Transmission mode determination method and device

Abstract

The embodiment of the present application provides a transmission mode determination method and device, which are applied to the uRLLC scenario and can distinguish the frequency division multiplexing transmission mode in the uRLLC scenario. In this method, the terminal device receives resource indication information corresponding to multiple TCI states, and receives multiple data through these multiple TCI states. When the resource indication information meets the frequency division multiplexing condition, it can be determined that the transmission mode of the multiple data is the frequency division multiplexing transmission mode, and then the terminal device can process the received multiple data according to the frequency division multiplexing transmission mode. In the embodiment of the present application, whether the transmission mode is the frequency division multiplexing transmission mode is determined by the resource indication information, and no additional indication signaling is required, which can save indication signaling overhead.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and specifically to a method and device for determining a transmission mode. Background Art

[0002] With the development of communication technology, the fifth generation (5 th The 5G-generation communication system (also known as new radio (NR)) has emerged. The 5G system can support three major types of services: enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (uRLLC), and massive machine type communications (mMTC).

[0003] uRLLC requires high transmission reliability and low transmission latency. To meet the high reliability requirements of uRLLC, network devices can use multiple transmission and reception points (TRPs) to simultaneously transmit the same data to terminal devices. Network devices can use frequency division multiplexing (FDM) transmission mode to enable multiple TRPs to simultaneously transmit the same data to terminal devices.

[0004] In the uRLLC scenario, how terminal devices identify that network devices use frequency division multiplexing transmission mode is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The embodiments of the present application provide a method and apparatus for determining a transmission mode, by which a terminal device can identify a frequency division multiplexing transmission mode adopted by a network device, so that the terminal device can process received data according to the frequency division multiplexing transmission mode.

[0006] A first aspect of an embodiment of the present application provides a method for determining a transmission mode, including:

[0007] receiving resource indication information corresponding to N transmission configuration index (TCI) states, where N is an integer greater than or equal to 2;

[0008] Receive M data through N TCI states, where M is an integer greater than or equal to 2;

[0009] In the case that the resource indication information meets the frequency division multiplexing condition, the transmission mode of the M data is determined to be the frequency division multiplexing transmission mode, where M=N.

[0010] Among them, the frequency division multiplexing transmission mode is a frequency division multiplexing transmission mode based on multiple TCI states. In the frequency division multiplexing transmission mode based on multiple TCI states, the same data is transmitted simultaneously through multiple TCI states and the frequency domain resources corresponding to any two TCI states in the multiple TCI states are different.

[0011] The method provided in the first aspect of the embodiment of the present application can be executed by a terminal device or by a component of the terminal device (such as a processor, chip, or chip system). The terminal device can determine that the transmission mode adopted by the network device is a frequency division multiplexing transmission mode based on the resource indication information, provided that the frequency division multiplexing condition is met, and then the terminal device can process the received data according to the frequency division multiplexing transmission mode.

[0012] When one TRP corresponds to one TCI state, the terminal device receives resource indication information corresponding to N TRPs, receives M data from N TRPs, and when the resource indication information meets the frequency division multiplexing conditions, determines that M=N, and the transmission mode of the M data is the frequency division multiplexing transmission mode.

[0013] In one possible implementation, the resource indication information is used to indicate a frequency domain resource allocation type, and the frequency division multiplexing condition includes: the frequency domain resource allocation type is a frequency domain resource allocation type that allocates frequency domain resources for multiple TCI states. It is understood that when the frequency domain resource allocation type indicated by the resource indication information is a frequency domain resource allocation type that allocates frequency domain resources for multiple TCI states, it can be determined that the resource indication information satisfies the frequency division multiplexing condition. In this method, determining whether the transmission mode is a frequency division multiplexing transmission mode based on the frequency domain resource allocation type is simple and does not require additional indication signaling to indicate the frequency division multiplexing transmission mode, thereby saving indication signaling overhead.

[0014] In one possible implementation, the resource indication information is used to indicate the frequency domain resource allocation granularity, and the frequency division multiplexing condition includes: the frequency domain resource allocation granularity is multiple resource units, and the resource unit is a resource block (RB), a resource block group (RBG), or a precoding resource block group (PRG). It can be understood that when the frequency domain resource allocation granularity is multiple resource units, it can be determined that the resource indication information meets the frequency division multiplexing condition. In this method, whether the transmission mode is the frequency division multiplexing transmission mode is determined by whether the frequency domain resource allocation granularity is multiple resource units. This is simple and does not require additional indication signaling to indicate the frequency division multiplexing transmission mode, which can save indication signaling overhead.

[0015] In one possible implementation, the resource indication information is used to indicate the bits corresponding to N TCI states in a frequency-domain resource allocation bitmap; the frequency-division multiplexing condition includes: the bits corresponding to the i-th TCI state are continuous and adjacent to the bits corresponding to the (i+1)-th TCI state; or, the bits corresponding to the i-th TCI state are discontinuous and separated by N-1 bits; wherein the i-th TCI state is any TCI state among the N TCI states. In this method, whether the transmission mode is a frequency-division multiplexing transmission mode is determined based on the frequency-domain resource allocation bitmap, eliminating the need for additional indication signaling to indicate the frequency-division multiplexing transmission mode, thereby reducing indication signaling overhead.

[0016] In one possible implementation, the resource indication information is used to indicate the frequency domain resources corresponding to each of the N TCI states; the frequency division multiplexing conditions include: the frequency domain resources corresponding to the i-th TCI state and the frequency domain resources corresponding to the (i+1)-th TCI state belong to different RBs or different PRGs of the same RBG; or, the frequency domain resources corresponding to each TCI state are a continuous segment of frequency domain resources, and the frequency domain resources corresponding to any two TCI states in the N TCI states do not overlap; wherein the i-th TCI state is any TCI state in the N TCI states. In this method, whether the transmission mode is a frequency division multiplexing transmission mode is determined by the frequency domain resources corresponding to each TCI state, and no additional indication signaling is required to indicate the frequency division multiplexing transmission mode, thereby saving indication signaling overhead.

[0017] In one possible implementation, the resource indication information includes frequency domain resource interval indication information; the frequency division multiplexing condition includes: the interval between frequency domain resources corresponding to adjacent TCI states indicated by the frequency domain resource interval indication information is greater than or equal to 0, and the frequency domain resources corresponding to any one of the N TCI states are a continuous segment of frequency domain resources. In this approach, whether the transmission mode is frequency division multiplexing is determined based on the frequency domain resource interval indication information, eliminating the need for additional indication signaling to indicate the frequency division multiplexing transmission mode, thereby reducing indication signaling overhead.

[0018] Optionally, when the above-mentioned resource indication information includes frequency domain resource interval indication information (regardless of whether the indicated interval is greater than 0), and the frequency domain resources corresponding to any one of the N TCI states are a continuous frequency domain resource, it can be determined that the resource indication information satisfies the frequency domain resource interval indication information.

[0019] In a possible implementation, the resource indication information is carried in radio resource control (RRC) signaling, downlink control information (DCI) or media access control (MAC) control element (CE) signaling.

[0020] When the resource indication information is carried in RRC signaling, receiving the resource indication information may be performed before receiving the M data. When the resource indication information is carried in DCI, receiving the resource indication information and receiving the M data may be performed simultaneously.

[0021] In one possible implementation, when the terminal device determines that the transmission mode is the frequency division multiplexing transmission mode, it may further determine whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode, so that the terminal device processes the received data accordingly according to the corresponding frequency division multiplexing transmission mode. In the first frequency division multiplexing transmission mode, the M data transmitted through N TCI states correspond to the same codeword; in the second frequency division multiplexing transmission mode, the M data transmitted through N TCI states correspond to N different codewords.

[0022] In one possible implementation, the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode based on the acquired codeword indication information. Specifically, if the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is 1, then the frequency division multiplexing transmission mode can be determined to be the first frequency division multiplexing transmission mode; if the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, then the frequency division multiplexing transmission mode can be determined to be the second frequency division multiplexing transmission mode. The codeword indication information can be carried in RRC signaling, DCI, or MAC CE signaling.

[0023] Furthermore, if the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the number of valid codewords among the N different codewords is greater than 1, then the frequency division multiplexing transmission mode can be determined to be the second frequency division multiplexing transmission mode.

[0024] In one possible implementation, whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode is determined based on the reported capability indication information. Specifically, if the reported capability indication information indicates that the terminal device supports simultaneous reception of multiple codewords or multiple redundant versions of the same data, the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode; otherwise, the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode.

[0025] In one possible implementation, when it is determined that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode, the redundant version number of the same codeword corresponding to N TCI states is determined, and the M data are merged according to the redundant version number; when it is determined that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode, the redundant version number corresponding to each TCI state in the N TCI states is determined, and the M data are merged according to the redundant version number corresponding to each TCI state.

[0026] A second aspect of an embodiment of the present application provides a method for determining a transmission mode, including:

[0027] Receive M data through N TCI states, where M and N are integers greater than or equal to 2;

[0028] If the frequency domain resources corresponding to any two TCI states in the N TCI states are completely different, it is determined that the transmission mode of the M data is the frequency division multiplexing transmission mode.

[0029] Among them, the frequency division multiplexing transmission mode is a frequency division multiplexing transmission mode based on multiple TCI states. In the frequency division multiplexing transmission mode based on multiple TCI states, the same data is transmitted simultaneously through multiple TCI states and the frequency domain resources corresponding to any two TCI states in the multiple TCI states are different.

[0030] The method provided in the second aspect of the embodiments of the present application can be executed by a terminal device or by a component of the terminal device (e.g., a processor, a chip, or a chip system). When the terminal device determines that the frequency domain resources corresponding to any two TCI states are completely different, it can determine that the transmission mode adopted by the network device is a frequency division multiplexing transmission mode, and the terminal device can then process the received data according to the frequency division multiplexing transmission mode.

[0031] In one possible implementation, the network device may inform the terminal device through RRC signaling, DCI or MAC CE signaling that the frequency domain resources corresponding to any two TCI states among N TCI states are completely different.

[0032] In one possible implementation, a terminal device may determine the frequency domain resources corresponding to each of N TCI states. If the frequency domain resources corresponding to any two TCI states are different, the transmission mode is determined to be frequency division multiplexing. How the terminal device determines the frequency domain resources corresponding to each TCI state is not limited herein.

[0033] A third aspect of the embodiments of the present application provides a method for determining a transmission mode, including:

[0034] Receive M data through N TCI states, where M and N are integers greater than or equal to 2;

[0035] When it is determined that the transmission mode of the M data is the frequency division multiplexing transmission mode, determining that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode;

[0036] In the first frequency division multiplexing transmission mode, the M data transmitted through N TCI states correspond to the same codeword; in the second frequency division multiplexing transmission mode, the M data transmitted through N TCI states correspond to N different codewords.

[0037] The method provided in the third aspect of the embodiment of the present application can be executed by a terminal device or by a component of the terminal device (such as a processor, chip, or chip system). When the terminal device determines the frequency division multiplexing transmission mode, it further distinguishes whether it is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode, so that the terminal device processes the received data according to the determined frequency division multiplexing transmission mode. In the third aspect, how to determine the frequency division multiplexing transmission mode is not limited here. For example, it can be determined according to the first aspect or the second aspect, or it can be determined according to other methods.

[0038] In one possible implementation, the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode based on the acquired codeword indication information. Specifically, if the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is 1, then the frequency division multiplexing transmission mode can be determined to be the first frequency division multiplexing transmission mode; if the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, then the frequency division multiplexing transmission mode can be determined to be the second frequency division multiplexing transmission mode. The codeword indication information can be carried in RRC signaling, DCI, or MAC CE signaling.

[0039] Furthermore, if the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the number of valid codewords among the N different codewords is greater than 1, then the frequency division multiplexing transmission mode can be determined to be the second frequency division multiplexing transmission mode.

[0040] In one possible implementation, whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode is determined based on the reported capability indication information. Specifically, if the reported capability indication information indicates that the terminal device supports simultaneous reception of multiple codewords or multiple redundant versions of the same data, the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode; otherwise, the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode.

[0041] In one possible implementation, when it is determined that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode, the redundant version number of the same codeword corresponding to N TCI states is determined, and the M data are merged according to the redundant version number; when it is determined that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode, the redundant version number corresponding to each TCI state in the N TCI states is determined, and the M data are merged according to the redundant version number corresponding to each TCI state.

[0042] A fourth aspect of the embodiments of the present application provides a communication device, which may be a terminal device, or a device in a terminal device, or a device that can be used in conjunction with a terminal device. The communication device has the ability to implement some or all of the functions of the terminal device in any of the method examples described in the first to third aspects. For example, the functions of the terminal device may have the functions of some or all of the embodiments of the present application, or may have the functions of implementing any one of the embodiments of the present application alone. The function may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions.

[0043] In one possible design, the terminal device may include a processing unit and a transceiver unit. The processing unit is configured to support the terminal device in executing the corresponding functions of any of the methods provided in aspects 1 to 3 above. The transceiver unit is used to support communication between the terminal device and other devices, which may be network devices. The terminal device may also include a storage unit, coupled to the processing unit and the transceiver unit, which stores necessary program instructions and data for the terminal device.

[0044] In one embodiment, the terminal device includes a processing unit and a transceiver unit;

[0045] The transceiver unit is configured to receive resource indication information corresponding to N transmission configuration indication TCI states, where N is an integer greater than or equal to 2; and receive M data through the N TCI states, where M is an integer greater than or equal to 2;

[0046] The processing unit is configured to determine that the transmission mode of the M data is a frequency division multiplexing transmission mode when it is determined that the resource indication information meets the frequency division multiplexing condition.

[0047] As an example, the processing unit may be a processor, the transceiver unit may be a transceiver, and the storage unit may be a memory.

[0048] In one embodiment, the terminal device includes a processor and a transceiver;

[0049] The transceiver is configured to receive resource indication information corresponding to N transmission configuration indication TCI states, where N is an integer greater than or equal to 2; and receive M data through the N TCI states, where M is an integer greater than or equal to 2;

[0050] The processor is configured to determine that the transmission mode of the M data is a frequency division multiplexing transmission mode when it is determined that the resource indication information meets the frequency division multiplexing condition.

[0051] During specific implementation, the processor may be used to perform any of the methods provided in the first to third aspects above, such as, but not limited to, baseband-related processing, and the transceiver may be used to perform, such as, but not limited to, radio frequency transceiver. The above-mentioned devices may be provided on separate chips, or at least partially or entirely on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. The analog baseband processor may be integrated with the transceiver on the same chip, while the digital baseband processor may be provided on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor may be integrated with multiple application processors (such as, but not limited to, a graphics processor, a multimedia processor, etc.) on the same chip. Such a chip may be referred to as a system on chip. Whether each device is provided independently on different chips or integrated on one or more chips often depends on the specific requirements of the product design. The embodiments of the present application do not limit the specific implementation form of the above-mentioned devices.

[0052] A fifth aspect of the embodiments of the present application provides a processor for executing any of the methods provided in the first to third aspects above. In the process of executing any of the methods provided in the first to third aspects above, the process of sending the above-mentioned information or data and receiving the above-mentioned information or data can be understood as the process of the processor outputting the above-mentioned information or data, and the process of the processor receiving the above-mentioned information or data input. Specifically, when outputting the above-mentioned information or data, the processor outputs the above-mentioned information or data to the transceiver so that the transceiver transmits it. Furthermore, after the information or data is output by the processor, it may also undergo other processing before reaching the transceiver. Similarly, when the processor receives the above-mentioned information or data input, the transceiver receives the above-mentioned information or data and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information or data, the above-mentioned information or data may undergo other processing before being input into the processor.

[0053] Based on the above principles, for example, the receiving of resource indication information mentioned in any of the methods provided in the first to third aspects can be understood as the transceiver inputting the received resource indication information into the processor.

[0054] In this way, unless otherwise specified, or unless otherwise inconsistent with the actual function or internal logic in the relevant description, the operations such as transmission, sending and receiving involved in the processor can be more generally understood as processor output, reception, input and other operations, rather than the transmission, sending and receiving operations performed by the RF circuit and antenna.

[0055] In a specific implementation, the processor may be a processor specifically configured to execute the methods, or may be a processor that calls computer instructions stored in a memory to execute the methods, such as a general-purpose processor. The memory may be a non-transitory memory, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or disposed on separate chips. The embodiments of the present application do not limit the type of memory or the configuration of the memory and the processor.

[0056] A sixth aspect of the present application provides a chip system, which includes a processor and an interface. The chip system can be deployed in a terminal device.

[0057] In one possible design, the interface is used to receive resource indication information corresponding to N TCI states; M data is received through N TCI states; and the processor is used to determine that the transmission mode of the M data is a frequency division multiplexing transmission mode when the resource indication information meets the frequency division multiplexing conditions.

[0058] In one possible design, the chip system also includes a memory for storing program instructions and data necessary for the terminal device. The processor is configured to call and execute the program instructions stored in the memory to support the terminal device in implementing any of the functions described in aspects 1 to 3. For example, the processor calls the program instructions stored in the memory to receive resource indication information corresponding to N TCI states via an interface. For another example, the processor calls the program instructions stored in the memory to determine that the transmission mode for M data is frequency division multiplexing transmission mode. The chip system can be composed of a chip or can include a chip and other discrete components.

[0059] A seventh aspect of an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions used for the above-mentioned terminal device, which includes a program for executing any one of the methods described in the first to third aspects above.

[0060] An eighth aspect of the embodiments of the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute any one of the methods described in the first to third aspects above.

[0061] An eighth aspect of the embodiments of the present application provides a computer program comprising instructions, which, when executed on a computer, enables the computer to execute any one of the methods described in the first to third aspects above. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 A schematic diagram of a network architecture for applying an embodiment of the present application;

[0063] Figure 2a A schematic diagram of another network architecture to which the embodiments of the present application are applied;

[0064] Figure 2b A schematic diagram of another network architecture to which the embodiments of the present application are applied;

[0065] Figure 3 is an example diagram of a first frequency division multiplexing transmission mode;

[0066] Figure 4 This is an example diagram of the second frequency division multiplexing transmission mode;

[0067] Figure 5 A flow chart of a method for determining a transmission mode according to an embodiment of the present application;

[0068] Figure 6 The following are examples of two frequency domain resource allocation methods:

[0069] Figure 7 This is an example diagram of a frequency domain resource allocation granularity of 2 RBGs provided in an embodiment of the present application;

[0070] Figure 8 This is an example diagram of a bitmap provided in an embodiment of the present application;

[0071] Figure 9 This is an example diagram of another bitmap provided in an embodiment of the present application;

[0072] Figure 10 This is an example diagram of frequency domain resource allocation provided in an embodiment of the present application;

[0073] Figure 11 A flow chart of a method for determining a transmission mode provided in an embodiment of the present application;

[0074] Figure 12 A flowchart of another method for determining a transmission mode provided in an embodiment of the present application;

[0075] Figure 13 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0076] Figure 14 A schematic structural diagram of another communication device provided in an embodiment of the present application;

[0077] Figure 15 A schematic diagram of the structure of a chip provided in an embodiment of the present application;

[0078] Figure 16 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0079] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B. In the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. In addition, in order to facilitate the clear description of the technical solutions in the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between technical features with basically the same or similar functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0080] The embodiments of the present application can be applied to Long Term Evolution (LTE) systems, NR systems, and future communication systems, such as future networks or sixth-generation communication systems. The embodiments of the present application can be applied to device-to-device (D2D) systems, machine-to-machine (M2M) systems, and vehicle-to-everything (V2X) systems.

[0081] The communication methods in the V2X system are collectively referred to as V2X communication. V2X communication is aimed at high-speed equipment represented by vehicles, and is a basic technology and key technology for applications in scenarios with very high communication latency requirements in the future, such as smart cars, autonomous driving, intelligent transportation systems and other scenarios. For example, the V2X communication includes: communication between vehicles (vehicle to vehicle, V2V), communication between vehicles and roadside infrastructure (vehicle to infrastructure, V2I), communication between vehicles and pedestrians (vehicle to pedestrian, V2P) or communication between vehicles and networks (vehicle to network, V2N), etc. The communication between terminal devices involved in the V2X system is widely referred to as slidelink (SL) communication. That is to say, the terminal described in this application may also be a vehicle or a vehicle component used in a vehicle.

[0082] Figure 1 Schematic diagram of a V2X system provided in an embodiment of the present application. This diagram includes V2V communication, V2P communication, and V2I / N communication.

[0083] like Figure 1As shown, vehicles or vehicle components communicate with each other via V2V. A vehicle or vehicle component can broadcast information such as its speed, direction, location, and whether it has applied the emergency brake to surrounding vehicles. This information allows drivers of surrounding vehicles to better perceive traffic conditions beyond visual range, enabling them to anticipate dangerous situations and take evasive action. Vehicles or vehicle components communicate with roadside infrastructure via V2I. Roadside infrastructure provides various service information and access to data networks. Features such as non-stop toll collection and in-car entertainment significantly enhance intelligent transportation. Roadside infrastructure, such as roadside units (RSUs), includes two types: terminal-type RSUs. Because RSUs are located along the roadside, these terminal-type RSUs are immobile and therefore not considered mobile. Network-type RSUs provide timing synchronization and resource scheduling for vehicles or vehicle components communicating with them. Vehicles or vehicle components communicate with humans via V2P, while vehicles or vehicle components communicate with the network via V2N. Among them, the network architecture and business scenarios described in the embodiments disclosed in this application are intended to more clearly illustrate the technical solutions of the embodiments disclosed in this application, and do not constitute a limitation on the technical solutions provided by the embodiments disclosed in this application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments disclosed in this application are also applicable to similar technical problems.

[0084] See Figure 2a , is a schematic diagram of another network architecture applying an embodiment of the present application. Figure 2a The network architecture shown may include two terminal devices and one network device, which can transmit data or control signaling to multiple terminal devices. Figure 2b , is another network architecture diagram applying the embodiment of the present application. Figure 2b The network architecture shown may include one terminal device and three network devices, and multiple network devices may transmit data or control signaling to one terminal device. Figure 2a and Figure 2b The number and form of the devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of the present application.

[0085] Figure 2a and Figure 2bIn the present invention, a network device can be used to communicate with a terminal device via a wireless interface under the control of a network device controller (not shown). In some embodiments, the network device controller can be part of the core network or integrated into the network device. The network device can be used to transmit control information or user data to the core network via a backhaul interface. Network devices can also communicate with each other directly or indirectly via the backhaul interface.

[0086] In the embodiment of the present application, the network device can be any device with wireless transceiver functions. Including but not limited to: a base station in an LTE system or a base station in an NR system (next-generation Node basestation, gNodeB or gNB) or a transmission receiving point (transmission receiving point / transmission reception point, TRP) in an NR system, a base station of subsequent evolution of 3GPP, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support the network of the same technology mentioned above, or they can support the networks of different technologies mentioned above. The base station can include one or more co-sited or non-co-sited TRPs. In one implementation, the TRP can be a network device such as a base station, or it can be an antenna panel, panel, etc. of a base station. The network device can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The network device can also be a server, a wearable device, or an in-vehicle device, etc. The following description uses a base station as an example. The multiple network devices may be base stations of the same type or different types. A base station may communicate with a terminal device or communicate with the terminal device through a relay station.

[0087] A terminal device is a device with wireless transceiver capabilities that can be deployed on land, including indoors or outdoors, 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, and satellites, etc.). The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, etc. The embodiments of the present application do not limit the application scenarios. Terminal equipment may also be sometimes referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, UE agent, or UE device, etc. Terminal equipment may also be fixed or mobile.

[0088] To meet the high reliability requirements of uRLLC, network devices can use multiple Transmission Relays (TRPs) to transmit the same data to terminal devices. Multiple TRPs can transmit the same data to terminal devices in one or more dimensions, such as the time domain, frequency domain, and spatial domain. In the time domain, the transmission mode in which multiple TRPs transmit the same data to terminal devices is called a time-division multiplexing (TDM) transmission mode. In this TDM transmission mode, each TRP schedules the same frequency domain resources, but transmits data using different time domain resources. In the spatial domain, the transmission mode in which multiple TRPs transmit the same data to terminal devices is called a space-division multiplexing (SDM) transmission mode. In this SDM transmission mode, each TRP schedules the same time-frequency resources, but transmits data using different antenna ports. In the frequency domain, the transmission mode in which multiple TRPs simultaneously transmit the same data to terminal devices is called a frequency-division multiplexing (FDM) transmission mode. In this FDM transmission mode, each TRP schedules different frequency domain resources, meaning that any two TRPs schedule different frequency domain resources.

[0089] In uRLLC scenarios, how terminal devices identify whether network devices use frequency division multiplexing (FDM) transmission mode is a technical problem that needs to be solved urgently. Therefore, embodiments of the present application provide a method and apparatus for determining a transmission mode. In uRLLC scenarios, terminal devices can identify whether a network device uses FDM transmission mode, so that they can process received data according to the FDM transmission mode.

[0090] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0091] First, before describing the embodiments of the present application, the names or terms involved in the embodiments of the present application are introduced.

[0092] 1. Transmission Configuration Indication (TCI) state, namely TCI-state

[0093] TCI-state is configured by network devices to each terminal device. The structure of TCI-state is shown below.

[0094]

[0095]

[0096] It can be seen from the above structure that for each TCI-state, it includes a self-index tci-StateId and two quasi-colocation (QCL)-Info. For each QCL-Info, it includes a cell field and a bandwidth part (bwp)-Id, which indicates which bwp of which cell the TCI-state is applied to, that is, different bwp of different cells can be configured with different QCL-Info, or different bwp of the same cell can be configured with different QCL-Info. QCL-Info also includes a reference signal (referenceSignal), which indicates which reference signal resource the data transmission resource has a QCL relationship with, or is described as which reference signal resource the data transmission resource has a QCL relationship with. The QCL relationship refers to two reference signal resources (or antenna ports, where the antenna ports correspond to the reference signal resources one-to-one) having some of the same spatial parameters, or the data transmission resource and the reference signal resource having some of the same spatial parameters. Which specific spatial parameters are the same depends on the type of the QCL-Info, that is, another field qcl-Type of the QCL-Info. qcl-Type can have four values: {typeA, typeB, typeC, typeD}. For example, typeD indicates that two reference signal resources have the same spatial receive parameters, meaning that two beams have the same receive beam. One beam corresponds to one reference signal resource. Of the two QCL-Infos included in the TCI-state, at most one can have a qcl-Type of typeD.

[0097] Network equipment can configure multiple TCI-states to terminal devices through radio resource control (RRC) signaling. In data transmission scenarios, the configured TCI-states all include a QCL-Info of type D.

[0098] After configuring multiple TCI-states, a network device activates eight of them through medium access control (MAC) control element (CE) signaling. These eight TCI-states correspond one-to-one to the eight values of the TCI field in the downlink control information (DCI). The eight TCI-states corresponding to the eight values of the TCI field in the DCI are determined through MAC CE signaling.

[0099] The network device indicates a specific TCI-state through the TCI field in the DCI. For example, the value of the TCI field in the DCI sent by the network device to the terminal device is 000, indicating that the data transmission beam adopts the TCI-state corresponding to 000. In this TCI-state, the reference signal included in the QCL-Info of type D is the channel state information reference signal (CSI-RS) with an index of #1, indicating that the beam used for data transmission has the same receiving beam as the beam corresponding to the CSI-RS with an index of #1. The receiving beam corresponding to the CSI-RS with an index of #1 can be determined through the beam measurement process and is known to the terminal device. Therefore, through the specific value of the TCI field, the terminal device can determine the receiving beam corresponding to the data transmission beam, and thus adopt the corresponding receiving beam to receive data.

[0100] DCI can indicate the number of TCI-states. The terminal device can distinguish between single-station transmission scenarios and multi-station transmission scenarios based on the number of TCI-states. If the number of TCI-states indicated by the DCI is one, it can be determined to be a single-station transmission scenario; if the number of TCI-states indicated by the DCI is multiple, it can be determined to be a multi-station transmission scenario. When one TCI-state corresponds to one TRP, the single-station transmission scenario is a scenario in which data is transmitted through one TRP, and the multi-station transmission scenario is a scenario in which data is transmitted through multiple TRPs.

[0101] 2. Frequency Division Multiplexing Transmission Mode

[0102] The frequency division multiplexing transmission mode involved in the embodiments of the present application refers to the frequency division multiplexing transmission mode in a multi-station transmission scenario. In this frequency division multiplexing transmission mode, multiple TRPs simultaneously transmit the same data to the terminal device, and the frequency domain resources scheduled by any two TRPs in the multiple TRPs are different. Furthermore, the frequency division multiplexing transmission mode can be divided into a first frequency division multiplexing transmission mode and a second frequency division multiplexing transmission mode.

[0103] In the first frequency division multiplexing transmission mode, multiple TRPs use different frequency domain resources to send the same data to the terminal device at the same time. Multiple TRPs send the same codeword corresponding to the same transport block (TB), which corresponds to a redundant version (RV) of the TB.

[0104] For example, see Figure 3 , is an example diagram of the first frequency division multiplexing transmission mode. Figure 3In this example, TRP 1 and TRP 2 use different frequency domain resources and simultaneously send codeword 1 corresponding to the same TB to the terminal device. TRP 1 sends codeword 1 to the terminal device through TCI-state #1, and TRP 2 sends codeword 1 to the terminal device through TCI-state #2. The frequency domain resources corresponding to TCI-state #1 are different from the frequency domain resources corresponding to TCI-state #2. That is, TRP 1 and TRP 2 schedule different frequency domain resources.

[0105] In the second frequency division multiplexing transmission mode, multiple TRPs use different frequency domain resources to simultaneously send the same data to the terminal device. Multiple TRPs send different codewords corresponding to the same TB, with each codeword corresponding to a RV for that TB. The RVs of the codewords can be the same or different. Although the codewords are different, the data is the same.

[0106] For example, see Figure 4 , is an example diagram of the second frequency division multiplexing transmission mode. Figure 4 In this example, TRP 1 and TRP 2 use different frequency domain resources to simultaneously send the same data to the terminal device. TRP 1 sends codeword 1 corresponding to the same TB to the terminal device via TCI-state #1, and TRP 2 sends codeword 2 corresponding to the same TB to the terminal device via TCI-state #2. The frequency domain resources corresponding to TCI-state #1 and TCI-state #2 are different, meaning that TRP 1 and TRP 2 schedule different frequency domain resources. The RVs corresponding to codeword 1 and codeword 2 can be the same or different.

[0107] It can be understood that in the first frequency division multiplexing transmission mode, the same data transmitted simultaneously by multiple TRPs corresponds to the same codeword; in the second frequency division multiplexing transmission mode, the same data transmitted simultaneously by multiple TRPs corresponds to multiple different codewords.

[0108] Figure 3 and Figure 4 , based on the fact that one TCI-state corresponds to one TRP, two TRPs transmit data through one TCI-state respectively. In actual applications, two TCI-states can also correspond to the same TRP, that is, one TRP can transmit the same data to the terminal device through two TCI-states at the same time. Therefore, the frequency division multiplexing transmission mode, the first frequency division multiplexing transmission mode, and the second frequency division multiplexing transmission mode can be interpreted as:

[0109] The frequency division multiplexing transmission mode is a frequency division multiplexing transmission mode based on multiple TCI-states. In the frequency division multiplexing transmission mode based on multiple TCI-states, the same data is transmitted simultaneously through multiple TCI-states, and the frequency domain resources corresponding to any two TCI-states in the multiple TCI-states are different.

[0110] In the first frequency division multiplexing transmission mode, the same data is transmitted simultaneously through multiple TCI-states, and the frequency domain resources corresponding to any two TCI-states in the multiple TCI-states are different. The same data transmitted simultaneously through multiple TCI-states corresponds to the same codeword.

[0111] In the second frequency division multiplexing transmission mode, the same data is transmitted simultaneously through multiple TCI-states, and the frequency domain resources corresponding to any two TCI-states in the multiple TCI-states are different. The same data transmitted simultaneously through multiple TCI-states corresponds to different codewords. The RVs of the codewords can be the same or different.

[0112] The first frequency division multiplexing transmission mode can also be described as a frequency division multiplexing transmission mode based on a single codeword, frequency domain transmission mode one or scheme 2a, etc.; the second frequency division multiplexing transmission mode can also be described as a frequency division multiplexing transmission mode based on multiple codewords, frequency domain transmission mode two or scheme 2b, etc.

[0113] The three names of frequency division multiplexing transmission mode, first frequency division multiplexing transmission mode and second frequency division multiplexing transmission mode are used for examples and do not constitute a limitation on the embodiments of the present application. Other names can also be used to represent them. If the technical essence or principles describing these three transmission modes are the same or similar, they fall within the scope of protection of the embodiments of the present application.

[0114] 3. Resource block (RB), resource block group (RBG)

[0115] In the frequency domain, an RB can include 12 subcarriers. An RBG can be composed of multiple RBs. The specific number of RBs is related to the RRC configuration (configuration 1 and configuration 2) and the size of the bandwidth part (BWP). For details, see Table 1.

[0116] Table 1

[0117]

[0118] For example, assuming that the bandwidth of the BWP is 14 RBs and the RRC configuration is configuration 1, by looking up Table 1, it can be obtained that the RBG size is 2, that is, one RBG consists of two RBs.

[0119] based on Figure 1 、 Figure 2a or Figure 2b The network architecture shown in FIG2 is a block diagram of a transmission mode determination method provided by an embodiment of the present application. In the introduction, the names of the information or data exchanged between the terminal device and the network device are used as examples and do not constitute a limitation on the embodiments of the present application.

[0120] See Figure 5 , is a flow chart of a method for determining a transmission mode provided in an embodiment of the present application, which may include but is not limited to the following steps:

[0121] Step 501: The network device sends resource indication information corresponding to N TCI-states to the terminal device. Correspondingly, the terminal device receives resource indication information corresponding to the N TCI-states from the network device.

[0122] Here, N is an integer greater than or equal to 2, that is, the embodiment of the present application is applied to a multi-station transmission scenario or a scenario where a network device uses multiple TRPs for transmission.

[0123] The resource indication information may be carried in RRC signaling, DCI or MAC CE signaling.

[0124] Optionally, the network device may pre-configure resource indication information and send the resource indication information to the terminal device via RRC signaling, i.e., the resource indication information is carried in the RRC signaling. Optionally, the network device may configure resource indication information when sending data to the terminal device and send the resource indication information to the terminal device via RRC signaling. If the resource indication information is carried in the RRC signaling, step 501 may be performed before step 502.

[0125] When the resource indication information is carried in DCI, step 501 and step 502 can be performed simultaneously, that is, the network device sends the DCI carrying the resource indication information while sending data. When the resource indication information is carried in MAC CE signaling, step 501 can be performed before step 502.

[0126] There are several possible implementation methods for resource indication information:

[0127] In mode 1, resource indication information is used to indicate the frequency domain resource allocation type. This embodiment of the present application defines different frequency domain resource allocation modes as different frequency domain resource allocation types. That is, a frequency domain resource allocation type can also be described as a resource allocation mode. A frequency domain resource allocation mode may be type 0 (type 0), type 1 (type 1), or type 2.

[0128] In the Type 0 frequency domain resource allocation scheme, the frequency domain resource allocation results are indicated using a bitmap. The bitmap may include multiple bits, each of which represents a resource block group (RBG). The bit value indicates whether the RBG corresponding to that bit is used for data transmission. For example, if a bit is set to "1," it indicates that the corresponding RBG is used for data transmission; if it is set to "0," it indicates that the corresponding RBG is not used for data transmission. The Type 0 frequency domain resource allocation scheme supports both contiguous and non-contiguous allocation.

[0129] For example, see Figure 6 (A) in FIG. 1 is an example diagram of type 0 frequency domain resource allocation. Figure 6 In (A), a square represents an RB, an RBG consists of two RBs, the gray-shaded RB is used for data transmission, and the result of its frequency domain resource allocation can be represented by the bitmap "0101010" (in order from bottom to top).

[0130] In Type 1 frequency-domain resource allocation, the result of frequency-domain resource allocation is indicated using a resource indication value (RIV). In this resource allocation method, a continuous range of resource blocks (RBs) is allocated for transmission. The index (S) of the starting RB and the number of RBs (L) in this range form a RIV. A pair (S, L) corresponds to a RIV; knowing (S, L) can determine the RIV, or vice versa.

[0131] For example, assuming that (S=2, L=7) is obtained according to RIV, the corresponding starting RB index is "2" (numbering starts from "0"), and then occupies 7 consecutive RBs, which can be seen in Figure 6 (B) in FIG. 1 is an example diagram of type 1 frequency domain resource allocation method.

[0132] Type 0 frequency domain resource allocation method and type 1 frequency domain resource allocation method refer to allocation methods in virtual resource blocks (VRBs).

[0133] Frequency domain resource allocation type 2 is a new frequency domain resource allocation type that is different from frequency domain resource allocation type 0 and frequency domain resource allocation type 1. This frequency domain resource allocation type is a frequency domain resource allocation type that allocates frequency domain resources to multiple TCI-states or multiple TRPs. The name of frequency domain resource allocation type 2 is used for example and does not constitute a limitation on the embodiments of the present application. It can also be described as frequency domain resource allocation type C or FDM resource allocation type, etc. The specific method used in frequency domain resource allocation type 2 to indicate the results of frequency domain resource allocation is not limited in the embodiments of the present application.

[0134] In the second mode, the resource indication information is used to indicate the frequency domain resource allocation granularity, which is the frequency domain resource allocation unit. A frequency domain resource allocation unit can be composed of one or more resource units (specifically, frequency domain resource units). A resource unit can be an RB, RBG, or precoding resource block group (PRB).

[0135] Exemplarily, the result of frequency domain resource allocation is indicated using a bitmap, where each bit in the bitmap corresponds to a frequency domain resource allocation unit. For example, a bit set to "1" indicates that the frequency domain resource allocation unit is used for data transmission, while a bit set to "0" indicates that the frequency domain resource allocation unit is not used for data transmission. Assume that the frequency domain resource allocation unit is two RBGs, that is, one frequency domain resource allocation unit consists of two RBGs, and two RBGs correspond to one bit in the bitmap.

[0136] Mode three: resource indication information is used to indicate the bits corresponding to N TCI-states or the bits corresponding to N TRPs in a frequency domain resource allocation bitmap.

[0137] Method 4: The resource indication information is used to indicate the frequency domain resources corresponding to each TCI-state in N TCI-states, or the frequency domain resources scheduled by each TRP in N TRPs.

[0138] Mode 5: The resource indication information includes frequency domain resource interval indication information, which is used to indicate the interval between frequency domain resources corresponding to adjacent TCI-states.

[0139] Mode six, the resource indication information is used to indicate the frequency domain resource allocation field. All PRBs allocated to the terminal device are determined by the frequency domain resource allocation field in the downlink control information. These PRBs are divided into PRGs. Each PRG includes several consecutive PRBs, and the size of the PRG can be one of three values {2, 4, full band}. Full band means that all PRBs in the entire bandwidth are one PRG. When the size of the PRG is 2 or 4, all PRBs determined by the frequency domain resource allocation field are divided into PRGs, and PRGs with even indexes (ie, PRG 0, 2, 4...) are allocated to the first TCI-state, and PRGs with odd indexes (ie, PRG 1, 3, 5...) are allocated to the second TCI-state. When the size of the PRG is full band, all PRBs determined by the frequency domain resource allocation field are divided into two halves, and the first half PRBs (the first half) PRBs, N is the number of PRBs) are allocated to the first TCI-state, and the second half (the remaining PRBs) are allocated to the second TCI-state.

[0140] In step 502, the network device sends M data to the terminal device via N TCI-states. Correspondingly, the terminal device receives M data from the network device via N TCI-states, where M is an integer greater than or equal to 2.

[0141] When a network device uses frequency division multiplexing transmission mode to send M data to a terminal device, it uses N TCI-states to send the same data to the terminal device at the same time, with one TCI-state corresponding to one data, or uses N TRPs to send the same data to the terminal device at the same time, with one TRP corresponding to one data. In this transmission mode, M=N, and the frequency domain resources corresponding to each TCI-state are completely different or the frequency domain resources scheduled by each TRP are completely different. When a network device sends N data to a terminal device simultaneously through N TCI-states, the terminal device can receive N data from the network device simultaneously through N TCI-states. If the network device uses a transmission mode other than frequency division multiplexing transmission mode to send M data to a terminal device, then M may be greater than N, or may be equal to N.

[0142] The terminal device receives M data from the network device, indicating that M data has been received, but the transmission mode of the M data is not clear. Therefore, the terminal device identifies the transmission mode of the M data to process the M data, and the processing may include demodulation and decoding.

[0143] Step 503: When the resource indication information satisfies the frequency division multiplexing condition, the terminal device determines that the transmission mode of the M data is the frequency division multiplexing transmission mode.

[0144] The terminal device determines whether the transmission mode of M data is frequency division multiplexing transmission mode by whether the resource indication information meets the frequency domain multiplexing condition. If the frequency domain multiplexing condition is met, the frequency domain multiplexing transmission mode is adopted. There are several possible implementation methods for the resource indication information and the frequency division multiplexing condition:

[0145] In method 1, the resource indication information is used to indicate the frequency domain resource allocation type, and the frequency division multiplexing condition includes: the frequency domain resource allocation type is a frequency domain resource allocation type that allocates frequency domain resources for multiple TCI-states. In other words, when the frequency domain resource allocation type indicated by the resource indication information is type 2, the resource indication information satisfies the frequency division multiplexing condition, and thus determines that the transmission mode is a frequency division multiplexing transmission mode. When the frequency domain resource allocation type indicated by the resource indication information is type 0 or type 1, the resource indication information does not satisfy the frequency division multiplexing condition, the transmission mode of the M data is not a frequency division multiplexing transmission mode, and the transmission mode is not a frequency division multiplexing transmission mode.

[0146] In mode 2, the resource indication information indicates the frequency domain resource allocation granularity, and the frequency division multiplexing condition includes: the frequency domain resource allocation granularity is multiple resource units. In other words, when the frequency domain resource allocation granularity indicated by the resource indication information is multiple resource units, the resource indication information satisfies the frequency division multiplexing condition, and the transmission mode is determined to be frequency division multiplexing transmission mode. The frequency domain resource allocation granularity is the frequency domain resource allocation unit.

[0147] Exemplarily, the result of frequency domain resource allocation is indicated using a bitmap, where each bit in the bitmap corresponds to a frequency domain resource allocation unit. For example, a bit set to "1" indicates that the frequency domain resource allocation unit is used for data transmission, and a bit set to "0" indicates that the frequency domain resource allocation unit is not used for data transmission. Assuming that the frequency domain resource allocation unit is 2 RBGs, that is, the frequency domain resource allocation granularity is 2 RBGs, that is, one frequency domain resource allocation unit consists of 2 RBGs, then the frequency domain resource indication information meets the frequency division multiplexing condition, and the transmission mode is determined to be a frequency division multiplexing transmission mode.

[0148] See Figure 7 , which is an example diagram of a frequency domain resource allocation granularity of 2 RBGs provided in an embodiment of the present application. Figure 7 Assume that the same data is transmitted simultaneously through two TCI-states. The bitmap of TCI-state#1 can be represented as {1,1,0}, and the bitmap of TCI-state#2 can be represented as {1,0,0}. Figure 7 In the figure, one square represents one RBG, the gray-shaded RBG is used for data transmission, and one bit in the bitmap corresponds to two RBGs.

[0149] Mode 3: The resource indication information is used to indicate the bits corresponding to N TCI-states in a frequency domain resource allocation bitmap. The frequency division multiplexing conditions include the following ① or ②:

[0150] ① The bits corresponding to the i-th TCI-state are continuous and the bits corresponding to the i-th TCI-state are adjacent to the bits corresponding to the i+1-th TCI-state;

[0151] ② The bits corresponding to the i-th TCI-state are discontinuous and separated by N-1 bits;

[0152] The i-th TCI-state is any TCI-state among the N TCI-states.

[0153] For ①, it can be understood that among the bits corresponding to the N TCI states indicated by the resource indication information, the bits corresponding to the i-th TCI state are continuous and the bits corresponding to the i-th TCI state are adjacent to the bits corresponding to the i+1-th TCI state, then the resource indication information meets the frequency division multiplexing conditions, and then determines that the transmission mode is the frequency division multiplexing transmission mode.

[0154] For example, assuming that the same data is transmitted simultaneously through two TCI-states, the result of the frequency domain resource allocation is indicated by a bitmap, each bit in the bitmap corresponds to an RBG, and the bitmaps corresponding to these two TCI-states are {1,1,0,1,0,0}. The resource indication information is used to indicate that the first half of the bits in the bitmap (corresponding to {1,1,0}) are the bits corresponding to TCI-state#1, and the second half of the bits (corresponding to {1,0,0}) are the bits corresponding to TCI-state#2, then the resource indication information meets the frequency division multiplexing condition. Alternatively, the first half of the bits are the frequency domain resource allocation result of TRP 1, and the second half of the bits are the frequency domain resource allocation result of TRP 2, then the resource indication information meets the frequency division multiplexing condition.

[0155] See Figure 8 The figure shows an example diagram of a bit map provided in an embodiment of the present application. Figure 8 In the example, the bits corresponding to TCI-state#1 are continuous, the bits corresponding to TCI-state#2 are continuous, and the bits corresponding to TCI-state#1 are adjacent to the bits corresponding to TCI-state#2.

[0156] For ②, it can be understood that among the bits corresponding to the N TCI states indicated by the resource indication information, the bits corresponding to the i-th TCI-state are discontinuous and separated by N-1 bits. Then the resource indication information meets the frequency division multiplexing conditions, and the transmission mode is determined to be the frequency division multiplexing transmission mode.

[0157] For example, assuming that the same data is transmitted simultaneously through two TCI-states, the result of the frequency domain resource allocation is indicated using a bitmap, where each bit in the bitmap corresponds to an RBG. The bitmaps corresponding to these two TCI-states are {1,1,1,1,0,0}. The resource indication information is used to indicate that the even-numbered bits (corresponding to {1,1,0}) in the bitmap correspond to TCI-state #1, and the odd-numbered bits (corresponding to {1,0,0}) correspond to TCI-state #2. In this case, the resource indication information satisfies the frequency division multiplexing condition. Alternatively, if the even-numbered bits are the frequency domain resource allocation result for TRP 1 and the odd-numbered bits are the frequency domain resource allocation result for TRP 2, then the resource indication information satisfies the frequency division multiplexing condition. The even and odd bits are sorted in order from highest to lowest, with the highest bit of the bitmap set to 0. The order corresponding to the bitmap {1,1,1,1,0,0} is {0,1,2,3,4,5}. It can be seen that the bits corresponding to TCI-state#1 are discontinuous and are separated by 1 bit. Furthermore, when the same data is transmitted simultaneously through three TCI-states, the bits corresponding to each TCI-state#1 are discontinuous and are separated by 2 bits.

[0158] See Figure 9 , which is an example diagram of another bit map provided in an embodiment of the present application. Figure 9 In the example, the bits corresponding to TCI-state#1 are discontinuous and separated by one bit, and the bits corresponding to TCI-state#2 are discontinuous and separated by one bit.

[0159] Mode 4: The resource indication information is used to indicate the frequency domain resources corresponding to each TCI-state in N TCI-states. The frequency division multiplexing conditions include the following ③ or ④:

[0160] ④ The frequency domain resources corresponding to the i-th TCI-state and the frequency domain resources corresponding to the i+1-th TCI-state belong to different RBs or different PRGs of the same RBG;

[0161] ④ The frequency domain resources corresponding to each TCI-state are all continuous frequency domain resources, and the frequency domain resources corresponding to any two TCI-states in N TCI-states do not overlap;

[0162] The i-th TCI-state is any TCI-state among the N TCI-states.

[0163] For ③, it can be understood that among the frequency domain resources corresponding to the N TCI-states indicated by the resource indication information, the frequency domain resources corresponding to the i-th TCI-state and the frequency domain resources corresponding to the i+1-th TCI-state belong to different RBs or different PRGs of the same RBG, then the resource indication information meets the frequency division multiplexing conditions, and then determines that the transmission mode is the frequency division multiplexing transmission mode.

[0164] For example, assuming that the same data is transmitted simultaneously through two TCI-states, the result of the frequency domain resource allocation is indicated by a bitmap, each bit in the bitmap corresponds to an RBG, and each RBG corresponds to multiple RBs or multiple RBGs. A bit in the bitmap corresponding to the two TCI-states is set to "1", indicating that the first half of the RBs or PRGs in the RBG corresponding to the bit are used for data transmission based on TCI-state#1, and the second half of the RBs or RBGs are used for data transmission based on TCI-state#1. Then, if the bitmap indicated by the resource indication information includes a bit set to "1", it can be determined that the resource indication information meets the frequency division multiplexing condition. Alternatively, the first half of the bits are the frequency domain resource allocation result of TRP 1, and the second half of the bits are the frequency domain resource allocation result of TRP 2, then the resource indication information meets the frequency division multiplexing condition.

[0165] For ④, it can be understood that among the frequency domain resources corresponding to the N TCI-states indicated by the resource indication information, the frequency domain resources corresponding to each TCI-state are a continuous frequency domain resource, and the frequency domain resources corresponding to any two TCI-states in the N TCI-states do not overlap, then the resource indication information meets the frequency division multiplexing conditions, and then determines that the transmission mode is the frequency division multiplexing transmission mode.

[0166] For example, assuming that the same data is transmitted simultaneously through two TCI-states, the frequency domain resources corresponding to TCI-state#1 indicated by the resource indication information are RB{#2,#3,#4,#5}, and the frequency domain resources corresponding to TCI-state are RB{#7,#8,#9,#10}, then the resource indication information meets the frequency division multiplexing condition, and the transmission mode is determined to be the frequency division multiplexing transmission mode. Figure 10 As shown, it is an example diagram of frequency domain resource allocation provided in an embodiment of the present application, which corresponds to the example.

[0167] In mode 5, the resource indication information includes frequency domain resource interval indication information, and the frequency division multiplexing condition includes: the interval between frequency domain resources corresponding to adjacent TCI-states indicated by the frequency domain resource interval indication information is greater than or equal to 0, and the frequency domain resources corresponding to any one of the N TCI-states are a continuous frequency domain resource. In other words, when the frequency domain resource interval indication information included in the resource indication information is greater than or equal to 0, and the frequency domain resources corresponding to any one of the TCI-states are continuous, it can be determined that the resource indication information satisfies the frequency division multiplexing condition, and the transmission mode is further determined to be the frequency division multiplexing transmission mode.

[0168] For example, see Figure 10 , the frequency domain resource interval indication information may be 1. When the resource indication information includes the frequency domain resource interval indication information, it may be determined that the resource indication information meets the frequency division multiplexing condition.

[0169] Optionally, the resource indication information includes frequency domain resource interval indication information, and the frequency domain resources corresponding to each TCI-state can be assumed to be a continuous frequency domain resource. Then, when the frequency domain resource interval indication information is greater than or equal to 0, it can be determined that the resource indication information meets the frequency division multiplexing conditions.

[0170] Optionally, when the resource indication information includes frequency domain resource interval indication information, regardless of the specific value indicated by the frequency domain resource interval indication information, it can be determined that the resource indication information meets the frequency division multiplexing condition. In other words, the resource indication information includes the frequency domain resource interval indication information, and it is determined that the resource indication information meets the frequency division multiplexing condition.

[0171] Mode 6: The resource indication information is used to indicate the frequency domain resource allocation field. When the resource indication information is received, it can be determined that the resource indication information meets the frequency division multiplexing condition, and then the transmission mode is determined to be the frequency division multiplexing transmission mode.

[0172] Exemplarily, the terminal device determines all PRBs allocated to the terminal device by the network device based on the frequency domain resource allocation field in the DCI, and divides these PRBs into PRGs. The size of the PRG can be three values {2, 4, full band}. When the size of the PRG is 2 or 4, the terminal device divides all PRBs determined according to the frequency domain resource allocation field into PRGs, and determines that the PRG with an even index is the PRG corresponding to the first TCI-state, and the PRG with an odd index is the PRG corresponding to the second TCI-state. When the size of the PRG is full band, the terminal device divides all PRBs determined according to the frequency domain resource allocation field into two parts, one part is the first half of the PRBs, corresponding to the first TCI-state; the other part is the second half of the PRBs, corresponding to the second TCI-state.

[0173] exist Figure 5 In the illustrated embodiment, the terminal device determines whether the network device uses frequency division multiplexing transmission mode based on whether the resource indication information satisfies frequency division multiplexing conditions. No additional indication signaling is required to indicate the frequency division multiplexing transmission mode, thus reducing indication signaling overhead. If frequency division multiplexing transmission mode is determined to be used, the terminal device can process the M received data according to the frequency division multiplexing transmission mode.

[0174] See Figure 11 , is a flow chart of a method for determining a transmission mode provided in an embodiment of the present application, which may include but is not limited to the following steps:

[0175] In step 601, a network device sends M data to a terminal device via N TCI-states. Correspondingly, the terminal device receives M data from the network device via N TCI-states, where M and N are integers greater than or equal to 2.

[0176] The implementation process of step 601 can be found in Figure 5 Detailed description of step 502 in the illustrated embodiment.

[0177] Step 602: If the frequency domain resources corresponding to any two TCI-states in the N TCI-states are completely different, determine that the transmission mode of the M data is the frequency division multiplexing transmission mode.

[0178] In one possible implementation, when M=N, the terminal device may determine the frequency domain resources corresponding to each of the N TCI-states based on the frequency domain resource locations of the N received data. Furthermore, the terminal device may determine whether the frequency domain resources corresponding to any two TCI-states are completely different. If so, the transmission mode of the N data is determined to be frequency division multiplexing.

[0179] In a possible implementation, when the terminal device determines that the frequency domain resources corresponding to any two TCI-states in the N TCI-states are completely different based on the resource indication information, the transmission mode of the N data is determined to be the frequency division multiplexing transmission mode. Figure 5 Resource indication information in the illustrated embodiment.

[0180] In one possible implementation, the network device reuses a certain bit of existing information (such as DCI, RRC signaling or MAC CE signaling, etc.). For example, the bit position "1" indicates that the frequency domain resources corresponding to any two TCI-states are completely different, thereby determining that the transmission mode is a frequency division multiplexing transmission mode.

[0181] The above three methods are provided for illustrative purposes only and do not constitute limitations on the embodiments of the present application. It is understood that the embodiments of the present application do not limit how the terminal device determines that the frequency domain resources corresponding to any two TCI-states among N TCI-states are completely different. Once the difference is determined, it can be determined that the transmission mode is a frequency division multiplexing transmission mode.

[0182] exist Figure 11 In the embodiment shown, when the terminal device determines that the frequency domain resources corresponding to any two TCI-states of N TCI-states are completely different, it determines that the transmission mode is a frequency division multiplexing transmission mode, so that the terminal device processes the received data according to the frequency division multiplexing transmission mode.

[0183] See Figure 12 , is a flow chart of another method for determining a transmission mode provided in an embodiment of the present application, which may include but is not limited to the following steps:

[0184] In step 701, a network device sends M data to a terminal device via N TCI-states. Correspondingly, the terminal device receives M data from the network device via N TCI-states, where M and N are integers greater than or equal to 2.

[0185] The implementation process of step 701 can be found in Figure 5 Detailed description of step 502 in the illustrated embodiment.

[0186] Step 702: When the terminal device determines that the transmission mode of the M data is the frequency division multiplexing transmission mode, the terminal device determines whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode.

[0187] Step 702 can be executed after step 503 or after step 602, that is, there is no limitation on how to determine whether the transmission mode is the frequency division multiplexing transmission mode. When it is determined to be the frequency division multiplexing transmission mode, it is determined whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode.

[0188] In a possible implementation, the terminal device may determine whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode according to the acquired codeword indication information. The codeword indication information may be carried in DCI, RRC signaling or MAC CE signaling. Figure 5 The resource indication information is carried in the DCI, and the codeword indication information is also carried in the DCI. Then, the resource indication information and the codeword indication information can be carried in the same DCI or in different DCIs.

[0189] The codeword indication information is used to indicate the number of codewords that can be scheduled for a single DCI, specifically the maximum number of codewords that can be scheduled for a single DCI. If the maximum number of codewords that can be scheduled for a single DCI indicated by the codeword indication information is 1, then the frequency division multiplexing transmission mode can be determined to be the first frequency division multiplexing transmission mode; if the maximum number of codewords that can be scheduled for a single DCI indicated by the codeword indication information is greater than 1, such as 2 or 3, then the frequency division multiplexing transmission mode can be determined to be the second frequency division multiplexing transmission mode.

[0190] Furthermore, if the maximum number of codewords that can be scheduled in a single DCI indicated by the codeword indication information is greater than 1, and the number of valid codewords among the N different codewords is greater than 1, then the terminal device can determine that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode. The terminal device can determine whether each codeword is valid based on the groups of transmission parameter fields included in the DCI, and each group of transmission parameter fields corresponds to one codeword. The transmission parameter field can be a modulation and coding scheme (MCS) field, an RV field, etc., that is, the transmission parameter can be an MCS, RV, etc. For a codeword, if the transmission parameter field corresponding to the codeword includes a parameter configured as a special value, then the terminal device can determine that the codeword is an invalid codeword, that is, the terminal device believes that the network device did not send the codeword. The special value can be a special value for a certain parameter, for example, the value of the MCS field is 26, which is a special value of MCS; it can also be multiple parameters with special values, for example, the value of the MCS field is 26 and the index of the RV is 1. The index of the RV can be described as the RV number.

[0191] For example, the maximum number of codewords that can be scheduled for a single DCI indicated by the codeword indication information is 2, but there is one valid codeword and the other is an invalid codeword among these 2 codewords, then the terminal device can determine that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode.

[0192] In one possible implementation, the terminal device may determine whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode based on the reported capability information. The capability information is used to indicate whether the terminal device supports simultaneous reception of multiple codewords or multiple RVs of the same data. The terminal device may report the capability information to the network device before the network device sends M data through N TCI-states, for example, reporting the capability information to the network device during a random access process.

[0193] It is understood that if the capability information indicates that the terminal device supports simultaneous reception of multiple codewords or multiple RVs of the same data, the network device may use the second frequency division multiplexing transmission mode to send data to the terminal device. If the capability information indicates that the terminal device does not support simultaneous reception of multiple codewords or multiple RVs of the same data, the network device may use the first frequency division multiplexing transmission mode or other transmission modes to send data to the terminal device.

[0194] When the terminal device determines the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode, the received N data can be combined and processed according to the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode.

[0195] If it is the first frequency division multiplexing transmission mode, N TCI-states correspond to the same codeword. The terminal device can determine the RV number of the codeword and combine and decode the N received data according to the RV number.

[0196] If it is the second frequency division multiplexing transmission mode, N TCI-states correspond to N different codewords. The terminal device can determine the RV number corresponding to each TCI-state and combine and decode the N received data according to the RV number corresponding to each TCI-state.

[0197] Among them, the correspondence between the TCI-state index and the codeword index can be a one-to-one correspondence in the order of index from small to large. For example, in two TCI-states, the TCI-state with a smaller TCI-state index corresponds to the codeword with a smaller codeword index. Alternatively, the TCI-states correspond to the codeword indexes in the order of index from small to large in the order indicated. For example, two TCI-states {#3, #2} are indicated in the DCI, TCI-state#3 is before TCI-state#2, TCI-state#3 corresponds to the codeword with a smaller codeword index, and TCI-state#2 corresponds to the codeword with a larger codeword index. The correspondence between the TCI-state index and the RV number can also refer to the correspondence between the TCI-state index and the codeword index.

[0198] Corresponding to the method provided in the above method embodiment, the embodiment of the present application further provides a corresponding communication device, which includes a module for executing the corresponding module of the above embodiment. The module can be software, hardware, or a combination of software and hardware.

[0199] See Figure 13 , is a structural diagram of a communication device provided in an embodiment of the present application. Figure 13The communication device 800 shown may include a transceiver unit 801 and a processing unit 802. The transceiver unit 801 may include a transmitting unit and a receiving unit. The transmitting unit is used to implement a transmitting function, and the receiving unit is used to implement a receiving function. The transceiver unit 801 may implement the transmitting function and / or the receiving function. The transceiver unit may also be described as a communication unit.

[0200] The communication device 800 may be a terminal device, a device in a terminal device, or a device that can be used in conjunction with the terminal device.

[0201] In one design, the transceiver unit 801 is configured to receive resource indication information corresponding to N transmission configuration indication (TCI) states, where N is an integer greater than or equal to 2; and receive M data via the N TCI states, where M is an integer greater than or equal to 2.

[0202] The processing unit 802 is configured to determine that the transmission mode of the M data is the frequency division multiplexing transmission mode when it is determined that the resource indication information meets the frequency division multiplexing condition.

[0203] Optionally, the frequency division multiplexing transmission mode is a frequency division multiplexing transmission mode based on multiple TCI states. In the frequency division multiplexing transmission mode based on multiple TCI states, the same data is transmitted simultaneously through multiple TCI states and the frequency domain resources corresponding to any two TCI states in the multiple TCI states are different.

[0204] Optionally, the resource indication information is used to indicate the frequency domain resource allocation type; the frequency division multiplexing condition includes: the frequency domain resource allocation type is a frequency domain resource allocation type that allocates frequency domain resources for multiple TCI states.

[0205] Optionally, the resource indication information is used to indicate the frequency domain resource allocation granularity; the frequency division multiplexing condition includes: the frequency domain resource allocation granularity is multiple resource units, and the resource unit is a resource block RB, a resource block group RBG or a precoding resource block group PRG.

[0206] Optionally, the resource indication information is used to indicate bits corresponding to N TCI states in a frequency domain resource allocation bitmap; the frequency division multiplexing condition includes: the bits corresponding to the i-th TCI state are continuous and the bit corresponding to the i-th TCI state is adjacent to the bit corresponding to the (i+1)-th TCI state; or, the bits corresponding to the i-th TCI state are discontinuous and separated by N-1 bits.

[0207] The i-th TCI state is any TCI state among the N TCI states.

[0208] Optionally, the resource indication information is used to indicate the frequency domain resources corresponding to each TCI state in N TCI states; the frequency division multiplexing condition includes:

[0209] The frequency domain resources corresponding to the i-th TCI state and the frequency domain resources corresponding to the (i+1)-th TCI state belong to different RBs or different PRGs of the same RBG;

[0210] Alternatively, the frequency domain resources corresponding to each TCI state are a continuous frequency domain resource, and the frequency domain resources corresponding to any two TCI states in the N TCI states do not overlap;

[0211] The i-th TCI state is any TCI state among the N TCI states.

[0212] Optionally, the resource indication information includes frequency domain resource interval indication information; the frequency division multiplexing conditions include: the interval between the frequency domain resources corresponding to adjacent TCI states indicated by the frequency domain resource interval indication information is greater than or equal to 0, and the frequency domain resources corresponding to any one of the N TCI states are a continuous frequency domain resource.

[0213] Optionally, the resource indication information is carried in radio resource control RRC signaling, downlink control information DCI or media access control MAC control element CE signaling.

[0214] Optionally, the processing unit 802 is also used to determine whether the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode; in the first frequency division multiplexing transmission mode, the M data transmitted through N TCI states correspond to the same codeword; in the second frequency division multiplexing transmission mode, the M data transmitted through N TCI states correspond to N different codewords.

[0215] Optionally, the processing unit 802 is specifically used to obtain codeword indication information; if the number of codewords that can be scheduled for a single DCI indicated by the codeword indication information is 1, the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode; if the number of codewords that can be scheduled for a single DCI indicated by the codeword indication information is greater than 1, the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode.

[0216] Optionally, the processing unit 802 is specifically used to determine that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode when the number of codewords that can be scheduled for a single DCI indicated by the codeword indication information is greater than 1 and the number of valid codewords among N different codewords is greater than 1.

[0217] Optionally, the processing unit 802 is specifically used to determine the frequency division multiplexing transmission mode as the second frequency division multiplexing transmission mode when the reported capability indication information indicates that the terminal device supports simultaneous reception of multiple codewords or multiple redundant versions of the same data; otherwise, determine the frequency division multiplexing transmission mode as the first frequency division multiplexing transmission mode.

[0218] Optionally, the processing unit 802 is also used to, when the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode, determine the redundant version number of the same codeword corresponding to N TCI states, and merge and process the M data according to the redundant version number; when the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode, determine the redundant version number corresponding to each TCI state in the N TCI states, and merge and process the M data according to the redundant version number corresponding to each TCI state.

[0219] Figure 14 A schematic diagram of the structure of a communication device is provided. The communication device 900 can be a terminal device, or a chip, chip system, or processor that supports the terminal device to implement the above method. The device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0220] The communication device 900 may include one or more processors 901. The processor 901 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit (CPU). The baseband processor may be used to process communication protocols and communication data, while the CPU may be used to control a communication device (e.g., a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU), execute software programs, and process data in the software programs.

[0221] Optionally, the communication device 900 may include one or more memories 902, on which instructions 904 may be stored. The instructions may be executed on the processor 901, causing the device 900 to perform the method described in the above method embodiment. Optionally, the memory 902 may also store data. The processor 901 and memory 902 may be provided separately or integrated together.

[0222] Optionally, the communication device 900 may further include a transceiver 905 and an antenna 906. The transceiver 905 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is configured to implement transceiver functions. The transceiver 905 may include a receiver and / or a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function.

[0223] The communication device 900 is a terminal device: the processor 901 is used to execute Figure 5 Step 503 in the execution Figure 11 Step 602 in the execution Figure 12 Step 702 in the embodiment. The transceiver 905 is used to perform Figure 5 Steps 501 and 502 in the above example; Figure 11 Step 601 in the execution Figure 12Step 701 in .

[0224] In the embodiment of the present application, the processor 901 may include a modulation and demodulation module. The processing flow of the modulation and demodulation module can be found in Figure 13 . Figure 13 In the process, the codeword is processed in sequence through scrambling, modulation mapping, layer mapping, precoding, resource element mapping and waveform generation, and finally the processed signal is sent out through the transceiver 905.

[0225] In another optional design, processor 901 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0226] In another possible design, processor 901 may optionally store instructions 903. Instructions 903, when executed on processor 901, may cause apparatus 900 to perform the method described in the above method embodiment. Instructions 903 may be fixed in processor 901. In this case, processor 901 may be implemented by hardware.

[0227] In another possible design, the communication device 900 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channelmetal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0228] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited thereto. Figure 14 The communication device may be a stand-alone device or may be part of a larger device.

[0229] For the case where the communication device may be a chip or a chip system, see Figure 15 Schematic diagram of the chip structure shown. Figure 15 The chip 1000 shown includes a processor 1001 and an interface 1002. There may be one or more processors 1001, and there may be more than one interface 1002.

[0230] For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present application: the interface 1002 is used to receive resource indication information corresponding to N transmission configuration indication TCI states; M data is received through N TCI states; the processor 1001 is used to determine that the transmission mode of the M data is a frequency division multiplexing transmission mode when the resource indication information meets the frequency division multiplexing condition.

[0231] Optionally, the chip further includes a memory 1003, and the memory 1003 is used to store program instructions and data necessary for the terminal device.

[0232] Figure 16 A schematic diagram of the structure of a terminal device is provided. For ease of explanation, Figure 16 The main components of the terminal equipment are shown in Figure 1. Figure 16 As shown, the terminal device 1100 includes a processor, a memory, a control circuit, an antenna, and input / output devices. The processor is primarily used to process communication protocols and communication data, as well as to control the entire terminal, execute software programs, and process software program data. The memory is primarily used to store software programs and data. The control circuit may include a radio frequency circuit, which is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, display, and keyboard, are primarily used to receive data input by the user and output data to the user.

[0233] When the terminal device is powered on, the processor reads the software program from the storage unit, parses and executes the software program's instructions, and processes the software program's data. When transmitting data wirelessly, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the RF circuit. The RF circuit processes the baseband signal to obtain an RF signal and transmits the RF signal to the outside in the form of electromagnetic waves via the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal via the antenna, which is further converted into a baseband signal and output to the processor. The processor converts the baseband signal into data and processes the data.

[0234] For ease of explanation, Figure 16 A memory and a processor are shown. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiments of the present application.

[0235] As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data, and the central processing unit is mainly used to control the entire terminal device, execute software programs, and process software program data. Figure 16The processor in the embodiment integrates the functions of the baseband processor and the central processing unit. Those skilled in the art will appreciate that the baseband processor and the central processing unit may also be independent processors interconnected through technologies such as buses. Those skilled in the art will appreciate that a terminal device may include multiple baseband processors to adapt to different network standards, and a terminal device may include multiple central processing units to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data may be built into the processor, or may be stored in a storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0236] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present application.

[0237] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer-readable storage medium is executed by a computer, the functions of any of the above method embodiments are realized.

[0238] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0239] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer 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 instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0240] Those skilled in the art will understand that the various numerical numbers such as first and second involved in this application are for the convenience of description and are not used to limit the scope of the embodiments of this application, but also indicate the order of precedence.

[0241] The correspondences shown in the tables in this application can be configured or predefined. The values of the information in each table are examples and can be configured to other values, which are not limited by this application. When configuring the correspondence between information and various parameters, it is not necessary to configure all the correspondences shown in each table. For example, in the tables in this application, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also use other names that can be understood by the communication device, and the values or representations of the parameters may also use other values or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0242] The predefined in this application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0243] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0244] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0245] The above description is a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for determining a transmission mode, characterized in that: include: Receive resource indication information corresponding to N transmission configuration indication TCI states, where N is an integer greater than or equal to 2; The resource indication information is used to indicate the frequency domain resource allocation type; receiving M data through the N TCI states, where M is an integer greater than or equal to 2; When the frequency domain resource allocation type is type 2, it is determined that the transmission mode of the M data is a frequency division multiplexing transmission mode.

2. The method according to claim 1, characterized in that The frequency division multiplexing transmission mode is a frequency division multiplexing transmission mode based on multiple TCI states. In the frequency division multiplexing transmission mode based on the multiple TCI states, the same data is transmitted simultaneously through the multiple TCI states and the frequency domain resources corresponding to any two TCI states in the multiple TCI states are different.

3. The method according to claim 1 or 2, characterized in that The resource indication information is carried in radio resource control RRC signaling, downlink control information DCI or media access control MAC control element CE signaling.

4. The method according to claim 1 or 2, characterized in that The method further comprises: Determine whether the frequency division multiplexing transmission mode is a first frequency division multiplexing transmission mode or a second frequency division multiplexing transmission mode; under the first frequency division multiplexing transmission mode, the M data transmitted through the N TCI states correspond to the same codeword; under the second frequency division multiplexing transmission mode, the M data transmitted through the N TCI states correspond to N different codewords.

5. The method according to claim 4, characterized in that The determining that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode includes: Obtain codeword indication information; The number of codewords schedulable by a single DCI indicated by the codeword indication information is 1, and the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode; The number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode.

6. The method according to claim 5, characterized in that The number of codewords schedulable for a single DCI indicated by the codeword indication information is greater than one, and determining that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode includes: The number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the number of valid codewords among the N different codewords is greater than 1, and the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode.

7. The method according to claim 4, characterized in that The determining that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode or the second frequency division multiplexing transmission mode includes: When the reported capability indication information indicates that the terminal device supports simultaneous reception of multiple codewords or multiple redundant versions of the same data, the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode; otherwise, the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode.

8. The method according to claim 4, characterized in that The method further comprises: The frequency division multiplexing transmission mode is a first frequency division multiplexing transmission mode, which determines the redundant version number of the same codeword corresponding to the N TCI states, and merges the M data according to the redundant version number; the frequency division multiplexing transmission mode is a second frequency division multiplexing transmission mode, which determines the redundant version number corresponding to each TCI state in the N TCI states, and merges the M data according to the redundant version number corresponding to each TCI state.

9. A communication device, characterized in that: including a processing unit and a transceiver unit; The transceiver unit is configured to receive resource indication information corresponding to N transmission configuration indication TCI states, where N is an integer greater than or equal to 2; the resource indication information is used to indicate a frequency domain resource allocation type; and receive M data through the N TCI states, where M is an integer greater than or equal to 2; The processing unit is configured to determine, when the frequency domain resource allocation type is type 2, that the transmission mode of the M data is a frequency division multiplexing transmission mode.

10. The communication device according to claim 9, wherein: The frequency division multiplexing transmission mode is a frequency division multiplexing transmission mode based on multiple TCI states. In the frequency division multiplexing transmission mode based on the multiple TCI states, the same data is transmitted simultaneously through the multiple TCI states and the frequency domain resources corresponding to any two TCI states in the multiple TCI states are different.

11. The communication device according to claim 9 or 10, characterized in that: The resource indication information is carried in radio resource control RRC signaling, downlink control information DCI or media access control MAC control element CE signaling.

12. The communication device according to claim 9 or 10, characterized in that The processing unit is further used to determine whether the frequency division multiplexing transmission mode is a first frequency division multiplexing transmission mode or a second frequency division multiplexing transmission mode; in the first frequency division multiplexing transmission mode, the M data transmitted through the N TCI states correspond to the same codeword; in the second frequency division multiplexing transmission mode, the M data transmitted through the N TCI states correspond to N different codewords.

13. The communication device according to claim 12, wherein: The processing unit is specifically used to obtain codeword indication information; the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is 1, and the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode; the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode.

14. The communication device according to claim 13, wherein: The processing unit is specifically used to determine that the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the number of valid codewords among the N different codewords is greater than 1, and the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode.

15. The communication device according to claim 12, wherein: The processing unit is specifically used to determine that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode when the reported capability indication information indicates that the terminal device supports simultaneous reception of multiple codewords or multiple redundant versions of the same data; otherwise, determine that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode.

16. The communication device according to claim 12, wherein: The processing unit is further configured to, when the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode, determine a redundancy version number of the same codeword corresponding to the N TCI states, and merge the M data according to the redundancy version number; The frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode, the redundant version number corresponding to each TCI state in the N TCI states is determined, and the M data are merged according to the redundant version number corresponding to each TCI state.

17. A communication device, characterized in that: Includes processor and transceiver; The transceiver is configured to receive resource indication information corresponding to N transmission configuration indication TCI states, where N is an integer greater than or equal to 2; the resource indication information is used to indicate a frequency domain resource allocation type; and receive M data through the N TCI states, where M is an integer greater than or equal to 2; The processor is configured to determine, when the frequency domain resource allocation type is type 2, that the transmission mode of the M data is a frequency division multiplexing transmission mode.

18. The communication device according to claim 17, wherein: The frequency division multiplexing transmission mode is a frequency division multiplexing transmission mode based on multiple TCI states. In the frequency division multiplexing transmission mode based on the multiple TCI states, the same data is transmitted simultaneously through the multiple TCI states and the frequency domain resources corresponding to any two TCI states in the multiple TCI states are different.

19. The communication device according to claim 17 or 18, characterized in that The resource indication information is carried in radio resource control RRC signaling, downlink control information DCI or media access control MAC control element CE signaling.

20. The communication device according to claim 17 or 18, characterized in that The processor is further used to determine whether the frequency division multiplexing transmission mode is a first frequency division multiplexing transmission mode or a second frequency division multiplexing transmission mode; in the first frequency division multiplexing transmission mode, the M data transmitted through the N TCI states correspond to the same codeword; in the second frequency division multiplexing transmission mode, the M data transmitted through the N TCI states correspond to N different codewords.

21. The communication device according to claim 20, wherein: The processor is specifically used to obtain codeword indication information; the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is 1, and the frequency division multiplexing transmission mode is determined to be the first frequency division multiplexing transmission mode; the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the frequency division multiplexing transmission mode is determined to be the second frequency division multiplexing transmission mode.

22. The communication device according to claim 21, wherein: The processor is specifically used to determine that the number of codewords that can be scheduled by a single DCI indicated by the codeword indication information is greater than 1, and the number of valid codewords among the N different codewords is greater than 1, and determine that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode.

23. The communication device according to claim 20, wherein: The processor is specifically used to determine that the frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode when the reported capability indication information indicates that the terminal device supports simultaneous reception of multiple codewords or multiple redundant versions of the same data; otherwise, determine that the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode.

24. The communication device according to claim 20, wherein: The processor is further configured to, when the frequency division multiplexing transmission mode is the first frequency division multiplexing transmission mode, determine a redundancy version number of the same codeword corresponding to the N TCI states, and merge the M data according to the redundancy version number; The frequency division multiplexing transmission mode is the second frequency division multiplexing transmission mode, the redundant version number corresponding to each TCI state in the N TCI states is determined, and the M data are merged according to the redundant version number corresponding to each TCI state.

25. A communication device, characterized in that: include: A processor, wherein when the processor calls a computer program in a memory, the method according to any one of claims 1 to 8 is executed.

26. A communication device, characterized in that: include: memory and processor; The memory is used to store a computer program. When the processor calls the computer program in the memory, the communication device executes the method according to any one of claims 1 to 8.

27. A computer-readable storage medium, characterized in that The computer-readable storage medium includes instructions, and when the instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 8.

28. A computer program product, characterized in that The computer program product comprises a computer program or instructions, and when the computer program or instructions are run on a computer, the computer is caused to perform the method according to any one of claims 1 to 8.

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