LTE Time Division Duplex (TDD), a 5th Generation (5G) mobile communication system or a New Radio (NR) system, or can be applied to future communication systems or other similar communication systems, such as a 6G system, etc. Specifically, the structure of the communication system to which the embodiment of the present application is applied can be as Figure 1 shown. The communication system includes a network device and at least one terminal device (such as Figure 1 the terminal devices 1 to 6 shown). The network device can communicate with at least one terminal device (such as terminal device 1) through an uplink (UL) and a downlink (DL).

[0061] It should be understood that there may also be multiple network devices in the communication system, and one network device can serve multiple terminal devices. The embodiment of the present application does not limit the number of network devices and the number of terminal devices included in the communication system. Figure 1 The network device in Figure 1 and each terminal device in some or all of the at least one terminal device can implement the technical solution provided by the embodiment of the present application. In addition,

[0062] For the convenience of those skilled in the art to understand, some terms in the embodiment of the present application are explained below.

[0063] 1) A terminal device is a device with wireless transceiver functions. It can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, satellites, etc.). The terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver functions, a mobile Internet device, a wearable device, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of this application do not limit the application scenarios. The terminal device can sometimes also be called a user equipment (UE), a mobile station, a remote station, etc. The embodiments of this application do not limit the specific technologies, device forms, and names adopted by the terminal device.

[0064] As an example rather than a limitation, in the embodiments of this application, the terminal device can also be a wearable device. A wearable device can also be called a wearable intelligent device or a smart wearable device, etc. It is the general name of devices developed by applying wearable technologies to intelligentize daily wear, such as glasses, gloves, watches, clothing, shoes, etc. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can realize complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart helmets, smart jewelry, etc.

[0065] The terminal device in the embodiments of this application can also be an in-vehicle module, an in-vehicle component, an in-vehicle chip, or an in-vehicle unit built into a vehicle as one or more components or units. The vehicle can implement the method of this application through the built-in in-vehicle module, in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit.

[0066] 2) A network device, also known as an access network device, is a device in a network used to connect a terminal device to a wireless network. The network device can be a node in a wireless access network, also called a base station, or a RAN node (or device). The network device can be an evolved NodeB (eNodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-A), or it can be a next generation node B (gNodeB) in a 5G NR system, or it can also be a transmission reception point (TRP), a base band unit (BBU), or a WiFi access point (AP), etc. Or it can also be a central unit (CU) and a distributed unit (DU). The embodiments of the present application do not limit this. In the scenario of separate deployment where the access network device includes a CU and a DU, the CU supports protocols such as radio resource control (RRC), packet data convergence protocol (PDCP), and service data adaptation protocol (SDAP); the DU mainly supports the radio link control (RLC) layer protocol, the medium access control (MAC) layer protocol, and the physical layer protocol.

[0067] 3) Transmission indication information. In the embodiments of the present application, the transmission indication information is a type of downlink control information (DCI), which can be an uplink cancellation indication for indicating whether the terminal device cancels the uplink transmission on the corresponding time-frequency resource; it can also be a downlink interrupted transmission indication (Interrupted transmission indication, INT) for indicating whether there is a downlink transmission of the terminal device on the corresponding time-frequency resource. The network device can send the transmission indication information to the terminal device through a downlink control channel, such as a physical downlink control channel (PDCCH). Specifically, both the uplink cancellation indication (UL CI) and the downlink interrupted transmission indication (DL INT) can include a bit sequence for indicating the transmission status of the time-frequency resource. Among them, for the transmission status corresponding to the uplink cancellation indication, it is whether to cancel the uplink transmission, and for the transmission status corresponding to the downlink interrupted transmission indication, it is whether there is a downlink transmission. Different from the uplink cancellation indication where the i-th bit in the included bit sequence indicates whether to cancel the uplink transmission of the terminal device on the i-th time-frequency resource (the time-frequency resource corresponding to the i-th bit), the i-th bit in the bit sequence corresponding to the downlink interrupted transmission indication indicates whether there is a downlink transmission of the terminal device on the time-frequency resource located at the i-th time-frequency resource. After receiving the downlink interrupted transmission indication, if the terminal device determines that there is no downlink transmission of its own on the i-th time-frequency resource, it can stop receiving on the i-th time-frequency resource (when the DL INT is sent before the i-th time-frequency resource), or it can discard the data corresponding to the i-th time-frequency resource from the already received data or set the data part corresponding to the i-th time-frequency resource to zero (when the DL INT is sent after the i-th time-frequency resource).

[0068] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0069]

Embodiment 1

[0070] Figure 2 A schematic diagram of a communication process provided for the embodiments of the present application, and the process includes:

[0071] S201: The network device and the terminal device determine N time-frequency resource groups, and each time-frequency resource group in the N time-frequency resource groups includes at least one time-frequency resource, where N is a positive integer greater than or equal to 2.

[0072] Specifically, the network device can send high-layer signaling to the terminal device to configure the N time-frequency resource groups.

[0073] In an embodiment of the present application, a network device may configure a time-frequency resource region indicated by transmission indication information (such as an uplink cancellation indication or a downlink interruption transmission indication) for a terminal device through a high-layer signaling (such as an RRC signaling, etc.).

[0074] Taking the example that a network device configures a time-frequency resource region indicated by an uplink cancellation indication for a terminal device through a high-layer signaling (such as timeFrequencyRegion) as an example. Specifically, the network device may configure the number B of physical resource blocks (PRBs) through the frequencyRegionforCI parameter in timeFrequencyRegion CI , and configure the number T of orthogonal frequency division multiplexing (OFDM) symbols through the timeDurationforCI parameter in timeFrequencyRegion CI . It should be noted that in an embodiment of the present application, an OFDM symbol may be simply referred to as a symbol.

[0075] Among them, if the monitoring period of the uplink cancellation indication is greater than 1 slot, or the monitoring period of the uplink cancellation indication is equal to 1 slot and there is only 1 monitoring occasion within 1 slot, then there is at most 1 monitoring occasion of the uplink cancellation indication within each slot. In this case, T CI indicates that the time region is equal to the monitoring period of the uplink cancellation indication, which may be equal to 1 slot or greater than 1 slot. As Figure 3 shown, in FDD, the monitoring period of the uplink cancellation indication is greater than 1 slot and there is only 1 monitoring occasion within 1 slot, and the time region indicated by T CI is equal to the monitoring period of the uplink cancellation indication and is greater than one slot.

[0076] If the monitoring period of the uplink cancellation indication is equal to 1 slot and there are more than 1 monitoring occasions within 1 slot, then the number of monitoring occasions of the uplink cancellation indication within 1 slot may be greater than 1. In this case, T CI indicates that the time region may not be greater than 1 slot, and the value of T CI may be a value in the set {2, 4, 7, 14}, and the unit is a symbol. As Figure 4 shown, in FDD, the monitoring period of the uplink cancellation indication is equal to 1 slot and there are more than 1 monitoring occasions within 1 slot, and the time region indicated by T CI may be less than the number of symbols corresponding to 1 slot. In Figure 3 and Figure 4Among them, TA can represent time alignment, for example, it can be a timing advance, which is used for time alignment between downlink and uplink. X represents the effective time of the uplink cancellation indication, that is, the time interval from when the terminal device receives the uplink cancellation indication (or listening opportunity) to the time-frequency resource indicated by the uplink cancellation indication. Or it can also be understood as the time interval from the end symbol of the uplink cancellation indication (or listening opportunity) to the start symbol of the time-frequency resource indicated by the uplink cancellation indication.

[0077] The network device can also configure, for the terminal device, the number of bits X included in the bit sequence in the uplink cancellation indication through higher-layer signaling (such as CI-PayloadSize), and the value of X can be a value in the set {1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 56, 112}, and the unit is bits.

[0078] Through the above configuration, a time-frequency resource area can be indicated for each listening opportunity of the uplink cancellation indication of the terminal device. For example: the time-frequency resource area indicated for the listening opportunity 1 of the uplink cancellation indication includes, in the time domain, starting from the first symbol after the listening opportunity 1 of the uplink cancellation indication and after the effective time of the uplink cancellation indication for T CI symbols, and in the frequency domain includes B CI PRBs. Among them, the effective time of the uplink cancellation indication can be represented as T, and the value of this T is related to the time T proc corresponding to the physical uplink shared channel (PUSCH) processing capability 2.

[0079] Furthermore, the network device can also configure the number of groups G into which the above T CI symbols are divided through the timeGranularityforCI parameter in timeFrequencyRegion CI . The value of this G CI can be a value in the set {1, 2, 4, 7, 14, 28}. Correspondingly, the number of groups N CI into which B BI PRBs are divided can be determined according to the number of bits X included in the bit sequence in the uplink cancellation indication and the number of groups G into which the T CI symbols in the time domain are divided, and N CI = X / G BI . CI .

[0080] In addition, in order to avoid that the T CI symbols in the time domain cannot be divided by G CIThe groups are evenly divided. In the embodiments of the present application, the first group in each of the groups contains symbols, and each of the remaining groups contains CI T = 7, G CI = 7, B CI = 10, X = 21 as an example. Referring to Figure 5 as shown, 7 symbols are divided into 7 time-domain groups, and each time-domain group has only 1 symbol. Similarly, in order to avoid that B CI PRBs in the frequency domain cannot be evenly divided by N BI groups. In the embodiments of the present application, the first group in each of the groups contains PRBs, and each of the remaining groups contains represents rounding up, represents rounding down. Taking T CI = 7, G CI = 7, B CI = 10, X = 21 as an example, N BI = X / G CI = 3. Referring to Figure 6 as shown, 10 PRBs are divided into 3 frequency-domain groups. Each of the first 2 frequency-domain groups contains 3 PRBs, and the last frequency-domain group contains 4 PRBs.

[0081] In this way, according to the above T CI , B CI , G CI , N BI (X / G CI ), a time-frequency resource region indicated for each uplink cancellation indication listening opportunity of the terminal device can be divided into multiple time-frequency resources, and one or more time-frequency resources corresponding to the same time-domain range constitute a time-frequency resource group, that is, one or more time-frequency resources belonging to the same time-domain group constitute a time-frequency resource group. By way of example, a time-frequency resource region indicated for an uplink cancellation indication listening opportunity can be divided into the form shown in Figure 7 . Figure 7 Each square in

[0082] In a possible embodiment, the network device may also send high-layer signaling for different listening opportunities of the uplink cancellation indication of the terminal device respectively. Each high-layer signaling sent by the network device is only used to configure a time-frequency resource region corresponding to the upcoming listening opportunity of the uplink cancellation indication of the terminal device, and is used for the division of time-frequency resources and time-frequency resource groups in the time-frequency resource region.

[0083] For the downlink interruption transmission indication, the network device may also configure the time-frequency resource region indicated by the downlink interruption transmission indication for the terminal device through high-layer signaling similar to the uplink cancellation indication, and is used for the division of time-frequency resources and time-frequency resource groups in the time-frequency resource region, which will not be elaborated here.

[0084] S202: The network device sends transmission indication information to the terminal device, and the terminal device receives the transmission indication information.

[0085] Among them, the transmission indication information includes a bit sequence for indicating the transmission status of the N time-frequency resource groups. The N bit groups in the bit sequence correspond to the N time-frequency resource groups one by one, and each of the N bit groups includes at least one bit.

[0086] Still taking the transmission indication information as the uplink cancellation indication as an example, the bit sequence included in the uplink cancellation indication information may be a sequence including X bits. Each bit in the bit sequence corresponds to a piece of time-frequency resource and is used to indicate whether to cancel the uplink transmission of the terminal device on this time-frequency resource. Whether to cancel the uplink transmission of the terminal device on this time-frequency resource may also be understood as whether to allow the terminal device to perform uplink transmission on this time-frequency resource, or whether the terminal device can perform uplink transmission on this time-frequency resource. Additionally, similar to the X time-frequency resources being divided into N time-frequency resource groups (time-domain groups), in the embodiments of this application, X bits correspond to N bit groups, and the N bit groups correspond to the N time-frequency resource groups one by one.

[0087] Exemplarily, referring to Figure 8As shown in the figure, the bit sequence may exist in the form of a two-dimensional bitmap. X bits in the bit sequence correspond to X time-frequency resources one by one. If the value of a certain bit is 1, it can indicate canceling the uplink transmission of the terminal device on the time-frequency resource corresponding to this bit, that is, the terminal device cannot perform uplink transmission on the time-frequency resource corresponding to this bit; if the value of a certain bit is 0, it can indicate not canceling the uplink transmission of the terminal device on the time-frequency resource corresponding to this bit, that is, the terminal device can perform uplink transmission on the time-frequency resource corresponding to this bit. Optionally, in the embodiments of this application, in the bit sequence, according to the grouping of the indicated time-frequency resource regions, the bit sequence is grouped. For example, when the bit sequence exists in the form of a two-dimensional bitmap, each column is a bit group, and each bit group corresponds to a time-domain group, that is, each bit group corresponds to a time-frequency resource group.

[0088] In a possible embodiment, the uplink cancellation indication sent by the network device to the terminal device may be an uplink cancellation indication for a group of terminal devices, and the group of terminal devices may include one or more terminal devices. Each terminal device in the group of terminal devices can correspond to a block of indication area in the uplink cancellation indication, which is used to carry the information of the uplink cancellation indication sent to this terminal device. Or it can also be understood that the uplink cancellation indication includes one or more information blocks, each terminal device in the group of terminal devices corresponds to an information block in the uplink cancellation indication, and each information block contains the information of the uplink cancellation indication corresponding to the terminal device.

[0089] In the TDD system, the uplink and downlink symbols appear at different times. As Figure 9 shown, where F represents a flexible slot, U represents an uplink slot, and D represents a downlink slot. Although the configuration value of T corresponding to the time domain in the high-layer signaling is 5 slots, and in NR, each slot has 14 symbols in the normal cyclic prefix (normal CP), so there are a total of 5 * 14 = 70 symbols. However, for the uplink cancellation indication, the symbols corresponding to the downlink slots and the synchronization signal block (SSB) area need to be excluded, and the remaining symbols are spliced together to be the real time-domain resource area of the uplink cancellation indication (UL CI time region). For example, as CI shown, the original time-domain resource area of the uplink cancellation indication is 70 symbols (5 slots), but after excluding the semi-static downlink slots, there are only 3 slots and 42 symbols left. Suppose G Figure 10 shown, the original time-domain resource area of the uplink cancellation indication is 70 symbols (5 slots), but after excluding the semi-static downlink slots, there are only 3 slots and 42 symbols left. CI= 7. If 42 symbols are evenly divided into 7 time-domain groups, among the 6 symbols in the 5th time-domain group, there is an actual interval of 2 downlink time slots between the first 4 symbols and the last 2 symbols. Therefore, the time-domain groups (i.e., time-frequency resource groups) divided according to high-layer signaling may appear to be separated by M downlink symbols in the time domain, that is, among the multiple time-frequency resources in a certain time-domain group, there is a situation where they are separated by M downlink symbols in the time domain, where M is a positive integer. Since the network device usually does not schedule time-frequency resources for the terminal device across symbols, in order to avoid unnecessary uplink transmissions from being cancelled, in the embodiments of the present application, when the time-domain group (i.e., time-frequency resource group) appears to be separated by M downlink symbols in the time domain, the indication of the time-frequency resource group by the bit groups in the bit sequence can be adjusted. Taking the time-frequency resource group separated by M downlink symbols in the time domain as the i-th time-frequency resource group as an example:

[0090] Method 1: Combine the first half of the i-th time-frequency resource group (the time-frequency resources before M downlink symbols) with the adjacent time-frequency resource group for indicating (or determining) the transmission state. Specifically, the (i - 1)-th bit group in the bit sequence indicates the transmission state of the (i - 1)-th time-frequency resource group and the time-frequency resources of the i-th time-frequency resource group before the M downlink symbols, and the i-th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the i-th time-frequency resource group after the M downlink symbols.

[0091] For example, as Figure 11 shown, the 3rd time-frequency resource group is separated by M downlink symbols in the time domain. Among them, there are 2 uplink symbols before the M downlink symbols and 2 uplink symbols after the M downlink symbols. Then, the 2nd bit group in the bit sequence indicates the transmission state of the 2 uplink symbols of the 2nd time-frequency resource group and the 3rd time-frequency resource group before the M downlink symbols, and the 3rd bit group in the bit sequence indicates the transmission state of the 2 uplink symbols of the 3rd time-frequency resource group after the M downlink symbols.

[0092] Method 2: Combine the second half of the i-th time-frequency resource group (the time-frequency resources after M downlink symbols) with the adjacent time-frequency resource group for indicating (or determining) the transmission state. Specifically, the i-th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the i-th time-frequency resource group before the M downlink symbols, and the (i + 1)-th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the i-th time-frequency resource group after the M downlink symbols and the (i + 1)-th time-frequency resource group.

[0093] For example, as Figure 12As shown, the third time-frequency resource group is separated by M downlink symbols in the time domain, where there are 2 uplink symbols before the M downlink symbols and 2 uplink symbols after the M downlink symbols. Then, the third bit group in the bit sequence indicates the transmission status of the 2 uplink symbols before the M downlink symbols in the third time-frequency resource group, and the fourth bit group in the bit sequence indicates the transmission status of the 2 uplink symbols after the M downlink symbols in the third time-frequency resource group and the fourth time-frequency resource group.

[0094] Method 3: Based on the number of symbols included in the first half and the second half of the i-th time-frequency resource group respectively, select the part with the smaller number of included symbols and merge it into the adjacent time-frequency resource group for indicating (or determining) the transmission status. Specifically, when the number of symbols of the i-th time-frequency resource group before the M downlink symbols is less than the number of symbols of the i-th time-frequency resource group after the M downlink symbols, the (i - 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the (i - 1)-th time-frequency resource group and the i-th time-frequency resource group before the M downlink symbols, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the i-th time-frequency resource group after the M downlink symbols; when the number of symbols of the i-th time-frequency resource group before the M downlink symbols is greater than or equal to the number of symbols of the i-th time-frequency resource after the M downlink symbols, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the i-th time-frequency resource group before the M downlink symbols, and the (i + 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the i-th time-frequency resource group after the M downlink symbols and the (i + 1)-th time-frequency resource group.

[0095] Of course, it can also be that when the number of symbols of the i-th time-frequency resource group before the M downlink symbols is less than or equal to the number of symbols of the i-th time-frequency resource group after the M downlink symbols, the (i - 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the (i - 1)-th time-frequency resource group and the i-th time-frequency resource group before the M downlink symbols, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the i-th time-frequency resource group after the M downlink symbols; when the number of symbols of the i-th time-frequency resource group before the M downlink symbols is greater than the number of symbols of the i-th time-frequency resource after the M downlink symbols, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the i-th time-frequency resource group before the M downlink symbols, and the (i + 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the i-th time-frequency resource group after the M downlink symbols and the (i + 1)-th time-frequency resource group.

[0096] Method 4: Based on the number of symbols included in the first half and the second half of the \(i\)th time-frequency resource group, select the part that meets the merging quantity (such as 1 symbol or 2 symbols, etc.), merge it into the adjacent time-frequency resource group, and indicate (or determine) the transmission state. Specifically, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is 1 symbol or 2 symbols, the \((i - 1)\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \(i\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols, where \(i\) is a positive integer greater than or equal to 2 and less than or equal to \(N\); or, when the number of symbols of the \(i\)th time-frequency resource group after the \(M\) first symbols is 1 symbol or 2 symbols, the \(i\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group, where \(i\) is a positive integer less than or equal to \(N - 1\).

[0097] In addition, for the special cases where the \(i\)th time-frequency resource group is the first time-frequency resource group in the time domain or the last time-frequency resource group in the time domain, in the embodiments of the present application, when the time-domain position of the \(i\)th time-frequency resource group is the time-frequency resource group with the most forward time-domain position among the \(N\) time-frequency resource groups (that is, when the \(i\)th time-frequency resource group is the first time-frequency resource group in the time domain), the \(i\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) downlink symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) downlink symbols and the \((i + 1)\)th time-frequency resource group.

[0098] When the time-domain position of the \(i\)th time-frequency resource group is the time-frequency resource group with the most backward time-domain position among the \(N\) time-frequency resource groups (that is, when the \(i\)th time-frequency resource group is the last time-frequency resource group in the time domain), the \((i - 1)\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) downlink symbols, and the \(i\)th bit group in the bit sequence indicates the transmission state of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) downlink symbols.

[0099] In addition, for the case where there may be only one time-frequency resource group, that is, the case where N = 1, in the embodiments of the present application, when there is only one time-frequency resource group, even if the time-frequency resource group is separated by M downlink symbols in the time domain, the bit group corresponding to the time-frequency resource group is still used to directly indicate the time-frequency resource group.

[0100] In addition, when the time-domain grouping (i.e., the time-frequency resource group) appears to be separated by M downlink symbols in the time domain, if the number of separated downlink symbols is small, the transmission states of the time-frequency resources before the M downlink symbols and the time-frequency resources after the M downlink symbols in the time-frequency resource group are usually the same. Therefore, in a possible embodiment, when the time-domain grouping (i.e., the time-frequency resource group) appears to be separated by M downlink symbols in the time domain, before adjusting the indication of the time-frequency resource group by the bit group in the bit sequence, it can also be determined whether M is greater than or equal to a first threshold, and only when M is greater than or equal to the first threshold, the indication of the time-frequency resource group by the bit group in the bit sequence is adjusted, where the first threshold may be one or more symbols, or may be the number of symbols corresponding to one or more time slots, the first threshold is predefined by the protocol, or the first threshold is determined by the network device and configured to the terminal device through signaling.

[0101] In addition, the types of the M downlink symbols can be specified. They can be semi-static downlink symbols configured by the network device to the terminal device through high-layer signaling, or can be downlink symbols corresponding to the SS / PBCH blocks (blocks) configured by the network device to the terminal device, where SS is the synchronization signal (synchronization signal), PBCH is the physical broadcast channel (physical broadcast channel), and SS / PBCH blocks are a set of time-frequency resources for transmitting SS and PBCH.

[0102] By adjusting the indication of the time-frequency resource group by the bit group in the bit sequence as described above, the problem that the uplink cancellation indication sent by the network device indicates the transmission state of the time-frequency resources in the time-frequency resource group across symbols can be effectively avoided.

[0103] For the downlink interruption transmission indication, the time-frequency resource area indicated by the downlink interruption transmission indication configured by the network device for the terminal device usually only includes downlink symbols, and there is a problem that the time-frequency resource group spans M uplink symbols. For the adjustment of the indication of the time-frequency resource group by the bit group in the bit sequence included in the downlink interruption transmission indication, it can refer to the adjustment of the indication of the time-frequency resource group by the bit group in the bit sequence included in the uplink cancellation indication above. For the repeated parts, they will not be elaborated again.

[0104] In addition, it should be noted that the terminal device or the network device can determine N time-frequency resource groups according to the high-layer signaling, either before receiving the transmission indication information or after receiving the transmission indication information. For example, after receiving the transmission indication information A, the network device determines the N time-frequency resource groups indicated by the transmission indication information A according to the high-layer signaling.

[0105] S203: The network device sends data scheduling information to the terminal device, and the terminal device receives the data scheduling information.

[0106] Among them, the data scheduling information indicates the first time-frequency resource for data transmission.

[0107] It can be understood that the network device can send the data scheduling information to the terminal device before sending the transmission indication information to the terminal device, or after sending the transmission indication information to the terminal device, or can also send it to the terminal device simultaneously with the transmission indication information. The embodiments of the present application do not limit this.

[0108] S204: The terminal device and the network device perform data transmission based on the transmission status of each time-frequency resource group in the N time-frequency resource groups and the first time-frequency resource.

[0109] Still taking the transmission indication information as the uplink cancellation indication as an example, referring to Figure 13 As shown, the network device indicates that the first time-frequency resource is the time-frequency resource corresponding to PUSCH1. In the time-frequency resource group corresponding to PUSCH1, only the transmission status of the third time-frequency resource group is not to cancel the uplink transmission of the terminal device. The terminal device only performs uplink data transmission on the PRBs occupied by PUSCH1 in the third time-frequency resource group, and the network device receives the uplink data sent by the terminal device on the PRBs occupied by PUSCH1 in the third time-frequency resource group.

[0110] Correspondingly, for the downlink interruption transmission indication, the terminal device can only receive downlink data on the time-frequency resources where there is downlink transmission of the terminal device in the transmission status.

[0111] The above mainly introduces the solution provided by this application from the perspective of the interaction between network devices and terminal devices. It can be understood that, in order to implement the above functions, each network element includes the corresponding hardware structure and / or software module (or unit) for executing each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this article, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described function for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0112] Figure 13 and Figure 14 FIG. shows a schematic structural diagram of a possible communication device provided for an embodiment of this application. These communication devices can be used to implement the functions of the terminal device or network device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiments of this application, the communication device can be Figure 1 any one of the terminal devices in Figure 1 or the network device in

[0113] such as Figure 14 shown. The communication device 1400 may include: a processing unit 1402 and a transceiver unit 1403, and may further include a storage unit 1401. The communication device 1400 is used to implement the functions of the terminal device or network device in the method embodiment shown in the above Figure 2 .

[0114] In a possible design, the processing unit 1402 is used to implement the corresponding processing functions. The transceiver unit 1403 is used to support the communication between the communication device 1400 and other network entities. The storage unit 1401 is used to store the program code and / or data of the communication device 1400. Optionally, the transceiver unit 1403 may include a receiving unit and / or a sending unit, which are respectively used to perform receiving and sending operations.

[0115] When the communication device 1400 is used to implement Figure 2When implementing the functions of the terminal device in the method embodiments shown: The processing unit 1402 is configured to determine N time-frequency resource groups, each of the N time-frequency resource groups includes at least one time-frequency resource, and N is a positive integer greater than or equal to 2; The transceiver unit 1403 is configured to receive transmission indication information from a network device, the transmission indication information includes a bit sequence for indicating the transmission status of the N time-frequency resource groups, N bit groups in the bit sequence correspond to the N time-frequency resource groups one by one, and each of the N bit groups includes at least one bit; And perform data transmission with the network device according to the transmission status of each of the N time-frequency resource groups.

[0116] Wherein, when the i-th time-frequency resource group among the N time-frequency resource groups is separated by M first symbols in the time domain, M is a positive integer, the (i - 1)-th bit group in the bit sequence indicates the transmission status of the (i - 1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, i is a positive integer greater than or equal to 2 and less than or equal to N, or the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the (i + 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the (i + 1)-th time-frequency resource group, i is a positive integer less than or equal to N - 1.

[0117] Optionally, the transmission indication information can be used to cancel uplink transmission or downlink transmission. When the transmission indication information is used to cancel uplink transmission, the transmission indication information can be an uplink cancellation indication for indicating whether the terminal device cancels uplink transmission on the corresponding time-frequency resource. At this time, the determined time-frequency resource group usually only includes uplink symbols, and the first symbol separating the time-frequency resource groups in the time domain is usually a downlink symbol; When the transmission indication information is used to cancel downlink transmission, the transmission indication information can be a downlink interruption transmission indication for indicating whether there is downlink transmission on the corresponding time-frequency resource for the terminal device. At this time, the determined time-frequency resource group usually only includes downlink symbols, and the first symbol separating the time-frequency resource groups in the time domain is usually an uplink symbol.

[0118] In a possible design, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is less than the number of symbols of the \(i\)th time-frequency resource group after the \(M\) first symbols, the \((i - 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols, where \(i\) is a positive integer greater than or equal to 2 and less than or equal to \(N\).

[0119] In a possible design, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is greater than or equal to the number of symbols of the \(i\)th time-frequency resource after the \(M\) first symbols, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group, where \(i\) is a positive integer less than or equal to \(N - 1\).

[0120] In a possible design, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is 1 symbol or 2 symbols, the \((i - 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols, where \(i\) is a positive integer greater than or equal to 2 and less than or equal to \(N\); or when the number of symbols of the \(i\)th time-frequency resource group after the \(M\) first symbols is 1 symbol or 2 symbols, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group, where \(i\) is a positive integer less than or equal to \(N - 1\).

[0121] In a possible design, when the time-domain position of the \(i\)th time-frequency resource group is the time-frequency resource group with the earliest time-domain position among the \(N\) time-frequency resource groups, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group.

[0122] In a possible design, when the time domain position of the i-th time-frequency resource group is the time-frequency resource group with the last time domain position among the N time-frequency resource groups, the (i-1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the (i-1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the i-th time-frequency resource group after the M first symbols.

[0123] In a possible design, only when M is greater than or equal to a first threshold, the first half or the second half of the time-frequency resource groups separated by the first symbol in the time domain can be merged with adjacent time-frequency resource groups to determine the transmission status.

[0124] In a possible design, the transceiver unit 1403 is further configured to receive data scheduling information from a network device, where the data scheduling information indicates a first time-frequency resource for data transmission; when the processing unit 1402 performs data transmission with the network device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups, it is specifically configured to perform data transmission with the network device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups and the first time-frequency resource.

[0125] When the communication device 1400 is used to implement Figure 2 the functions of the network device in the method embodiments shown: The processing unit 1402 is configured to determine N time-frequency resource groups, where each time-frequency resource group in the N time-frequency resource groups includes at least one time-frequency resource, and N is a positive integer greater than or equal to 2; the transceiver unit 1403 is configured to send transmission indication information to a terminal device, where the transmission indication information includes a bit sequence for indicating the transmission status of the N time-frequency resource groups, the N bit groups in the bit sequence correspond to the N time-frequency resource groups one by one, and each bit group in the N bit groups includes at least one bit; and perform data transmission with the terminal device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups.

[0126] Wherein, when the i-th time-frequency resource group in the N time-frequency resource groups is separated by M first symbols in the time domain, M is a positive integer, the (i-1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the (i-1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, i is a positive integer greater than or equal to 2 and less than or equal to N, or the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the (i + 1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the (i + 1)-th time-frequency resource group, i is a positive integer less than or equal to N - 1.

[0127] Optionally, the transmission indication information can be used to cancel uplink transmission or downlink transmission. When the transmission indication information is used to cancel uplink transmission, the transmission indication information can be an uplink cancellation indication for indicating whether the terminal device cancels uplink transmission on the corresponding time-frequency resources. At this time, the determined time-frequency resource group usually only contains uplink symbols, and the first symbol separating the time-frequency resource groups in the time domain is usually a downlink symbol. When the transmission indication information is used to cancel downlink transmission, the transmission indication information can be a downlink interruption transmission indication for indicating whether there is downlink transmission on the corresponding time-frequency resources for the terminal device. At this time, the determined time-frequency resource group usually only contains downlink symbols, and the first symbol separating the time-frequency resource groups in the time domain is usually an uplink symbol.

[0128] In a possible design, when the number of symbols before the M first symbols in the i-th time-frequency resource group is less than the number of symbols after the M first symbols in the i-th time-frequency resource group, the (i-1)-th bit group in the bit sequence indicates the transmission status of the time-frequency resources in the (i-1)-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, i is a positive integer greater than or equal to 2 and less than or equal to N.

[0129] In a possible design, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is greater than or equal to the number of symbols of the \(i\)th time-frequency resource after the \(M\) first symbols, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group, where \(i\) is a positive integer less than or equal to \(N - 1\).

[0130] In a possible design, when the number of symbols of the \(i\)th time-frequency resource group before the \(M\) first symbols is 1 symbol or 2 symbols, the \((i - 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols, where \(i\) is a positive integer greater than or equal to 2 and less than or equal to \(N\); or, when the number of symbols of the \(i\)th time-frequency resource group after the \(M\) first symbols is 1 symbol or 2 symbols, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group, where \(i\) is a positive integer less than or equal to \(N - 1\).

[0131] In a possible design, when the time-domain position of the \(i\)th time-frequency resource group is the time-frequency resource group with the earliest time-domain position among the \(N\) time-frequency resource groups, the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \((i + 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols and the \((i + 1)\)th time-frequency resource group.

[0132] In a possible design, when the time-domain position of the \(i\)th time-frequency resource group is the time-frequency resource group with the latest time-domain position among the \(N\) time-frequency resource groups, the \((i - 1)\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \((i - 1)\)th time-frequency resource group and the \(i\)th time-frequency resource group before the \(M\) first symbols, and the \(i\)th bit group in the bit sequence indicates the transmission status of the time-frequency resources of the \(i\)th time-frequency resource group after the \(M\) first symbols.

[0133] In a possible design, only when M is greater than or equal to the first threshold, the first half or the second half of the time-frequency resource group separated by the first symbol in the time domain is merged with an adjacent time-frequency resource group to indicate the transmission state.

[0134] In a possible design, the transceiver unit 1403 is further configured to send data scheduling information to the terminal device, where the data scheduling information indicates a first time-frequency resource for data transmission; when the processing unit 1402 performs data transmission with the terminal device according to the transmission state of each time-frequency resource group in the N time-frequency resource groups, specifically, the processing unit 1402 is configured to perform data transmission with the terminal device according to the transmission state of each time-frequency resource group in the N time-frequency resource groups and the first time-frequency resource.

[0135] For a more detailed description of the above processing unit 1402 and transceiver unit 1403, reference can be directly made to Figure 2 the relevant descriptions in the method embodiments shown, which will not be elaborated here.

[0136] As Figure 15 shown, the communication device 1500 includes a processor 1510 and an interface circuit 1520. The processor 1510 and the interface circuit 1520 are coupled to each other. It can be understood that the interface circuit 1520 can be a transceiver or an input / output interface. Optionally, the communication device 1500 may further include a memory 1530, which is used to store instructions executed by the processor 1510, or input data required for the processor 1510 to run the instructions, or data generated after the processor 1510 runs the instructions.

[0137] When the communication device 1500 is used to implement Figure 2 the method shown, the processor 1510 is used to implement the functions of the above processing unit 1402, and the interface circuit 1520 is used to implement the functions of the above transceiver unit 1403.

[0138] When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and this information is sent by a network device to the terminal device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device, and this information is sent by the terminal device to the network device.

[0139] When the communication device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by a terminal device to the network device; or, the network device chip sends information to other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the network device to the terminal device.

[0140] It can be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), 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.

[0141] The method steps in the embodiments of the present application may be implemented in a hardware manner or by a processor executing software instructions. The software instructions may be composed of corresponding software modules, and the software modules may be stored in a random access memory (RAM), flash memory, read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), register, hard disk, removable 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. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in an ASIC. In addition, the ASIC may be located in a network device or a terminal device. Of course, the processor and the storage medium may also exist as discrete components in the network device or the terminal device.

[0142] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in the form of a computer program product in whole or in part. 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 executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable devices. The computer program or instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired or wireless manner. 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, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disc (DVD); or it may be a semiconductor medium, such as a solid state drive (SSD).

[0143] In various embodiments of the present application, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0144] In the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. In the written description of the present application, the character " / " generally represents an "or" relationship between the associated objects before and after; in the formulas of the present application, the character " / " represents a "division" relationship between the associated objects before and after. In addition, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, timing, priority, or importance of multiple objects, and the descriptions of "first" and "second" do not necessarily limit that the objects are different.

[0145] It should be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The magnitude of the serial numbers of the above processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: include: Determine N time-frequency resource groups, each of the N time-frequency resource groups includes at least one time-frequency resource, and N is a positive integer greater than or equal to 2; receiving transmission indication information from a network device, the transmission indication information including a bit sequence for indicating a transmission status of the N time-frequency resource groups, the N bit groups in the bit sequence corresponding one-to-one to the N time-frequency resource groups, and each of the N bit groups including at least one bit; performing data transmission with the network device according to a transmission status of each of the N time-frequency resource groups; When the i-th time-frequency resource group in the N time-frequency resource groups is separated by M first symbols in the time domain, M is a positive integer. The i-1th bit group in the bit sequence indicates the transmission status of the i-1th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, where i is a positive integer greater than or equal to 2 and less than or equal to N, or The i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the i+1-th time-frequency resource group, where i is a positive integer less than or equal to N-1.

2. The method according to claim 1, wherein When the number of symbols of the i-th time-frequency resource group before the M first symbols is less than the number of symbols of the i-th time-frequency resource group after the M first symbols, the i-1-th bit group in the bit sequence indicates the transmission status of the i-1-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, and i is a positive integer greater than or equal to 2 and less than or equal to N.

3. The method according to claim 1, wherein When the number of symbols of the i-th time-frequency resource group before the M first symbols is greater than or equal to the number of symbols of the i-th time-frequency resource after the M first symbols, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols and the i+1-th time-frequency resource group in the i-th time-frequency resource group, where i is a positive integer less than or equal to N-1.

4. The method according to any one of claims 1 to 3, wherein When the time domain position of the i-th time-frequency resource group is the time-frequency resource group with the earliest time domain position among the N time-frequency resource groups, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the i+1-th time-frequency resource group.

5. The method according to any one of claims 1 to 3, wherein When the time domain position of the i-th time-frequency resource group is the time-frequency resource group with the latest time domain position among the N time-frequency resource groups, the i-1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-1-th time-frequency resource group and the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group.

6. The method according to claim 1, wherein When the number of symbols of the i-th time-frequency resource group before the M first symbols is 1 symbol or 2 symbols, the i-1-th bit group in the bit sequence indicates the transmission status of the i-1-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, where i is a positive integer greater than or equal to 2 and less than or equal to N; or, When the number of symbols after the M first symbols in the i-th time-frequency resource group is 1 symbol or 2 symbols, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the i+1-th time-frequency resource group, where i is a positive integer less than or equal to N-1.

7. The method according to any one of claims 1 to 3, wherein The M is greater than or equal to a first threshold.

8. The method according to any one of claims 1 to 3, wherein When the transmission indication information is used to cancel uplink transmission, the M first symbols are downlink symbols.

9. The method according to any one of claims 1 to 3, wherein The method further comprises: receiving data scheduling information from a network device, the data scheduling information indicating a first time-frequency resource for data transmission; The performing data transmission with the network device according to the transmission status of each of the N time-frequency resource groups includes: Data is transmitted with the network device according to the transmission status of each of the N time-frequency resource groups and the first time-frequency resource.

10. A communication method, characterized in that: include: Determine N time-frequency resource groups, each of the N time-frequency resource groups includes at least one time-frequency resource, and N is a positive integer greater than or equal to 2; Sending transmission indication information to a terminal device, where the transmission indication information includes a bit sequence for indicating a transmission status of the N time-frequency resource groups, where the N bit groups in the bit sequence correspond one-to-one to the N time-frequency resource groups, and each of the N bit groups includes at least one bit; performing data transmission with the terminal device according to a transmission status of each of the N time-frequency resource groups; When the i-th time-frequency resource group in the N time-frequency resource groups is separated by M first symbols in the time domain, M is a positive integer. The i-1th bit group in the bit sequence indicates the transmission status of the i-1th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, where i is a positive integer greater than or equal to 2 and less than or equal to N, or The i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the i+1-th time-frequency resource group, where i is a positive integer less than or equal to N-1.

11. The method according to claim 10, wherein When the number of symbols of the i-th time-frequency resource group before the M first symbols is less than the number of symbols of the i-th time-frequency resource group after the M first symbols, the i-1-th bit group in the bit sequence indicates the transmission status of the i-1-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, and i is a positive integer greater than or equal to 2 and less than or equal to N.

12. The method according to claim 10, wherein When the number of symbols of the i-th time-frequency resource group before the M first symbols is greater than or equal to the number of symbols of the i-th time-frequency resource after the M first symbols, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols and the i+1-th time-frequency resource group in the i-th time-frequency resource group, where i is a positive integer less than or equal to N-1.

13. The method according to any one of claims 10 to 12, wherein: When the time domain position of the i-th time-frequency resource group is the time-frequency resource group with the earliest time domain position among the N time-frequency resource groups, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the i+1-th time-frequency resource group.

14. The method according to any one of claims 10 to 12, wherein: When the time domain position of the i-th time-frequency resource group is the time-frequency resource group with the latest time domain position among the N time-frequency resource groups, the i-1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-1-th time-frequency resource group and the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group.

15. The method according to claim 10, wherein When the number of symbols of the i-th time-frequency resource group before the M first symbols is 1 symbol or 2 symbols, the i-1-th bit group in the bit sequence indicates the transmission status of the i-1-th time-frequency resource group and the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group, where i is a positive integer greater than or equal to 2 and less than or equal to N; or, When the number of symbols after the M first symbols in the i-th time-frequency resource group is 1 symbol or 2 symbols, the i-th bit group in the bit sequence indicates the transmission status of the time-frequency resources before the M first symbols in the i-th time-frequency resource group, and the i+1-th bit group in the bit sequence indicates the transmission status of the time-frequency resources after the M first symbols in the i-th time-frequency resource group and the i+1-th time-frequency resource group, where i is a positive integer less than or equal to N-1.

16. The method according to any one of claims 10 to 12, wherein: The M is greater than or equal to a first threshold.

17. The method according to any one of claims 10 to 12, wherein: When the transmission indication information is used to cancel uplink transmission, the M first symbols are downlink symbols.

18. The method according to any one of claims 10 to 12, wherein: The method further comprises: Sending data scheduling information to the terminal device, where the data scheduling information indicates a first time-frequency resource for data transmission; The performing data transmission with the terminal device according to the transmission status of each of the N time-frequency resource groups includes: Data transmission is performed with the terminal device according to the transmission status of each time-frequency resource group in the N time-frequency resource groups and the first time-frequency resource.

19. A communication device, characterized in that: The apparatus comprises a unit for executing the method according to any one of claims 1 to 9, or comprises a unit for executing the method according to any one of claims 10 to 18.

20. A communication device, characterized in that: The method comprises 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 according to any one of claims 1 to 9 through a logic circuit or execute code instructions, or to enable the communication device to execute the method according to any one of claims 10 to 18.

21. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 9 or the method according to any one of claims 10 to 18 is implemented.

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