Wireless communication method, terminal device and network device

Abstract

Provided are a wireless communication method, a terminal device and a network device. The wireless communication method comprises: a terminal device reporting first capability information to a network device, wherein the first capability information is configured to indicate a transmission configuration and / or a transmission scheme supported by the terminal device in the case of superposed transmission of DMRSs and data.

Description

Wireless communication methods, terminal devices, and network devices Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal device, and network device. Background Technology

[0002] To improve spectrum efficiency, some communication systems (such as 6G systems) may introduce a scheme that overlays a demodulation reference signal (DMRS) with data transmission. In this scenario, there may be a problem where the terminal device is unable to demodulate the data overlaid with the DMRS. Summary of the Invention

[0003] This application provides a wireless communication method, terminal device, and network device. The various aspects covered by this application are described below.

[0004] In a first aspect, a wireless communication method is provided, comprising: a terminal device reporting first capability information to a network device, the first capability information being used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission.

[0005] In a second aspect, a wireless communication method is provided, comprising: a network device receiving first capability information reported by a terminal device, the first capability information indicating the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission; the network device sending scheduling information to the terminal device, the scheduling information being determined based on the first capability information, the scheduling information indicating whether to schedule the terminal device to perform DMRS and data overlay transmission and / or indicating the transmission parameters when the terminal device performs DMRS and data overlay transmission.

[0006] Thirdly, a terminal device is provided, comprising: a first reporting module, configured to report first capability information to a network device, the first capability information being used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission.

[0007] Fourthly, a network device is provided, comprising: a receiving module, configured to receive first capability information reported by a terminal device, the first capability information being used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission; and a sending module, configured to send scheduling information to the terminal device, the scheduling information being determined based on the first capability information, the scheduling information being used to indicate whether to schedule the terminal device to perform DMRS and data overlay transmission and / or to indicate the transmission parameters when the terminal device performs DMRS and data overlay transmission.

[0008] Fifthly, a terminal device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the first aspect.

[0009] In a sixth aspect, a network device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.

[0010] Seventhly, embodiments of this application provide a communication system including the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.

[0011] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a computer to perform some or all of the steps in the methods described above.

[0012] Ninthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0013] In a tenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0014] In this embodiment, the terminal device can report the supported transmission configuration and / or transmission scheme to the network device when DMRS and data overlay transmission are used. The network device can then determine whether to schedule overlay transmission and / or determine the configuration parameters to be used during overlay transmission based on the information reported by the terminal device. In other words, the terminal device can determine the transmission configuration and / or transmission scheme that supports overlay transmission based on its own capabilities. This allows the network device to perform reasonable scheduling based on the information reported by the terminal device. On the one hand, this improves the success rate of demodulating DMRS-overlayed data by the terminal device; on the other hand, it allows for maximizing transmission performance by utilizing overlay transmission within the limits of the terminal device's capabilities. Attached Figure Description

[0015] Figure 1 is a system architecture example diagram of a wireless communication system applicable to embodiments of this application.

[0016] Figure 2 is an example diagram of a DMRS and data transmission method.

[0017] Figure 3 is an example diagram of another transmission method for DMRS and data.

[0018] Figure 4 is a flowchart illustrating the wireless communication method provided in an embodiment of this application.

[0019] Figure 5 is a schematic diagram of the structure of the terminal device provided in the embodiment of this application.

[0020] Figure 6 is a schematic diagram of the structure of the network device provided in an embodiment of this application.

[0021] Figure 7 is a schematic structural diagram of the communication device provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0023] Figure 1 is a system architecture example diagram of a wireless communication system 100 to which embodiments of this application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0024] Figure 1 illustrates an exemplary network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.

[0025] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0026] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0027] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0028] The network device in this application embodiment can be a device used to communicate with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, secondary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0029] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0030] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0031] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0032] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0033] Currently, in some communication systems (such as NR systems), DMRS and data occupy different time-frequency resources for transmission to ensure their respective transmission performance. In other words, DMRS and data are transmitted using orthogonal transmission. Taking the NR system as an example, the transmission method of DMRS and data in the NR system is shown in Figure 2. As shown in Figure 2, DMRS is transmitted on the fourth orthogonal frequency division multiplexing (OFDM) symbol within a time slot, while data transmission begins after the time domain resource where DMRS resides (i.e., the fourth OFDM symbol).

[0034] To reduce DMRS overhead and increase transmission rate, a method of superimposed DMRS and data transmission can be considered. This method is illustrated in Figure 3. As shown in Figure 3, in this method, DMRS and data can occupy the same physical resources (i.e., the DMRS and data signals of the same terminal device are superimposed on the same resources). For the receiving end, the interference cancellation process can reduce or eliminate the mutual interference between DMRS and data, allowing for successful data detection. For example, the receiving end can use the interference cancellation process of an artificial intelligence (AI) receiver or a non-AI receiver to reduce or eliminate the mutual interference between DMRS and data, thus successfully detecting the data. In Figure 3, the physical resources used for data transmission can simultaneously superimpose DMRS transmission, eliminating the need for dedicated resources for DMRS transmission. This significantly reduces pilot resource overhead and improves downlink spectral efficiency.

[0035] In some implementations, DMRS and data overlay transmission can refer to the overlay transmission of DMRS and data across the entire physical downlink shared channel (PDSCH) resource.

[0036] In some implementations, DMRS and data overlay transmission can refer to overlaying DMRS onto a portion of the data resource elements (REs) in the PDSCH.

[0037] In some embodiments, when DMRS and data are transmitted in an overlay configuration, the DMRS and data can be transmitted in an overlay configuration using a certain transmit power ratio. This transmit power ratio between the DMRS and data is typically configured by the network device for the terminal device, used by the terminal device to select the appropriate receiver for reception (downlink), or used by the terminal device to determine the transmit power of the DMRS and data (uplink).

[0038] Overlaying DMRS with data transmission can reduce pilot resource overhead, thereby improving spectral efficiency. However, in this scenario, there may be a problem where the terminal device cannot demodulate the data overlaid with DMRS.

[0039] To address the aforementioned issues, the inventors discovered that DMRS and data overlay transmission relies on advanced receivers. These receivers have specific requirements for transmission configuration (or transmission resources) and / or transmission schemes; not all terminal devices can demodulate DMRS-overlayed data under all configuration parameters. Furthermore, different terminal devices employ different receiver algorithms or AI models during detection, resulting in varying supported transmission configurations and / or schemes. Therefore, if the network device is unaware of the terminal device's receiving capabilities, the scheduling scheme determined by the network device may be unreasonable, leading to the terminal device's inability to demodulate DMRS-overlayed data.

[0040] Based on this, embodiments of this application propose that the terminal device can report the supported transmission configuration and / or transmission scheme in the case of DMRS and data overlay transmission to the network device. The network device can then determine whether to schedule overlay transmission and / or determine the configuration parameters to be used during overlay transmission based on the information reported by the terminal device. In other words, the terminal device can determine the transmission configuration and / or transmission scheme that supports overlay transmission based on its own capabilities. This allows the network device to perform reasonable scheduling based on the information reported by the terminal device. On the one hand, this improves the success rate of demodulating DMRS-overlayed data by the terminal device; on the other hand, it allows for maximizing transmission performance by utilizing overlay transmission as much as possible, without exceeding the capabilities of the terminal device.

[0041] The method embodiments of this application are described below.

[0042] Figure 4 is a flowchart illustrating a wireless communication method provided in an embodiment of this application. Figure 4 is presented from the perspective of interaction between a terminal device and a network device, which can be, for example, the terminal device 120 and the network device 110 shown in Figure 1. The method shown in Figure 4 may include steps S410 and S420, which will be described below.

[0043] In step S410, the terminal device reports the first capability information to the network device.

[0044] In the embodiments of this application, the first capability information can be used to indicate the transmission parameters supported by the terminal device in the case of DMRS and data overlay transmission. For example, the first capability information can be used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission. That is, the first capability information can be used by the network device to determine the transmission configuration and / or transmission scheme that the terminal device can support in the case of DMRS and data overlay transmission.

[0045] As an example, first capability information can be used to indicate the transport configuration (or transport resources) supported by the terminal device in the case of DMRS and data overlay transmission.

[0046] As another example, first capability information can be used to indicate the transmission schemes supported by the terminal device in the case of DMRS and data overlay transmission.

[0047] As another example, first capability information can be used to indicate the transmission configuration and transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission.

[0048] This application does not limit the method of carrying the first capability information. For example, the first capability information may be carried in one or more of the following signaling: radio resource control (RRC) signaling, medium access control control element (MAC CE), and uplink control information (UCI).

[0049] As an example, primary capability information can be carried in RRC signaling.

[0050] As another example, primary capability information can be carried on MAC CE.

[0051] As yet another example, primary capability information can be carried by the UCI.

[0052] As another example, some information in the first capability information can be carried in RRC signaling, while other information can be carried in MAC CE.

[0053] As another example, some of the information in the first capability information can be carried in RRC signaling, while the other part can be carried in UCI.

[0054] As another example, some of the information in the first capability information can be carried in MAC CE, and the other part can be carried in UCI.

[0055] As another example, some information in the first capability information can be carried in RRC signaling, some in MAC CE, and some in UCI.

[0056] In some embodiments, the first capability information can be carried by the auxiliary information of the terminal device, that is, the first capability information can be carried by UE assistance information (UAI).

[0057] This application does not limit the first capability information, as long as it can indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data superimposed transmission. For example, the first capability information can be used to indicate one or more of the following: time information required for detecting PDSCH in the case of DMRS and data superimposed transmission; resource-related information required for processing PDSCH in the case of DMRS and data superimposed transmission; power-related information in the case of DMRS and data superimposed transmission; rank-related information in the case of DMRS and data superimposed transmission; modulation and coding scheme (MCS)-related information in the case of DMRS and data superimposed transmission; DMRS pattern-related information in the case of DMRS and data superimposed transmission; multi-user multiplexing-related information in the case of DMRS and data superimposed transmission; and transmission scheme-related information in the case of DMRS and data superimposed transmission.

[0058] In some embodiments, the resource-related information required for processing PDSCH may include one or more of the following: minimum resource information, physical resource block (PRB) bundling information, and transport block size information.

[0059] In some embodiments, power-related information may include one or more of the following: dynamic power information, maximum power information, and minimum power information.

[0060] In some embodiments, rank-related information may include one or more of the following: maximum rank information, dynamic rank information.

[0061] In some embodiments, MCS-related information may include one or more of the following: maximum MCS information, dynamic modulation information, and MCS table information.

[0062] In some embodiments, DMRS pattern-related information may include one or more of the following: DMRS pattern information and dynamic DMRS pattern information. In some embodiments, dynamic DMRS pattern information may also be understood as a portion of the DMRS pattern information.

[0063] In some embodiments, transmission scheme-related information may include one or more of the following: multi-user multiplexing information, multi-user handover information, multiple TRP transmission information, TRP handover information, receiver handover information, and multi-carrier information. In some embodiments, multi-user handover information can be understood as a portion of the multi-user multiplexing information. In some embodiments, TRP handover information can be understood as a portion of the multiple TRP transmission information.

[0064] In some embodiments, the first capability information may include one or more of the following: PDSCH processing time information, minimum resource information, PRB bundling information, dynamic power information, maximum rank information, dynamic rank information, maximum MCS information, dynamic modulation information, transport block size information, DMRS pattern information, dynamic DMRS pattern information, multi-user multiplexing information, multi-user handover information, multi-TRP transmission information, TRP handover information, MCS table information, receiver handover information, and multi-carrier information.

[0065] In some embodiments, the first capability information may include one of the information described above. As an example, the first capability information may include PDSCH processing time information. As another example, the first capability information may include minimum resource information. As yet another example, the first capability information may include PRB bundling information. As yet another example, the first capability information may include dynamic power information. As yet another example, the first capability information may include maximum rank information. As yet another example, the first capability information may include dynamic rank information. As yet another example, the first capability information may include maximum MCS information. As yet another example, the first capability information may include dynamic modulation information. As yet another example, the first capability information may include transport block size information. As yet another example, the first capability information may include DMRS pattern information. As yet another example, the first capability information may include dynamic DMRS pattern information. As yet another example, the first capability information may include multi-user multiplexing information. As yet another example, the first capability information may include multi-user handover information. As yet another example, the first capability information may include multiple TRP information. As yet another example, the first capability information may include TRP handover information. As yet another example, the first capability information may include MCS table information. As yet another example, the first capability information may include receiver handover information. As yet another example, the first capability information may include multicarrier information.

[0066] In some embodiments, the first capability information may include multiple types of the information described above. As an example, the first capability information may include PDSCH processing time information and minimum resource information. As another example, the first capability information may include maximum rank information and maximum MCS information. As yet another example, the first capability information may include minimum resource information, maximum rank information, and maximum MCS information. As yet another example, the first capability information may include PDSCH processing time information, multi-user multiplexing information, and multi-TRP transmission information. As yet another example, the first capability information may include maximum rank information, maximum MCS information, and multi-user multiplexing information. As yet another example, the first capability information may include maximum rank information, maximum MCS information, and multi-TRP transmission information.

[0067] It should be noted that the above examples are merely illustrations. The first capability information can include any combination of the above information, such as any combination of two or more pieces of information. For the sake of brevity, these will not be listed here.

[0068] In some embodiments, when a terminal device reports first capability information to a network device, it may report the first capability information in the form of a capability level. In some embodiments, the capability level may be used to indicate one of the aforementioned information. In some embodiments, the capability level may be used to indicate multiple of the aforementioned information.

[0069] Further information regarding the primary ability can be found below, and will not be elaborated upon here.

[0070] In step S420, the network device sends scheduling information to the terminal device.

[0071] In this embodiment of the application, the scheduling information can be used to indicate whether to schedule the terminal device to perform DMRS and data overlay transmission and / or to indicate the transmission parameters when the terminal device performs DMRS and data overlay transmission.

[0072] As an example, this scheduling information can be used to indicate whether to schedule terminal devices for DMRS and data overlay transmission.

[0073] As another example, this scheduling information can be used to instruct terminal devices on transmission parameters when performing DMRS and data overlay transmissions.

[0074] As another example, the scheduling information can be used to instruct the scheduling terminal device to perform DMRS and data overlay transmission, and to instruct the terminal device on the transmission parameters when performing DMRS and data overlay transmission.

[0075] In some embodiments, the scheduling information is determined based on first capability information. That is, the network device can schedule the terminal device to perform transmission based on the first capability information reported by the terminal device. For example, the network device can determine whether to schedule the terminal device to perform DMRS and data overlay transmission based on the first capability information reported by the terminal device. As another example, if the network device determines to schedule the terminal device to perform DMRS and data overlay transmission based on the first capability information reported by the terminal device, the network device can configure the transmission parameters for DMRS and data overlay transmission to the terminal device based on the first capability information.

[0076] In some embodiments, the transmission parameters indicated in the scheduling information sent by the network device cannot exceed the transmission configuration and / or transmission scheme indicated in the first capability information. In other words, the transmission parameters indicated in the scheduling information sent by the network device must satisfy the transmission configuration and / or transmission scheme indicated in the first capability information. For example, when the network device wants to schedule a terminal device to perform DMRS and data overlay transmission, the transmission parameters indicated in the scheduling information sent by the network device for DMRS and data overlay transmission must satisfy the transmission configuration and / or transmission scheme indicated in the first capability information.

[0077] Taking the first capability information including the maximum rank information as an example, the rank information indicated in the scheduling information sent by the network device cannot exceed the maximum rank information indicated by the first capability information.

[0078] Taking the first capability information including DMRS pattern information as an example, the DMRS pattern indicated in the scheduling information sent by the network device needs to be one or more of the DMRS patterns indicated by the first capability information.

[0079] In some embodiments, if the transmission parameters indicated in the scheduling information sent by the network device satisfy the transmission configuration and / or transmission scheme indicated in the first capability information, the terminal device can detect the PDSCH carrying the superimposed transmission and report the feedback information (such as HARQ-ACK information) of the corresponding PDSCH.

[0080] In some embodiments, if the transmission parameters indicated in the scheduling information sent by the network device do not meet the transmission configuration and / or transmission scheme indicated in the first capability information, the terminal device may not report the feedback information (such as HARQ-ACK information) of the corresponding PDSCH, or the terminal device may not detect the PDSCH carrying the superimposed transmission.

[0081] In some embodiments, if the network device determines that the transmission configuration and / or transmission scheme indicated in the first capability information cannot be satisfied, the network device may not schedule the terminal device to perform DMRS and data overlay transmission, but instead employ other transmission schemes (e.g., scheduling the terminal device to perform DMRS and data orthogonal transmission). For example, if the network device determines that the minimum resource data cannot be satisfied, the network device may not schedule the terminal device to perform DMRS and data overlay transmission, but instead schedule the terminal device to perform DMRS and data orthogonal transmission.

[0082] In some embodiments, the scheduling information is used to indicate whether to schedule the terminal device to perform DMRS and data overlay transmission. It can also be understood or replaced as follows: the scheduling information can be used to indicate the transmission scheme of the terminal device, which may include a DMRS and data overlay transmission scheme and other transmission schemes (e.g., a DMRS and data orthogonal transmission scheme).

[0083] This application embodiment does not limit the transmission parameters indicated by the scheduling information. Exemplarily, the transmission parameters indicated by the scheduling information may include one or more of the following: resources used by the terminal device to perform transmission, the size of the PRB bundle block, the power ratio, the number of transport layers, the MCS, the transport block size, the DMRS pattern, whether to perform multi-user transmission, whether to perform multi-TRP transmission, the MCS table, and whether to perform multi-carrier transmission.

[0084] In some embodiments, the resources for the terminal device to perform transmissions may include resources for the terminal device to perform DMRS and data overlay transmissions. In some embodiments, the resources for the terminal device to perform transmissions may include resources for the terminal device to perform DMRS and data orthogonal transmissions.

[0085] In some embodiments, the power ratio may include the DMRS power ratio and / or the data power ratio. The DMRS power ratio is the percentage of DMRS power on the physical resources used for DMRS and data overlay transmission, and the data power ratio is the percentage of data power on the physical resources used for DMRS and data overlay transmission.

[0086] In some embodiments, the transmission parameters indicated by the scheduling information may include one of the parameters described above. As an example, the transmission parameters indicated by the scheduling information may include resources for the terminal device to perform transmission. As another example, the transmission parameters indicated by the scheduling information may include the size of the PRB bundle block. As yet another example, the transmission parameters indicated by the scheduling information may include the power ratio. As yet another example, the transmission parameters indicated by the scheduling information may include the number of transport layers. As yet another example, the transmission parameters indicated by the scheduling information may include the MCS. As yet another example, the transmission parameters indicated by the scheduling information may include the transport block size. As yet another example, the transmission parameters indicated by the scheduling information may include a DMRS pattern. As yet another example, the transmission parameters indicated by the scheduling information may include whether to perform multi-user transmission. As yet another example, the transmission parameters indicated by the scheduling information may include whether to perform multi-TRP transmission. As yet another example, the transmission parameters indicated by the scheduling information may include an MCS table. As yet another example, the transmission parameters indicated by the scheduling information may include whether to perform multi-carrier transmission.

[0087] In some embodiments, the transmission parameters indicated by the scheduling information may include a variety of the parameters described above. As an example, the transmission parameters indicated by the scheduling information may include the resources used by the terminal device to perform the transmission, and the size of the PRB bundle. As another example, the transmission parameters indicated by the scheduling information may include the size of the PRB bundle and the power ratio. As yet another example, the transmission parameters indicated by the scheduling information may include the size of the PRB bundle, the MCS, and the MCS table. As yet another example, the transmission parameters indicated by the scheduling information may include the MCS, the DMRS pattern, and whether to perform multi-TRP transmission.

[0088] It should be noted that the above examples are merely illustrations. The transmission parameters indicated by the scheduling information can include any combination of the above parameters, such as any combination of two or more parameters. For the sake of brevity, they will not be listed here.

[0089] To facilitate understanding, the first capability information will be described in more detail below with reference to different embodiments.

[0090] Example 1: The first capability information includes PDSCH processing time information.

[0091] In Embodiment 1, the terminal device reports first capability information to the network device, the first capability information including PDSCH processing time information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including PDSCH processing time information.

[0092] PDSCH processing time information can be used to indicate the time required for the terminal device to detect the first PDSCH, which carries overlaid DMRS and data.

[0093] In some embodiments, the method of Embodiment 1 may further include: the terminal device determining the minimum time interval between the transmission end time of the first PDSCH and the transmission start time of the uplink channel carrying the feedback information of the first PDSCH, based on the time required to detect the first PDSCH.

[0094] The embodiments of this application do not limit the granularity of the transmission end time of the first PDSCH. For example, the transmission end time of the first PDSCH may refer to the last OFDM symbol of the first PDSCH. Another example is that the transmission end time of the first PDSCH may refer to the last time slot of the first PDSCH. Yet another example is that the transmission end time of the first PDSCH may refer to a time unit introduced in a future communication system.

[0095] This application does not limit the granularity of the transmission start time of the uplink channel carrying the feedback information of the first PDSCH. The transmission start time of the uplink channel carrying the feedback information of the first PDSCH can refer to the first OFDM symbol of the uplink channel carrying the feedback information of the first PDSCH. For example, the transmission start time of the uplink channel carrying the feedback information of the first PDSCH can refer to the first timeslot of the uplink channel carrying the feedback information of the first PDSCH. For example, the transmission start time of the uplink channel carrying the feedback information of the first PDSCH can refer to a time unit introduced in a future communication system.

[0096] In some embodiments, the granularity of the transmission end time of the first PDSCH and the transmission start time of the uplink channel carrying the feedback information of the first PDSCH can be the same. For example, the transmission end time of the first PDSCH may refer to the last OFDM symbol of the first PDSCH, and the transmission start time of the uplink channel carrying the feedback information of the first PDSCH may refer to the first OFDM symbol of the uplink channel carrying the feedback information of the first PDSCH.

[0097] In some embodiments, the uplink channel carrying feedback information of the first PDSCH may include an uplink channel carrying hybrid automatic repeat request-acknowledge (HARQ-ACK) information of the first PDSCH. This application embodiment does not limit the scope of this uplink channel. For example, the uplink channel may include a physical uplink control channel (PUCCH). As another example, the uplink channel may include a physical uplink shared channel (PUSCH).

[0098] In some embodiments, the minimum time interval can be determined based on one or more of the following: the time required to detect the first PDSCH as indicated by the PDSCH processing time information, the number of OFDM symbols occupied by the first PDSCH, the scaling factor of the subcarrier spacing, and the exponent of the subcarrier spacing.

[0099] As one implementation method, the aforementioned minimum time interval can be expressed as T. proc,1 =(N1+d) 1,1 (2048+144)·K2 ―μ ·T c Where N1 is the time required to detect the first PDSCH as indicated by the PDSCH processing time information, and d 1,1 The value is determined based on the OFDM symbols occupied by the first PDSCH (pre-agreed upon by the terminal equipment and the network equipment), K is the scaling factor of the subcarrier spacing, and μ is the exponent of the subcarrier spacing.

[0100] In some embodiments, to support different terminal detection capabilities, multiple different PDSCH processing time capabilities can be introduced for terminal device reporting. For example, a first terminal device capability and a second terminal device capability can be introduced, wherein the PDSCH processing time information corresponding to the terminal device with the first terminal device capability is different from the PDSCH processing time information corresponding to the terminal device with the second terminal device capability.

[0101] In some embodiments, the time required to detect the first PDSCH is different from the time required to detect the second PDSCH. The second PDSCH carries orthogonally transmitted DMRS and data, meaning the DMRS and data employ existing orthogonal multiplexing methods.

[0102] In some implementations, detecting the first PDSCH takes longer than detecting the second PDSCH. When DMRS and data are overlaid, the terminal device must wait until the entire PDSCH has been received before starting the channel estimation and detection process. Furthermore, complex interference cancellation is typically performed during detection. Therefore, the PDSCH processing time required by the terminal device in this case is longer than that required when DMRS and data are transmitted orthogonally. For example, Table 1 shows the time required to detect the first PDSCH under different subcarrier spacings in the capabilities of the first terminal device.

[0103] Table 1

[0104] In other implementations, if the terminal device deploys an advanced receiver based on an AI model for detecting superimposed transmissions, the detection process can be completed in a very short time. This means the required PDSCH processing time is significantly shorter than in the aforementioned cases, and even shorter than the time required to detect the second PDSCH. For example, in the second terminal device capability, the time required to detect the first PDSCH under different subcarrier intervals is shown in Table 2.

[0105] Table 1

[0106] In some embodiments, the terminal device can report the time required to detect the first PDSCH and the time required to detect the second PDSCH separately (independently), so that the network device can schedule the first PDSCH and the second PDSCH according to the reported time. The time required to detect the second PDSCH can also be categorized based on different terminal capabilities, as described in relevant technologies (such as TS.38.214).

[0107] In some embodiments, the method of Example 1 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on the PDSCH processing time information.

[0108] In some implementations, the network device can determine the minimum time interval between the end time of the first PDSCH transmission and the start time of the uplink channel carrying the feedback information of the first PDSCH, based on the PDSCH processing time information. For example, the network device can determine the minimum time interval between the last OFDM symbol of the first PDSCH and the first OFDM symbol of the uplink channel carrying the HARQ-ACK information of the first PDSCH, based on the PDSCH processing time information.

[0109] In some embodiments, when a network device schedules a terminal device to perform superimposed transmission of DMRS and data on the first PDSCH, it needs to ensure that the first time interval is greater than or equal to (or not less than) the minimum time interval. The first time interval is the time interval between the end time of the first PDSCH transmission and the start time of the uplink channel carrying the feedback information of the first PDSCH. That is, the time interval between the actual end time of the first PDSCH transmission on the network and the start time of the configured uplink channel carrying the feedback information of the first PDSCH cannot be less than the minimum time interval.

[0110] As an example, when a network device schedules a terminal device to perform superimposed transmission of DMRS and data on the first PDSCH, it needs to ensure that the time interval (i.e., the first time interval) between the last OFDM symbol of the first PDSCH and the first OFDM symbol of the uplink channel carrying the HARQ-ACK information of the first PDSCH is greater than or equal to the minimum time interval.

[0111] In some embodiments, the method of Example 1 may further include: the terminal device receiving scheduling information from the network device, and when the scheduling information satisfies the PDSCH processing time information, reporting feedback information (such as HARQ-ACK information) carrying the superimposed transmission of the PDSCH. That is, the terminal device can report feedback information (such as HARQ-ACK information) to the network device when the above minimum time interval is met.

[0112] The scheduling information satisfying the PDSCH processing time information (or the scheduling information satisfying the minimum time interval) means that when the terminal device is scheduled to perform DMRS and data overlay transmission on the first PDSCH, the time interval between the end time of the first PDSCH transmission (e.g., the last OFDM symbol) and the start time of the uplink channel carrying the feedback information of the first PDSCH (e.g., the first OFDM symbol) (i.e., the first time interval) must be greater than or equal to the minimum time interval obtained according to the first capability information. Only under these conditions will the terminal device report the feedback information. In other words, the terminal device expects the first time interval to be greater than (or greater than or equal to) the minimum time interval, or does not expect the first time interval to be less than or equal to (or less than) the minimum time interval. Otherwise, due to insufficient processing time, the terminal device may not report the feedback information, or the terminal device may not detect the first PDSCH.

[0113] Based on Embodiment 1, the terminal device can report the processing time required to detect the first PDSCH (including overlay transmission) and the processing time required to detect the second PDSCH (including orthogonal transmission) separately (independently). Thus, the network device can schedule the first PDSCH and the second PDSCH according to the reported PDSCH processing time information, so as to avoid the HARQ feedback delay exceeding the detection capability of the terminal device.

[0114] Example 2: The first capability information includes minimum resource information.

[0115] In Embodiment 2, the terminal device reports first capability information to the network device, the first capability information including minimum resource information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including minimum resource information.

[0116] Minimum resource information can be used to indicate the minimum amount of resources required for a terminal device to support DMRS and data overlay transmission, or it can be used to indicate the minimum amount of resources required for a terminal device to detect data overlay transmission with DMRS.

[0117] In some embodiments, the minimum resource quantity is the minimum number of PRBs or the minimum number of resource elements (REs). That is, the minimum resource information can indicate the minimum number of PRBs required for the terminal device to support DMRS and data overlay transmission; or, the minimum resource information can indicate the minimum number of REs required for the terminal device to support DMRS and data overlay transmission; or, the minimum resource information can indicate the minimum number of PRBs required for the terminal device to detect data overlay transmission with DMRS; or, the minimum resource information can indicate the minimum number of REs required for the terminal device to detect data overlay transmission with DMRS.

[0118] In some embodiments, the minimum resource information can be selected and reported by the terminal device from one or more candidate values. For example, the terminal device and the network device can pre-agree on several candidate values ​​for the minimum resource quantity, and the terminal device reports one of these values ​​through first capability information.

[0119] Because DMRS transmits at a lower power during superimposed transmission, a certain number of PRBs or REs are needed to ensure the signal-to-interference-plus-noise ratio (SINR) of the DMRS meets a certain threshold in order to guarantee the performance of channel estimation. If the number of PRBs or REs is too small, the channel estimation performance will deteriorate sharply, making it difficult to detect data correctly. Different terminal devices use receivers with different capabilities, and the minimum number of resources required will also be different. Therefore, it is necessary to report the terminal capability; otherwise, it is difficult to guarantee detection performance. For example, for some receivers with strong detection capabilities, only a small number of resources are needed for successful detection, and the terminal device can report a small value. If traditional DMRS and data orthogonal transmission are used, any number of physical resources can be used for detection, so this terminal capability is not required.

[0120] In some embodiments, the minimum resource quantity mentioned above may be the minimum resource quantity required for PDSCH to perform overlay transmission. For example, when overlay transmission is performed on all resources of the PDSCH, the minimum resource quantity mentioned above may be the minimum resource quantity required for PDSCH to perform overlay transmission.

[0121] In some embodiments, the aforementioned minimum resource quantity may be the minimum number of resources required for DMRS to be transmitted overlay with data in the physical resources of the PDSCH, i.e., the minimum number of REs actually transmitted overlay. For example, when overlay transmission is performed on some resources of the PDSCH, the aforementioned minimum resource quantity may be the minimum number of resources required for DMRS to be transmitted overlay with data in the physical resources of the PDSCH.

[0122] In some embodiments, the minimum number of resources required may differ under different transmission parameter configurations. For example, the minimum number of resources required will vary depending on the number of transmission layers, modulation scheme, and DMRS power ratio. The higher the number of transmission layers, the higher the modulation and coding order, and the lower the DMRS power ratio, the more DMRS resources are required for detection, and the larger the corresponding minimum number of resources. Therefore, in some embodiments, the minimum number of resources can be associated with the number of transmission layers, modulation and coding order, or DMRS power ratio, and the terminal device can report the required minimum number of resources for different numbers of transmission layers, modulation and coding orders, or DMRS power ratios.

[0123] In some embodiments, the method of Example 2 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on minimum resource information.

[0124] In some implementations, when scheduling the overlay transmission of DMRS and data, network devices need to ensure that the allocated resources meet the minimum resource requirements for overlay transmission. For example, the PDSCH bandwidth allocated by the network device needs to be greater than or equal to the minimum number of PRBs; or, the number of data REs contained in the PDSCH carrying the overlay transmission needs to be greater than or equal to the minimum number of REs. In resource-constrained scenarios, the minimum resource requirements may not be met. In this case, the network device may not schedule terminal devices for overlay transmission, but instead adopt a method of orthogonal transmission of DMRS and data.

[0125] In some embodiments, the method of Embodiment 2 may further include: the terminal device receiving scheduling information sent by the network device, and detecting data superimposed on the DMRS when the resources used for superimposed transmission meet the minimum resource information mentioned above.

[0126] The requirement that the resources used for overlay transmission meet the minimum resource information means that the physical resources allocated by the scheduling information for overlay transmission meet the minimum resource quantity required for overlay transmission, or that the physical resources occupied by the DMRS used for data overlay transmission meet the minimum resource quantity required for overlay transmission. Only then does the terminal device need to detect the corresponding PDSCH. In other words, the terminal device does not expect the physical resources used for overlay transmission to be less than the minimum resource quantity required for overlay transmission. If the resources allocated by the scheduling information cannot meet the minimum resource quantity, the terminal device may not report the feedback information (such as HARQ-ACK information) for the corresponding PDSCH, or the terminal device may not detect the PDSCH carrying the overlay transmission.

[0127] The method in Example 2 can ensure that the physical resources configured in the network device can meet the basic requirements of overlay transmission, so that the terminal device may be able to detect the overlay transmission data and avoid unnecessary detection processes.

[0128] Example 3: The first capability information includes PRB binding information.

[0129] In Embodiment 3, the terminal device reports first capability information to the network device, the first capability information including PRB binding information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including PRB binding information.

[0130] PRB bundling information can be used to indicate the size of the PRB bundle blocks supported by the terminal device in the case of DMRS and data overlay transmission, or it can be used to indicate the precoding granularity supported by the terminal device in the case of DMRS and data overlay transmission.

[0131] In some embodiments, the size of a PRB bundle can also be referred to as the precoding granularity. Different PRB bundles can use different precoding matrices, but the same precoding must be used within the same PRB bundle. For example, the size of a PRB bundle can be 2, 4, 8, or the entire bandwidth, etc. During channel estimation, channel interpolation can only be performed on resources using the same precoding; therefore, each PRB bundle needs to be estimated separately. If an AI-based receiver is used, the size of the PRB bundle configured in the network device can be used as an output parameter of the AI ​​model to ensure that channel estimation follows the above principles. If the PRB bundle size is too small, it will severely degrade channel estimation performance, making it difficult for the terminal device to correctly detect the overlay transmission data.

[0132] In some embodiments, different terminal devices employ receivers with varying capabilities, resulting in different supported PRB bundle sizes. Therefore, reporting via terminal capability is necessary to ensure detection performance. For example, some receivers with strong detection capabilities require minimal DMRS resources for successful detection, allowing the terminal device to report any supported PRB bundle size. In other embodiments, if traditional DMRS and orthogonal data transmission are used, any number of PRB bundle sizes can be detected, thus eliminating the need for this terminal capability.

[0133] This application does not limit the implementation method of using PRB bundling information to indicate the size or precoding granularity of PRB bundles supported by the terminal device. As one implementation, the PRB bundling information can use a bitmap to indicate the size or precoding granularity of PRB bundles that the terminal device can support in overlay transmission. As another implementation, the PRB bundling information can indicate the size or precoding granularity of a PRB bundle, representing the smallest PRB bundle size or smallest precoding granularity supported by the terminal device. As long as it is greater than this value, the terminal device is likely to correctly detect the data.

[0134] In some embodiments, the required PRB bundle size may vary under different transmission parameter configurations. For example, the required PRB bundle size will differ depending on the number of transmission layers, modulation scheme, and DMRS power ratio. The higher the number of transmission layers, the higher the modulation and coding order, and the lower the DMRS power ratio, the larger the required PRB bundle size for detection. Therefore, the PRB bundle size can be associated with the number of transmission layers, modulation and coding order, or DMRS power ratio, and the terminal device can report the required PRB bundle size for different numbers of transmission layers, modulation and coding orders, or DMRS power ratios.

[0135] In some embodiments, the method of Example 3 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on the PRB binding information.

[0136] In some implementations, when scheduling the overlay transmission of DMRS and data, the network device needs to ensure that the size of the configured PRB bundle block meets the size or precoding granularity indicated by the PRB bundling information. For example, the size of the PRB bundle block configured by the network device is the size or precoding granularity indicated by the PRB bundling information. Alternatively, if the PRB bundling information indicates a minimum PRB bundle block size or precoding granularity, the network device needs to ensure that the size of the configured PRB bundle block is not smaller than the size or precoding granularity indicated by the PRB bundling information. In some embodiments, if the PRB bundle block size or precoding granularity cannot be met, the network device may not schedule the terminal device for overlay transmission, but instead use orthogonal transmission of DMRS and data.

[0137] In some embodiments, the method of Example 3 may further include: the terminal device receiving scheduling information from the network device, and detecting data overlaid with DMRS when the size of the configured PRB binding block satisfies the PRB binding information.

[0138] Specifically, when the size of the PRB bundle configured in the scheduling information is the same as the PRB bundle size or precoding granularity indicated by the PRB bundle information, the terminal device can detect data transmitted overlaid with DMRS. Alternatively, if the PRB bundle information indicates a minimum PRB bundle size or minimum precoding granularity, then the terminal device can detect data transmitted overlaid with DMRS when the size of the PRB bundle configured in the scheduling information is not smaller than the PRB bundle size or precoding granularity indicated by the PRB bundle information. In other words, the terminal device does not expect the configured PRB bundle size to exceed the size of the PRB bundles it reports as being able to support.

[0139] In some embodiments, if the size of the PRB bundle block allocated by the scheduling information cannot meet the above PRB bundle information, the terminal device may not report the feedback information (such as HARQ-ACK information) of the corresponding PDSCH, or the terminal device may not detect the PDSCH carrying the superimposed transmission.

[0140] The method in Example 3 can ensure that the size of the PRB binding block configured in the network device can meet the basic requirements of overlay transmission, so that the terminal device may be able to detect the overlay transmission data and avoid unnecessary detection process.

[0141] Example 4: The first capability information includes dynamic power information.

[0142] In Embodiment 4, the terminal device reports first capability information to the network device, the first capability information including dynamic power information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including dynamic power information.

[0143] Dynamic power information can be used to indicate whether a terminal device supports dynamic adjustment of the DMRS power ratio and / or data power ratio. The DMRS power ratio is the power proportion of DMRS on the physical resources used for DMRS and data overlay transmission, and the data power ratio is the power proportion of data on the physical resources used for DMRS and data overlay transmission. Since the sum of these two is always 1, using either parameter for terminal capability reporting is equivalent. The following explanation uses the DMRS power ratio as an example; the corresponding description can also be replaced with the data power ratio.

[0144] In some embodiments, if the terminal device uses an AI-based receiver, different DMRS power ratios may correspond to different AI models for one terminal device; while for another terminal device, the same AI model may be used to support different DMRS power ratios. Since model switching takes time, the former type of terminal device may not be able to support dynamic adjustment of different DMRS power ratios, while the latter type may be able to. Therefore, the ability to support dynamic adjustment of the DMRS power ratio needs to be reported to the network device as a terminal capability, so that the network device can determine whether the power ratio of the terminal device can be dynamically adjusted to achieve better detection performance.

[0145] In some embodiments, the method of Example 4 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on dynamic power information.

[0146] In some implementations, when scheduling the overlay transmission of DMRS and data, if the terminal device does not support dynamic adjustment of the power ratio, the network device cannot adjust the DMRS power ratio of the terminal device; however, if the terminal device supports dynamic adjustment of the power ratio, the network device can adjust the DMRS power ratio of the terminal device to achieve better detection performance. For example, if the terminal device does not support dynamic adjustment of the power ratio, the network device cannot adjust the DMRS power ratio of the terminal device through downlink control information (DCI); if the terminal device supports dynamic adjustment of the power ratio, the network device can adjust the DMRS power ratio of the terminal device through DCI.

[0147] In some embodiments, the method of Example 4 may further include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on the DMRS when the configured power ratio satisfies the above dynamic power information.

[0148] In some implementations, if the terminal device does not support dynamic adjustment of the power ratio, the network device cannot adjust the terminal device's DMRS power ratio via DCI; in this case, only the quasi-statically configured DMRS power ratio can be used. That is, the terminal device does not expect the received DCI signaling to include signaling for adjusting the DMRS power ratio. Otherwise, the terminal device can choose not to process the corresponding signaling and continue using the original power ratio; or, the terminal device can choose not to detect the PDSCH carrying the overlay transmission. If the terminal device supports dynamic adjustment of the power ratio, the network device can adjust the terminal device's DMRS power ratio via DCI to achieve better detection performance.

[0149] The method in Example 4 can ensure that the power ratio configured for the network device does not exceed the switching capability of the terminal device, thereby preventing data detection; at the same time, for terminal devices that support dynamic adjustment, better performance can be obtained by dynamically adjusting the power ratio.

[0150] Example 5: The first capability information includes maximum rank information and / or dynamic rank information.

[0151] In Embodiment 5, the terminal device reports first capability information to the network device, the first capability information including maximum rank information and / or dynamic rank information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including maximum rank information and / or dynamic rank information.

[0152] Maximum rank information can be used to indicate the maximum number of transmission layers supported by a terminal device in the case of DMRS and data overlay transmission.

[0153] Dynamic rank information can be used to indicate whether a terminal device supports dynamic adjustment of the number of transmission layers in the case of DMRS and data overlay transmission.

[0154] In some embodiments, DMRS and data overlay transmission introduce significant interference, and transmission between different transport layers is also overlay. Therefore, as the number of transport layers (i.e., rank) increases, the difficulty for terminal devices to correctly detect data also increases significantly. At this point, the maximum number of transport layers supported by the receiver algorithms of different terminal devices may not be the same. For example, some advanced receivers can support a maximum number of transport layers similar to orthogonal transmission, but many terminal devices can only support a smaller number of transport layers. Therefore, this information needs to be reported to the network device.

[0155] In some embodiments, the maximum rank information can indicate any one of the values ​​from 1 to 8.

[0156] In some embodiments, for overlay transmission and orthogonal transmission, the terminal device can independently (respectively) report the maximum number of transmission layers it supports.

[0157] In some embodiments, the number of transmission layers supported during overlay transmission may be less than that supported during orthogonal transmission. For example, the terminal device may report that the maximum supported rank is 4 during overlay transmission and the maximum supported rank is 8 during orthogonal transmission.

[0158] In some embodiments, if the terminal device uses an AI-based receiver, different transmission layers may correspond to different AI models for one terminal device; while for another terminal device, the same AI model may be used to support different transmission layers. Since model switching takes time, the former type of terminal device may not be able to support dynamic adjustment of different transmission layers, while the latter type can support dynamic adjustment of different transmission layers (i.e., Rank adaptation). Therefore, the ability to support dynamic adjustment of transmission layers needs to be reported to the network device as a terminal capability, so that the network device can determine whether it can dynamically adjust the transmission layers of the terminal device to achieve higher spectral efficiency.

[0159] In some embodiments, the method of Example 5 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on the maximum rank information and / or dynamic rank information.

[0160] In some implementations, when scheduling the overlay transmission of DMRS and data, the number of transmission layers configured by the network device cannot exceed the maximum number of transmission layers indicated by the aforementioned maximum rank information. If the current channel quality is good and the network device needs to schedule a larger rank to achieve a higher peak rate, it can choose not to schedule the terminal device for overlay transmission, but instead use orthogonal transmission of DMRS and data.

[0161] In some embodiments, if the first capability information includes dynamic rank information, the network device can configure the number of transport layers according to whether the terminal device supports dynamic adjustment of the number of transport layers. For example, if the terminal device supports dynamic adjustment of the number of transport layers, the network device can adjust the number of transport layers (e.g., by adjusting the number of transport layers via DCI); otherwise, the network device cannot adjust the number of transport layers, but in this case, it can schedule quasi-static (configured grant) overlay transmission.

[0162] In some embodiments, the method of Example 5 may further include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on the DMRS when the configured transmission layer number satisfies the maximum rank information.

[0163] Specifically, the configured number of transmission layers satisfies the maximum rank information, meaning the number of transmission layers configured in the scheduling information cannot exceed the maximum number of transmission layers indicated by the maximum rank information. In this case, the terminal device can detect data overlaid with DMRS and report feedback information (such as HARQ-ACK). In other words, when the terminal device is scheduled for overlay transmission, the number of transmission layers configured in the scheduling information cannot exceed the maximum number of transmission layers indicated by the maximum rank information. Otherwise, the terminal device may not report the corresponding PDSCH feedback information (such as HARQ-ACK), or the terminal device may not detect the PDSCH carrying the overlay transmission.

[0164] The method in Example 5 can ensure that the number of transmission layers configured on the network device does not exceed the maximum number that the terminal device can detect, thereby avoiding the inability to perform data detection.

[0165] Example 6: The first capability information includes maximum MCS information and / or dynamic modulation information.

[0166] In Embodiment 6, the terminal device reports first capability information to the network device, the first capability information including maximum MCS information and / or dynamic modulation information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including maximum MCS information and / or dynamic modulation information.

[0167] Maximum MCS information can be used to indicate the highest modulation scheme and / or highest code rate supported by the terminal device in the case of DMRS and data overlay transmission.

[0168] Dynamic modulation information is used to indicate whether the terminal device supports dynamic adjustment of the modulation scheme in the case of DMRS and data overlay transmission.

[0169] In some embodiments, DMRS and data overlay transmission can introduce significant interference, posing a major challenge to the detection of high-order modulation and high-code-rate data. In this case, the maximum modulation order and code rate supported by the receiver algorithms of different terminal devices often vary. For example, some advanced receivers can support modulation and coding schemes similar to orthogonal transmission, but many terminal devices can only support lower modulation and coding orders. Therefore, this information needs to be reported to the network device.

[0170] In one implementation, the maximum MCS information can indicate the highest modulation scheme that the terminal device can support under DMRS and data overlay transmission conditions. In this case, the maximum MCS information can indicate one of the modulation orders such as quadrature phase shift keying (QPSK), 16-quadrature amplitude modulation (16QAM), 64QAM, 256QAM, 1024QAM, and 4096QAM. In some embodiments, the maximum MCS information can also indicate whether irregular constellation points are supported under DMRS and data overlay transmission conditions.

[0171] In one implementation, the maximum MCS information can indicate the highest bit rate that the terminal device can support under DMRS and data overlay transmission conditions. For example, the maximum MCS information can indicate (or, the highest bit rate can be) one of several agreed-upon bit rates.

[0172] In one implementation, the maximum MCS information can indicate the highest modulation and coding scheme that the terminal device can support in DMRS and data overlay transmission scenarios. For example, the maximum MCS information can indicate the highest supported MCS index in overlay transmission scenarios from a predefined MCS table.

[0173] In some embodiments, for superimposed transmission and orthogonal transmission, the terminal device may independently (respectively) report its respective maximum supported modulation scheme and / or highest bit rate.

[0174] In some embodiments, the modulation and coding order supported during superimposed transmission may be lower than that supported during orthogonal transmission. For example, the terminal device may report that it supports up to 246QAM during superimposed transmission and up to 1024QAM during orthogonal transmission.

[0175] In some embodiments, if the terminal device uses an AI-based receiver, different modulation schemes may correspond to different AI models for one terminal device; while another terminal device may use the same AI model to support different modulation schemes. Since model switching takes time, the former type of terminal device may not be able to support dynamic adjustment of different modulation schemes, while the latter type may. Therefore, the ability to support dynamic modulation scheme adjustment needs to be reported to the network device as a terminal capability, so that the network device can determine whether it can dynamically adjust the modulation scheme of the terminal device to achieve higher spectral efficiency.

[0176] In some embodiments, the method of Example 6 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on the maximum MCS information and / or dynamic modulation information.

[0177] In some implementations, when scheduling the overlay transmission of DMRS and data, the modulation and coding order configured by the network device cannot exceed the maximum modulation scheme and / or maximum code rate indicated by the maximum MCS information. If the current channel quality is good and the network device needs to schedule a higher modulation and coding order to achieve a higher peak rate, it can choose not to schedule the terminal device for overlay transmission, but instead use the existing orthogonal transmission method.

[0178] In one implementation, if the first capability information includes dynamic modulation information, the network device performs corresponding MCS configuration based on whether the terminal device supports dynamic adjustment of the modulation scheme. If the terminal device supports dynamic adjustment of the modulation scheme, the network device can adjust the modulation scheme through DCI; otherwise, the network device cannot adjust the modulation scheme through DCI, but can schedule quasi-static overlay transmission in this case.

[0179] In some embodiments, the method of Example 6 may further include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on the DMRS when the configured modulation and coding scheme satisfies the maximum MCS information.

[0180] Specifically, when a terminal device is scheduled for overlay transmission, the modulation and coding order configured in the scheduling information cannot exceed the maximum modulation scheme and / or maximum code rate indicated by the maximum MCS information. In this case, the terminal device can detect data overlaid with DMRS and report feedback information (such as HARQ-ACK information). In other words, the terminal device does not expect the configured modulation and coding order to be higher than the maximum modulation scheme and / or maximum code rate indicated by the maximum MCS information. Otherwise, the terminal device may not report the corresponding PDSCH feedback information, or it may not detect the PDSCH carrying the overlay transmission.

[0181] The method in Example 6 can ensure that the modulation and coding order configured on the network device does not exceed the modulation and coding order that the terminal device can detect, thereby avoiding the inability to perform data detection.

[0182] Example 7: The first capability information includes transport block size information.

[0183] In embodiment 7, the terminal device reports first capability information to the network device, the first capability information including transport block size information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including transport block size information.

[0184] Transport block size information can be used to indicate the maximum and / or minimum transport block size supported by the terminal device in the case of DMRS and data overlay transmission.

[0185] In some embodiments, DMRS and data overlay transmission can introduce significant interference, limiting the supported transport block size. In this case, the transport block sizes supported by the receiver algorithms of different terminal devices often vary. For example, some advanced receivers can support transport block sizes similar to orthogonal transmission, but many terminal devices can only support a certain range of transport block sizes, so this information needs to be reported to the network device. In some embodiments, if traditional DMRS and data orthogonal transmission is used, transport blocks of any size can be detected, therefore this terminal capability is not required.

[0186] In some embodiments, the method of Example 7 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on the transport block size information.

[0187] In some implementations, when scheduling the overlay transmission of DMRS and data, the network device may configure a transport block size that is not higher than the maximum transport block size indicated by the transport block size information, and / or lower than the minimum transport block size indicated by the transport block size information.

[0188] In some embodiments, the method of Example 7 may further include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on the DMRS when the configured transport block size meets the transport block size information.

[0189] Specifically, the configured transport block size satisfies the requirement that the transport block size configured in the scheduling information cannot exceed the maximum transport block size indicated by the transport block size information, and / or be lower than the minimum transport block size indicated by the transport block size information. In this case, the terminal device can detect data overlaid with DMRS and report feedback information. In other words, when the terminal device is scheduled for overlay transmission, the transport block size configured in the scheduling information cannot exceed the maximum transport block size indicated by the transport block size information, and / or be lower than the minimum transport block size indicated by the transport block size information. Otherwise, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission.

[0190] The method in Example 7 can ensure that the transport block size configured by the network device does not exceed the transport block size that the terminal device can detect, thereby avoiding the inability to perform data detection.

[0191] Example 8: The first capability information includes DMRS pattern information and / or dynamic DMRS pattern information.

[0192] In embodiment 8, the terminal device reports first capability information to the network device, the first capability information including DMRS pattern information and / or dynamic DMRS pattern information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including DMRS pattern information and / or dynamic DMRS pattern information.

[0193] DMRS pattern information can be used to indicate the DMRS patterns supported by the terminal device in the case of DMRS and data overlay transmission.

[0194] Dynamic DMRS pattern information can be used to indicate whether a terminal device supports dynamic adjustment of the DMRS pattern when DMRS and data are overlaid and transmitted.

[0195] In some embodiments, if the terminal device uses an AI-based receiver, different DMRS patterns may correspond to different AI models for a single terminal device, and the number of DMRS patterns that the terminal device can support is limited. For another terminal device, the same AI model may be used to support different DMRS patterns, thus enabling the terminal device to support a wide variety of DMRS patterns.

[0196] In one implementation, the DMRS pattern can include two types: complete overlay of DMRS and data (i.e., all data REs are overlaid with DMRS), and partial overlay of DMRS and data (i.e., only some data REs are overlaid with DMRS). For the case of partial overlay of DMRS and data, different DMRS patterns can be further distinguished based on the number of REs overlaid with DMRS. For example, different patterns may use different OFDM symbols for DMRS and data overlay transmission, or different subcarriers.

[0197] In some embodiments, for DMRS and orthogonal data transmission, the DMRS patterns supported by the terminal device also need to be reported, such as Type 1 and Type 2 DMRS. In this case, the DMRS patterns supported by overlay transmission and orthogonal transmission can be reported separately (independently).

[0198] In some embodiments, if the terminal device uses an AI-based receiver, different DMRS patterns may correspond to different AI models for one terminal device. Conversely, another terminal device may use the same AI model to support different DMRS patterns. Since model switching takes time, the former type of terminal device may not be able to support dynamic adjustment of different DMRS patterns, while the latter type may. Therefore, the ability to support dynamic adjustment of DMRS patterns needs to be reported to the network device as a terminal capability, so that the network device can determine whether it can dynamically adjust the DMRS pattern of the terminal device to achieve higher spectral efficiency.

[0199] In some embodiments, the method of Example 8 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on DMRS pattern information and / or dynamic DMRS pattern information.

[0200] In some implementations, when scheduling the overlay transmission of DMRS and data, the DMRS pattern configured by the network device must be included in the DMRS pattern indicated by the DMRS pattern information. Otherwise, the network device needs to schedule the orthogonal transmission of DMRS and data.

[0201] In one implementation, the first capability information includes dynamic DMRS pattern information, allowing the network device to perform corresponding DMRS configuration based on whether the terminal device supports dynamic adjustment of the DMRS pattern. For example, if the terminal device supports dynamic adjustment of the DMRS pattern, the network device can adjust the DMRS pattern through DCI; otherwise, the network device cannot adjust the DMRS pattern through DCI, but can schedule quasi-static overlay transmission in this case.

[0202] In some embodiments, the method of Example 8 may further include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on the DMRS when the configured DMRS pattern satisfies the DMRS pattern information.

[0203] Specifically, when a terminal device is scheduled for overlay transmission, the configured DMRS pattern must be included within the DMRS pattern indicated by the scheduling information. In this case, the terminal device can detect data overlaid with DMRS and report feedback information. In other words, the terminal device does not want to be overlaid with DMRS patterns other than those indicated by the configured DMRS pattern information. Otherwise, the terminal device may not report the corresponding PDSCH feedback information, or it may not detect the PDSCH carrying the overlay transmission.

[0204] The method in Example 8 can ensure that the AI ​​model on the receiving side corresponding to the DMRS pattern configured by the network device is the AI ​​model already deployed by the terminal device, thereby avoiding the inability to perform data detection.

[0205] Example 9: The first capability information includes multi-user multiplexing information and / or multi-user handover information.

[0206] In Embodiment 9, the terminal device reports first capability information to the network device, the first capability information including multi-user multiplexing information and / or multi-user handover information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including multi-user multiplexing information and / or multi-user handover information.

[0207] Multi-user multiplexing information can be used to indicate whether a terminal device supports resource multiplexing with other terminal devices in the case of DMRS and data overlay transmission, and / or, multi-user multiplexing information can be used to indicate the maximum number of multiplexing layers supported by a terminal device in the case of DMRS and data overlay transmission.

[0208] Multi-user handover information can be used to indicate whether a terminal device supports dynamic handover between multi-user multiplexing and single-user transmission in the case of DMRS and data overlay transmission.

[0209] In some embodiments, the overlay transmission of DMRS and data can introduce significant interference. However, since the DMRS and resource locations are known, interference can be suppressed and the data detected at the receiving end using technologies such as AI receivers. However, if the terminal device reuses the same resources with other users, the information about the interfering users is unknown to both the receiving end and the AI ​​receiver. The data is simultaneously overlaid with interference from DMRS and other users, making it difficult for the AI ​​receiver to handle this situation. Some advanced receivers may support multi-user multiplexing in overlay transmission scenarios, while others may not. Therefore, information regarding whether multi-user multiplexing is supported needs to be reported to the network equipment. Furthermore, even for terminal devices that support multi-user multiplexing, the maximum number of multiplexing layers that can be supported varies.

[0210] For example, the first terminal device does not support resource reuse with other users when overlay transmission is not supported; the second terminal device supports resource reuse with other users when overlay transmission is supported, and the maximum number of reuse layers supported is 4; the third terminal device supports resource reuse with other users when overlay transmission is supported, and the maximum number of reuse layers supported is 8.

[0211] In some embodiments, for both DMRS and orthogonal data transmission, the terminal device can support resource reuse with other users, so there is no need to report this capability.

[0212] In some embodiments, because multi-user multiplexing requires processing more complex interference information, different AI models may be used for multi-user multiplexing and single-user transmission at the receiving end. For some users, the same AI model may be used for both multi-user multiplexing and single-user transmission. Since model switching takes time, the former type of terminal device may not be able to support dynamic adjustment between multi-user multiplexing and single-user transmission, while the latter type may be able to support such dynamic adjustment. Therefore, the ability to support dynamic adjustment between multi-user multiplexing and single-user transmission needs to be reported to the network device as a terminal capability, so that the network device can determine whether it can dynamically adjust the transmission mode of the terminal device to improve spectrum efficiency.

[0213] In some embodiments, the method of Example 9 further includes: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on multi-user multiplexing information and / or multi-user handover information.

[0214] In some implementations, when scheduling the overlay transmission of DMRS and data, if the multi-user multiplexing information indicates support for resource multiplexing with other users, the network device can schedule the terminal device to perform multi-user multiplexing with other users. For example, the network device can indicate whether multi-user multiplexing has been performed in the DCI, so that the terminal device can adopt the corresponding receiving method; otherwise, the network device can only schedule the terminal device to perform single-user transmission (SU-MIMO).

[0215] In one implementation, if the first capability information includes multi-user handover information, the network device can perform corresponding downlink user scheduling based on whether the terminal device supports dynamic handover between multi-user multiplexing and single-user transmission. If the terminal device supports dynamic handover, the network device can schedule dynamic handover between multi-user multiplexing and single-user transmission, and can further indicate in the DCI whether multi-user multiplexing has been performed, so that the terminal device can adopt the corresponding receiving method. Otherwise, the network device cannot schedule the terminal device to perform dynamic handover between multi-user multiplexing and single-user transmission.

[0216] In some embodiments, the method of Example 9 may further include: the terminal device receiving scheduling information from the network device and detecting data transmitted overlaid with DMRS.

[0217] In some embodiments, if the multi-user multiplexing information indicates that resource multiplexing with other users is not supported, but the network device schedules multi-user multiplexing (without indicating otherwise), the terminal device cannot know whether other terminal devices exist, making it difficult to correctly detect data. In other words, the terminal device does not expect multi-user multiplexing with other users. If the network device indicates multi-user multiplexing in the DCI at this time, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission.

[0218] In some embodiments, if the multi-user multiplexing information indicates that resource multiplexing with other users is supported, the network device can indicate in the DCI that multi-user multiplexing has been performed, and the terminal device will report the corresponding feedback information.

[0219] In some embodiments, if the first capability information includes multi-user handover information and the terminal device reports that it does not support dynamic handover, then if the network device indicates in the DCI that dynamic handover between multi-user multiplexing and single-user transmission is required, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission. That is, the terminal device does not expect to be scheduled for dynamic handover between multi-user multiplexing and single-user transmission. However, if the terminal device reports that dynamic handover is supported, the network device can indicate dynamic handover between multi-user multiplexing and single-user transmission in the DCI. In this case, the terminal device can detect the data overlay transmitted with DMRS and report the feedback information.

[0220] The method in Example 9 can ensure that the multi-user multiplexing scheme configured by the network device does not exceed the receiving capacity of the terminal device, thereby avoiding the inability to perform data detection.

[0221] Example 10: The first capability information includes multiple TRP transmission information and / or TRP handover information.

[0222] In Embodiment 10, the terminal device reports first capability information to the network device. The first capability information includes multiple TRP transmission information and / or TRP handover information. Correspondingly, the network device receives the first capability information reported by the terminal device, which includes multiple TRP transmission information and / or TRP handover information.

[0223] Multiple TRP transmission information can be used to indicate whether a terminal device supports multiple TRP transmission schemes in the case of DMRS and data overlay transmission, and / or, multiple TRP transmission information can be used to indicate the multiple TRP transmission schemes supported by the terminal device in the case of DMRS and data overlay transmission.

[0224] TRP switching information can be used to indicate whether a terminal device supports dynamic switching between multi-TRP transmission schemes and single-TRP transmission schemes when DMRS and data overlay transmission are used.

[0225] In some embodiments, DMRS and data overlay transmission can introduce significant interference, which may prevent some terminal devices from simultaneously receiving downlink transmissions from multiple TRPs, such as in non-coherent joint transmission (NC-JT). However, some advanced terminal devices can support both overlay transmission and multi-TRP transmission simultaneously, thus requiring reporting through terminal capabilities.

[0226] In one implementation, the multi-TRP transmission information can indicate whether the terminal device supports the multi-TRP transmission scheme under DMRS and data overlay transmission conditions. For example, the terminal device can indicate whether it supports the multi-TRP transmission scheme using 1 bit of information. The multi-TRP transmission scheme here can be a multi-TRP transmission scheme pre-agreed upon by the network device and the terminal device, such as at least one of the following transmission schemes: NC-JT, Coherent Joint Transmission (CJT), Dynamic Point Switching (DPS), Single Frequency Network (SFN) diversity transmission, multi-TRP repeated transmission, etc.

[0227] In another implementation, the multi-TRP transmission information can indicate the multi-TRP transmission schemes that the terminal device can support under DMRS and data overlay transmission. That is, the terminal device indicates from a variety of multi-TRP transmission schemes which it can simultaneously support during overlay transmission. These multi-TRP transmission schemes can be the following: NC-JT, CJT, DPS, SFN, multi-TRP repeated transmission, etc. As one implementation, the terminal device can indicate the currently supported transmission schemes using a bitmap, with each bit corresponding to one transmission scheme; if the indication is all 0s, it indicates that multi-TRP transmission schemes are not supported.

[0228] In some embodiments, for DMRS and orthogonal data transmission, the terminal device also needs to report whether it supports a multi-TRP transmission scheme. In some embodiments, whether a multi-TRP transmission scheme is supported during orthogonal transmission and whether it is supported during overlay transmission need to be indicated separately. For example, the terminal device may indicate that a multi-TRP transmission scheme is not supported during overlay transmission, but is supported during orthogonal transmission.

[0229] In some embodiments, because multi-TRP transmission needs to handle more complex multiplexing scenarios, different AI models may be used for multi-TRP transmission and single-TRP transmission for some terminal devices. For other terminal devices, the same AI model may be used for multi-TRP transmission and single-TRP transmission. Since model switching takes time, the former type of terminal device may not be able to support dynamic adjustment between multi-TRP transmission and single-TRP transmission, while the latter type of terminal device can support dynamic adjustment between multi-TRP transmission and single-TRP transmission. Therefore, the ability to support dynamic adjustment between multi-TRP transmission and single-TRP transmission needs to be reported to the network device as a terminal capability, so that the network device can determine whether switching between multi-TRP transmission and single-TRP transmission can be performed during superimposed transmission to improve spectrum efficiency.

[0230] In one implementation, in a multi-TRP transmission scheme, the terminal device needs to be configured with two TCI states. For example, the terminal device needs to be configured with two unified TCI states. Another example is that the terminal device needs to be configured with two pairs of TCI states (one pair of TCI states includes an uplink TCI state and a downlink TCI state).

[0231] In one implementation, in a single TRP transmission scheme, the terminal device is configured with only one TCI state. For example, the terminal device is configured with a single unified TCI state. Another example is that the terminal device is configured with a pair of TCI states.

[0232] In some embodiments, the method of Example 10 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on the multi-TRP transmission information and / or TRP switching information.

[0233] In some implementations, when scheduling the overlay transmission of DMRS and data, if the multi-TRP transmission information indicates that a multi-TRP transmission scheme is supported, the network device can schedule the terminal device to perform multi-TRP transmission; otherwise, the network device can only schedule the terminal device to perform single-TRP transmission.

[0234] In one implementation, if the first capability information includes TRP switching information, the network device can perform corresponding downlink user scheduling based on whether the terminal device supports dynamic switching between a multi-TRP transmission scheme and a single-TRP transmission scheme. If the terminal device supports dynamic switching, the network device can schedule dynamic switching between the multi-TRP transmission scheme and the single-TRP transmission scheme, and can further indicate in the DCI whether multi-TRP transmission has been scheduled, so that the terminal device can adopt the corresponding receiving method. Otherwise, the network device cannot schedule the terminal device to perform dynamic switching between the multi-TRP transmission scheme and the single-TRP transmission scheme.

[0235] In some embodiments, the method of Example 10 may further include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on the DMRS transmission when the scheduled multi-TRP transmission scheme satisfies the multi-TRP transmission information.

[0236] In some implementations, if the multi-TRP transmission information indicates that the multi-TRP transmission scheme is not supported, the terminal device does not expect to be simultaneously scheduled for overlay transmission and the multi-TRP transmission scheme. If the network device simultaneously schedules overlay transmission and the multi-TRP transmission scheme, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission. If the multi-TRP transmission information indicates that the multi-TRP transmission scheme is supported, the terminal device can be simultaneously scheduled for overlay transmission and the multi-TRP transmission scheme, and can detect the data overlay transmission with DMRS.

[0237] In some implementations, if the first capability information includes TRP switching information and the terminal device reports that it does not support dynamic switching, then the terminal device does not expect dynamic switching between the scheduled multi-TRP transmission scheme and the single-TRP transmission scheme. For example, the terminal does not expect the DCI to dynamically indicate a single TCI state and multiple TCI states. If the network device indicates dynamic switching between the multi-TRP transmission scheme and the single-TRP transmission scheme in the DCI (e.g., the DCI can dynamically indicate a single TCI state and multiple TCI states), the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission. However, if the terminal device reports that it supports dynamic switching, then if the network device can indicate dynamic switching between the multi-TRP transmission scheme and the single-TRP transmission scheme in the DCI (e.g., the DCI can dynamically indicate a single TCI state and multiple TCI states), the terminal device can detect the data overlay transmitted with DMRS and report the feedback information.

[0238] The method in Example 10 can ensure that the multi-TRP transmission scheme configured by the network device does not exceed the receiving capacity of the terminal device, thereby avoiding the inability to perform data detection.

[0239] Example 11: The first capability information includes MCS table information

[0240] In embodiment 11, the terminal device reports first capability information to the network device, the first capability information including MCS table information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including MCS table information.

[0241] MCS table information can be used to indicate the MCS tables supported by the terminal device in the case of DMRS and data overlay transmission.

[0242] In some embodiments, different MCS tables contain different modulation schemes and / or bit rates.

[0243] In some embodiments, because DMRS and data overlay transmission introduce greater interference, higher receiver complexity is required to support certain services, such as ultra-reliable low latency communication (URLLC). Different services typically use different MCS tables; therefore, the terminal device needs to report the MCS tables it can support during overlay transmission, such as whether it can support the MCS tables corresponding to URLLC.

[0244] In some embodiments, the MCS table is pre-agreed upon by the network device and the terminal device, and different MCS tables contain different modulation schemes and code rates. That is, in different MCS tables, at least one of the modulation scheme and code rate corresponding to the same MCS index value is different.

[0245] For example, the first MCS table supports a maximum of 256 QAM, the second MCS table supports a maximum of 1024 QAM, while the third MCS table only supports a maximum of 64 QAM.

[0246] For example, the first MCS table supports BPSK, while the second MCS table does not.

[0247] For example, the first MCS table supports lower modulation schemes and bit rates to support URLLC, while the second MCS table supports higher modulation schemes and bit rates to support enhanced mobile broadband (eMBB) services.

[0248] In some embodiments, the method of Example 11 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission according to the MCS table information.

[0249] In some implementations, when scheduling the overlay transmission of DMRS and data, the MCS table used by the network device must be included in the MCS table indicated by the MCS table information. Otherwise, the network device needs to schedule the orthogonal transmission of DMRS and data.

[0250] In some embodiments, the method of Example 11 may further include: the terminal device receiving scheduling information from the network device, and detecting data overlaid with DMRS when the MCS table used satisfies the MCS table information.

[0251] In some implementations, when a terminal device is scheduled for overlay transmission, the MCS table configured in the scheduling information must be included in the MCS table indicated by the MCS table information. That is, the terminal device does not want to be configured with an MCS table other than the one indicated by the MCS table information. Otherwise, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission. If the used MCS table satisfies the MCS table information, it means that the MCS table configured in the scheduling information is included in the MCS table indicated by the MCS table information. In this case, the terminal device can detect the data overlay transmitted with DMRS and report the feedback information.

[0252] The method in Example 11 can ensure that the MCS table configured by the network device is an MCS table that the overlay transmission receiver of the terminal device can support, thereby avoiding the inability to perform data detection.

[0253] Example 12: The first capability information includes receiver handover information.

[0254] In embodiment 12, the terminal device reports first capability information to the network device, the first capability information including receiver handover information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including receiver handover information.

[0255] Receiver switching information can be used to indicate whether the terminal device supports dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission.

[0256] In some embodiments, for terminal devices, overlay transmission and orthogonal transmission require the use of different receivers. For example, overlay transmission uses an AI-based receiver, while orthogonal transmission uses a traditional receiver. In this case, if the network device is configured to dynamically switch between overlay and orthogonal transmission, some terminal devices may not be able to quickly switch between different receivers. Therefore, terminal devices need to report their ability to dynamically switch between overlay and orthogonal transmission. As one implementation, the terminal device can indicate this capability using 1 bit of information.

[0257] In some embodiments, the method of Example 12 may further include: the network device scheduling the terminal device to perform downlink data transmission based on receiver switching information.

[0258] In some embodiments, if the receiver switching information indicates support for dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission, the network device can schedule the terminal device to perform dynamic switching between overlay transmission and orthogonal transmission. For example, the DCI may indicate whether overlay transmission or orthogonal transmission is currently being used, allowing the terminal device to employ the appropriate receiver. Otherwise, the network device cannot schedule the terminal device to perform dynamic switching between overlay transmission and orthogonal transmission; that is, it cannot perform switching between overlay transmission and orthogonal transmission via DCI signaling.

[0259] In some embodiments, the method of embodiment 12 may further include: the terminal device receiving scheduling information from the network device, and detecting the PDSCH sent by the network device when the scheduled transmission scheme satisfies the receiver switching information.

[0260] In some embodiments, if the receiver handover information indicates that the terminal device does not support dynamic switching between overlay transmission and orthogonal transmission, the terminal device does not expect the network device to perform the switching between overlay transmission and orthogonal transmission via DCI signaling. In this case, if the network device schedules dynamic switching between overlay transmission and orthogonal transmission, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the corresponding PDSCH. If the receiver handover information indicates that the terminal device supports dynamic switching between overlay transmission and orthogonal transmission, the terminal device can be scheduled for dynamic switching between overlay transmission and orthogonal transmission, for example, by receiving the current transmission scheme (overlay transmission or orthogonal transmission) indicated by the network device via DCI signaling, so that the terminal device can use the corresponding receiver detection and report the feedback information.

[0261] The method in Example 12 can ensure that the DMRS transmission scheme configured by the network device does not exceed the receiving capability of the terminal device, thereby avoiding the inability to perform data detection.

[0262] Example 13: The first capability information includes multi-carrier information.

[0263] In embodiment 13, the terminal device reports first capability information to the network device, the first capability information including multi-carrier information. Correspondingly, the network device receives the first capability information reported by the terminal device, the first capability information including multi-carrier information.

[0264] Multicarrier information can be used to indicate whether a terminal device supports DMRS and data overlay transmission on multiple carriers, and / or, multicarrier information can be used to indicate the maximum number of carriers that a terminal device supports for DMRS and data overlay transmission.

[0265] In some embodiments, since DMRS and data overlay transmission require more advanced receivers for interference suppression, additional receiver complexity is required if the terminal device simultaneously detects overlay transmissions on multiple carriers. Therefore, some terminal devices may not support this capability and need to report the corresponding capability to the network device.

[0266] In one implementation, multi-carrier information can indicate whether the terminal device supports DMRS and data overlay transmission on multiple carriers. For example, multi-carrier information can use a single bit to indicate whether carrier aggregation and overlay transmission are supported simultaneously.

[0267] In another implementation, the multi-carrier information can indicate the maximum number of carriers supporting DMRS and data overlay transmission. Due to the limited processing power of the terminal, the multi-carrier information can indicate the maximum number of carriers that the terminal device can support for overlay transmission; for example, the multi-carrier information can indicate that the maximum number of carriers supporting overlay transmission can be {1, 2, 4, 8}.

[0268] In some embodiments, the method of embodiment 13 may include: the network device scheduling the terminal device to perform DMRS and data overlay transmission based on multi-carrier information.

[0269] In some embodiments, when scheduling the overlay transmission of DMRS and data, the network device configures the number of carriers for the overlay transmission of DMRS and data to not exceed the capacity indicated by the multi-carrier information.

[0270] For example, if the multi-carrier information indicator does not support the overlay transmission of DMRS and data on multiple carriers, the network device can only schedule the overlay transmission of DMRS and data on a single carrier; if the multi-carrier information indicator supports the overlay transmission of DMRS and data on multiple carriers, the network device can schedule the overlay transmission of DMRS and data on multiple carriers simultaneously.

[0271] For example, when multi-carrier information indicates the maximum number of carriers supporting DMRS and data overlay transmission, the number of carriers that the network device simultaneously schedules for overlay transmission cannot exceed the maximum number of carriers indicated by the multi-carrier information. If the network device needs to schedule more carriers, it needs to schedule DMRS and data orthogonal transmission.

[0272] In some embodiments, the method of embodiment 13 may include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on DMRS when the scheduled carrier satisfies multi-carrier information.

[0273] In some embodiments, when the terminal device is scheduled to overlay DMRS and data transmissions, it is not desirable to configure the number of carriers for overlay DMRS and data transmissions to exceed the capacity indicated by the multicarrier information.

[0274] For example, if the multi-carrier information indicates that DMRS and data overlay transmission is not supported on multiple carriers, the terminal device only expects to be scheduled for DMRS and data overlay transmission on a single carrier. If the network device schedules DMRS and data overlay transmission on multiple carriers simultaneously, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission. If the multi-carrier information indicates that DMRS and data overlay transmission is supported on multiple carriers, then DMRS and data overlay transmission can be scheduled simultaneously on multiple carriers.

[0275] For example, when multi-carrier information indicates the maximum number of carriers supporting DMRS and data overlay transmission, the terminal device does not expect the number of carriers simultaneously scheduled for overlay transmission to exceed the maximum number of carriers indicated by the multi-carrier information. Otherwise, the terminal device may not report the corresponding PDSCH feedback information, or the terminal device may not detect the PDSCH carrying the overlay transmission. If the number of carriers simultaneously scheduled for overlay transmission does not exceed the maximum number of carriers indicated by the multi-carrier information, the terminal device can detect the data overlay transmission with DMRS and report the feedback information.

[0276] The method in Example 13 can ensure that the number of carriers configured for superimposed transmission in the network device does not exceed the processing capacity of the terminal device, thereby avoiding the inability to perform data detection.

[0277] Example 14: First capability information jointly indicates multiple capabilities

[0278] In Embodiment 14, the terminal device reports first capability information to the network device. This first capability information indicates multiple capabilities. In some embodiments, the first capability information can indicate multiple capabilities through capability levels. For example, the first capability information can be used to indicate a capability level supported by the terminal device from multiple capability levels. The following description uses the example of the first capability information indicating a capability level.

[0279] In some embodiments, each capability level includes a combination of multiple capability information, which respectively indicate the different transmission configurations and / or transmission schemes that the terminal device can support under DMRS and data overlay transmission conditions.

[0280] The indication content, candidate values, and corresponding usage methods of each of the multiple capability information can be found in the description of the preceding embodiments.

[0281] In one implementation, each capability level may include a value for maximum rank information and a value for maximum MCS information. Different capability levels correspond to different combinations of values, so that the terminal device can indicate the maximum supported capability combination by reporting the capability level. For example, the terminal device can indicate its capabilities (2 bits of information) through the following capability levels: Capability Level 1: Maximum rank = 1, maximum modulation scheme 1024QAM; Capability Level 2: Maximum rank = 2, maximum modulation scheme 1024QAM; Capability Level 3: Maximum rank = 4, maximum modulation scheme 256QAM; Capability Level 4: Maximum rank = 4, maximum modulation scheme 1024QAM.

[0282] In another implementation, each capability level includes a combination of at least two capability information from the various capability information described in Embodiments 1 to 13 (that is, Embodiments 1 to 13 can be used in any combination). For example, each capability information may include a combination of {minimum resource information, maximum rank information, maximum MCS information}. Another example is that each capability information may include a combination of {PDSCH processing time, multi-user multiplexing information, multi-TRP transmission information}. Yet another example is that each capability information may include a combination of {maximum rank information, maximum MCS information, multi-TRP transmission information}. And yet another example is that each capability information may include a combination of {maximum rank information, maximum MCS information, multi-user multiplexing information}. Taking the last one as an example, the different capability levels can be represented as follows: Capability Level 1: Maximum rank = 2, maximum modulation mode 1024QAM, single-user transmission only; Capability Level 2: Maximum rank = 4, maximum modulation mode 256QAM, single-user transmission only; Capability Level 3: Maximum rank = 4, maximum modulation mode 1024QAM, single-user transmission only; Capability Level 4: Maximum rank = 1, maximum modulation mode 256QAM, single / multi-user transmission; Capability Level 5: Maximum rank = 1, maximum modulation mode 1024QAM, single / multi-user transmission; Capability Level 6: Maximum rank = 2, maximum modulation mode 256QAM, single / multi-user transmission.

[0283] In some embodiments, the method of embodiment 14 may further include: the network device scheduling the terminal device to perform DMRS and data overlay transmission according to the capability level indicated by the first capability information.

[0284] In some embodiments, for each capability information contained in the capability level, the transmission configuration and / or transmission scheme indicated by the network device when scheduling the overlay transmission of DMRS and data cannot exceed the maximum capability indicated by each capability information. That is, the network device must ensure that the transmission parameters / schemes of the scheduled overlay transmission satisfy each capability information contained in the capability level reported by the terminal device. If this cannot be satisfied, the network device may schedule orthogonal transmission of DMRS and data.

[0285] In some embodiments, the method of embodiment 14 may further include: the terminal device receiving scheduling information from the network device, and detecting data superimposed on the DMRS when the scheduled superimposed transmission satisfies the capability level indicated by the first capability information.

[0286] In some embodiments, when a terminal device is scheduled for overlay transmission of DMRS and data, the indicated transmission configuration and / or transmission scheme meets the capability level indicated by the first capability information, i.e., it cannot exceed the maximum capability indicated by each capability information. In this case, the terminal device can detect the data overlay transmission with DMRS and report feedback information. That is, the terminal device does not expect the configured transmission configuration and / or transmission scheme to exceed the maximum capability indicated by each capability information of the capability level. Otherwise, the terminal device may not report feedback information for the corresponding PDSCH, or the terminal device may not detect the PDSCH carrying the overlay transmission.

[0287] The method in Example 14 can ensure that the transmission parameters configured for superimposed transmission in the network device do not exceed the processing capacity of the terminal device, thereby avoiding the inability to perform data detection.

[0288] The method embodiments of this application have been described in detail above with reference to Figures 1 to 4. The apparatus embodiments of this application will be described in detail below with reference to Figures 5 to 7. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0289] Figure 5 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. The terminal device 500 shown in Figure 5 includes a first reporting module 510. The first reporting module 510 can be used to report first capability information to a network device, the first capability information being used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission.

[0290] In some embodiments, the first capability information includes PDSCH processing time information, which is used to indicate the time required for the terminal device to detect the first PDSCH, wherein the first PDSCH carries overlaid DMRS and data.

[0291] In some embodiments, the terminal device further includes: a determining module 520, configured to determine, based on the time required to detect the first PDSCH, the minimum time interval between the end time of transmission of the first PDSCH and the start time of transmission of the uplink channel carrying the feedback information of the first PDSCH; and a second reporting module 530, configured to report the feedback information to the network device when the first time interval is greater than or equal to the minimum time interval, wherein the first time interval is the time interval between the end time of transmission of the first PDSCH and the start time of transmission of the uplink channel carrying the feedback information of the first PDSCH.

[0292] In some embodiments, the first capability information includes minimum resource information, which is used to indicate the minimum number of resources required for the terminal device to support DMRS and data overlay transmission, or the minimum resource information is used to indicate the minimum number of resources required for the terminal device to detect data overlay transmission with DMRS.

[0293] In some embodiments, the minimum resource quantity includes a minimum PRB quantity or a minimum RE quantity.

[0294] In some embodiments, the first capability information includes PRB bundling information, which indicates the size of the PRB bundles supported by the terminal device in the case of DMRS and data overlay transmission, or the PRB bundling information indicates the precoding granularity supported by the terminal device in the case of DMRS and data overlay transmission.

[0295] In some embodiments, the first capability information includes dynamic power information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS power ratio and / or data power ratio, wherein the DMRS power ratio is the power ratio of DMRS and data overlay transmission on physical resources, and the data power ratio is the power ratio of data and data overlay transmission on physical resources.

[0296] In some embodiments, the first capability information includes maximum rank information, which is used to indicate the maximum number of transport layers supported by the terminal device in the case of DMRS and data overlay transmission.

[0297] In some embodiments, the first capability information includes dynamic rank information, which is used to indicate whether the terminal device supports dynamic adjustment of the number of transmission layers in the case of DMRS and data overlay transmission.

[0298] In some embodiments, the first capability information includes maximum MCS information, which is used to indicate the highest modulation scheme and / or highest code rate supported by the terminal device in the case of DMRS and data overlay transmission.

[0299] In some embodiments, the first capability information includes dynamic modulation information, which is used to indicate whether the terminal device supports dynamic adjustment of the modulation method in the case of DMRS and data superposition transmission.

[0300] In some embodiments, the first capability information includes transport block size information, which is used to indicate the maximum and / or minimum transport block size supported by the terminal device in the case of DMRS and data overlay transmission.

[0301] In some embodiments, the first capability information includes DMRS pattern information, which is used to indicate the DMRS pattern supported by the terminal device in the case of DMRS and data overlay transmission.

[0302] In some embodiments, the first capability information includes dynamic DMRS pattern information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS pattern in the case of DMRS and data overlay transmission.

[0303] In some embodiments, the first capability information includes multi-user multiplexing information, which is used to indicate whether the terminal device supports resource reuse with other terminal devices in the case of DMRS and data overlay transmission, and / or, the multi-user multiplexing information is used to indicate the maximum number of multiplexing layers supported by the terminal device in the case of DMRS and data overlay transmission.

[0304] In some embodiments, the first capability information includes multi-user handover information, which is used to indicate whether the terminal device supports dynamic handover between multi-user multiplexing and single-user transmission in the case of DMRS and data overlay transmission.

[0305] In some embodiments, the first capability information includes multi-TRP transmission information, which is used to indicate whether the terminal device supports a multi-TRP transmission scheme in the case of DMRS and data overlay transmission, and / or, the multi-TRP transmission information is used to indicate the multi-TRP transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission.

[0306] In some embodiments, the first capability information includes TRP switching information, which is used to indicate whether the terminal device supports dynamic switching between multiple TRP transmission schemes and single TRP transmission schemes in the case of DMRS and data overlay transmission.

[0307] In some embodiments, the first capability information includes MCS table information, which is used to indicate the MCS tables supported by the terminal device in the case of DMRS and data overlay transmission, wherein different MCS tables contain different modulation schemes and / or code rates.

[0308] In some embodiments, the first capability information includes receiver switching information, which is used to indicate whether the terminal device supports dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission.

[0309] In some embodiments, the first capability information includes multi-carrier information, which is used to indicate whether the terminal device supports superimposed transmission of DMRS and data on multiple carriers, and / or, the multi-carrier information is used to indicate the maximum number of carriers that the terminal device supports for superimposed transmission of DMRS and data.

[0310] In some embodiments, the first reporting module 510 may be a transceiver 730. The terminal device 500 may also include a processor 710 and a memory 720, as shown in FIG7.

[0311] Figure 6 is a schematic diagram of the network device provided in an embodiment of this application. The network device 600 shown in Figure 6 may include a receiving module 610 and a sending module 620. The receiving module 610 can be used to receive first capability information reported by a terminal device, the first capability information indicating the transmission configuration and / or transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission. The sending module 620 can be used to send scheduling information to the terminal device, the scheduling information being determined based on the first capability information, the scheduling information indicating whether to schedule the terminal device to perform DMRS and data overlay transmission and / or indicating the transmission parameters when the terminal device performs DMRS and data overlay transmission.

[0312] In some embodiments, the first capability information includes PDSCH processing time information, which is used to indicate the time required for the terminal device to detect the first PDSCH, wherein the first PDSCH carries overlaid DMRS and data.

[0313] In some embodiments, the network device further includes: a determining module, configured to determine, based on the time required to detect the first PDSCH, the minimum time interval between the end time of transmission of the first PDSCH and the start time of transmission of the uplink channel carrying the feedback information of the first PDSCH.

[0314] In some embodiments, the first capability information includes minimum resource information, which is used to indicate the minimum number of resources required for the terminal device to support DMRS and data overlay transmission, or the minimum resource information is used to indicate the minimum number of resources required for the terminal device to detect data overlay transmission with DMRS.

[0315] In some embodiments, the minimum resource quantity includes a minimum PRB quantity or a minimum RE quantity.

[0316] In some embodiments, the first capability information includes PRB bundling information, which indicates the size of the PRB bundles supported by the terminal device in the case of DMRS and data overlay transmission, or the PRB bundling information indicates the precoding granularity supported by the terminal device in the case of DMRS and data overlay transmission.

[0317] In some embodiments, the first capability information includes dynamic power information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS power ratio and / or data power ratio, wherein the DMRS power ratio is the power ratio of DMRS and data overlay transmission on physical resources, and the data power ratio is the power ratio of data and data overlay transmission on physical resources.

[0318] In some embodiments, the first capability information includes maximum rank information, which is used to indicate the maximum number of transport layers supported by the terminal device in the case of DMRS and data overlay transmission.

[0319] In some embodiments, the first capability information includes dynamic rank information, which is used to indicate whether the terminal device supports dynamic adjustment of the number of transmission layers in the case of DMRS and data overlay transmission.

[0320] In some embodiments, the first capability information includes maximum MCS information, which is used to indicate the highest modulation scheme and / or highest code rate supported by the terminal device in the case of DMRS and data overlay transmission.

[0321] In some embodiments, the first capability information includes dynamic modulation information, which is used to indicate whether the terminal device supports dynamic adjustment of the modulation method in the case of DMRS and data superposition transmission.

[0322] In some embodiments, the first capability information includes transport block size information, which is used to indicate the maximum and / or minimum transport block size supported by the terminal device in the case of DMRS and data overlay transmission.

[0323] In some embodiments, the first capability information includes DMRS pattern information, which is used to indicate the DMRS pattern supported by the terminal device in the case of DMRS and data overlay transmission.

[0324] In some embodiments, the first capability information includes dynamic DMRS pattern information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS pattern in the case of DMRS and data overlay transmission.

[0325] In some embodiments, the first capability information includes multi-user multiplexing information, which is used to indicate whether the terminal device supports resource reuse with other terminal devices in the case of DMRS and data overlay transmission, and / or, the multi-user multiplexing information is used to indicate the maximum number of multiplexing layers supported by the terminal device in the case of DMRS and data overlay transmission.

[0326] In some embodiments, the first capability information includes multi-user handover information, which is used to indicate whether the terminal device supports dynamic handover between multi-user multiplexing and single-user transmission in the case of DMRS and data overlay transmission.

[0327] In some embodiments, the first capability information includes multi-TRP transmission information, which is used to indicate whether the terminal device supports a multi-TRP transmission scheme in the case of DMRS and data overlay transmission, and / or, the multi-TRP transmission information is used to indicate the multi-TRP transmission scheme supported by the terminal device in the case of DMRS and data overlay transmission.

[0328] In some embodiments, the first capability information includes TRP switching information, which is used to indicate whether the terminal device supports dynamic switching between multiple TRP transmission schemes and single TRP transmission schemes in the case of DMRS and data overlay transmission.

[0329] In some embodiments, the first capability information includes MCS table information, which is used to indicate the MCS tables supported by the terminal device in the case of DMRS and data overlay transmission, wherein different MCS tables contain different modulation schemes and / or code rates.

[0330] In some embodiments, the first capability information includes receiver switching information, which is used to indicate whether the terminal device supports dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission.

[0331] In some embodiments, the first capability information includes multi-carrier information, which is used to indicate whether the terminal device supports superimposed transmission of DMRS and data on multiple carriers, and / or, the multi-carrier information is used to indicate the maximum number of carriers that the terminal device supports for superimposed transmission of DMRS and data.

[0332] In some embodiments, the receiving module 610 and the transmitting module 620 may be a transceiver 730. The network device 600 may also include a processor 710 and a memory 720, as shown in FIG7.

[0333] Figure 7 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 7 indicate that the unit or module is optional. This device 700 can be used to implement the methods described in the above method embodiments. Device 700 can be a chip, a terminal device, or a network device.

[0334] The apparatus 700 may include one or more processors 710. The processor 710 may support the apparatus 700 in implementing the methods described in the preceding method embodiments. The processor 710 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0335] The apparatus 700 may also include one or more memories 720. The memories 720 store a program that can be executed by the processor 710, causing the processor 710 to perform the methods described in the preceding method embodiments. The memories 720 may be independent of the processor 710 or integrated within the processor 710.

[0336] The device 700 may also include a transceiver 730. The processor 710 can communicate with other devices or chips via the transceiver 730. For example, the processor 710 can send and receive data with other devices or chips via the transceiver 730.

[0337] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0338] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0339] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or network device in various embodiments of this application.

[0340] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0341] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0342] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0343] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0344] In the embodiments of this application, the term "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" in the embodiments of this application can be replaced with "instructing" or "used to determine". For example, "A includes B" can be replaced with "A instructs B" or "A is used to determine B".

[0345] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0346] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0347] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0348] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0349] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0350] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0351] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0352] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0353] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The terminal device reports first capability information to the network device. The first capability information is used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of demodulation reference signal DMRS and data superposition transmission.

2. The method according to claim 1, characterized in that, The first capability information includes Physical Downlink Shared Channel (PDSCH) processing time information, which is used to indicate the time required for the terminal device to detect the first PDSCH, wherein the first PDSCH carries overlaid DMRS and data.

3. The method according to claim 2, characterized in that, The method further includes: The terminal device determines the minimum time interval between the end time of the transmission of the first PDSCH and the start time of the transmission of the uplink channel carrying the feedback information of the first PDSCH, based on the time required to detect the first PDSCH. The terminal device reports the feedback information to the network device when the first time interval is greater than or equal to the minimum time interval, wherein the first time interval is the time interval between the end time of the transmission of the first PDSCH and the start time of the transmission of the uplink channel carrying the feedback information of the first PDSCH.

4. The method according to any one of claims 1-3, characterized in that, The first capability information includes minimum resource information, which is used to indicate the minimum number of resources required for the terminal device to support DMRS and data overlay transmission, or the minimum resource information is used to indicate the minimum number of resources required for the terminal device to detect data overlay transmission with DMRS.

5. The method according to claim 4, characterized in that, The minimum resource quantity includes the minimum physical resource block (PRB) quantity or the minimum resource element (RE) quantity.

6. The method according to any one of claims 1-5, characterized in that, The first capability information includes PRB bundling information, which indicates the size of the PRB bundle supported by the terminal device in the case of DMRS and data overlay transmission, or the PRB bundling information indicates the precoding granularity supported by the terminal device in the case of DMRS and data overlay transmission.

7. The method according to any one of claims 1-6, characterized in that, The first capability information includes dynamic power information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS power ratio and / or data power ratio. The DMRS power ratio is the power ratio of DMRS on physical resources for data overlay transmission, and the data power ratio is the power ratio of data on physical resources for data overlay transmission.

8. The method according to any one of claims 1-7, characterized in that, The first capability information includes maximum rank information, which is used to indicate the maximum number of transmission layers supported by the terminal device in the case of DMRS and data overlay transmission.

9. The method according to any one of claims 1-8, characterized in that, The first capability information includes dynamic rank information, which is used to indicate whether the terminal device supports dynamic adjustment of the number of transmission layers in the case of DMRS and data overlay transmission.

10. The method according to any one of claims 1-9, characterized in that, The first capability information includes maximum modulation and coding scheme (MCS) information, which indicates the highest modulation scheme and / or highest code rate supported by the terminal device under DMRS and data overlay transmission.

11. The method according to any one of claims 1-10, characterized in that, The first capability information includes dynamic modulation information, which is used to indicate whether the terminal device supports dynamic adjustment of the modulation method in the case of DMRS and data superposition transmission.

12. The method according to any one of claims 1-11, characterized in that, The first capability information includes transport block size information, which is used to indicate the maximum and / or minimum transport block size supported by the terminal device in the case of DMRS and data overlay transmission.

13. The method according to any one of claims 1-12, characterized in that, The first capability information includes DMRS pattern information, which is used to indicate the DMRS pattern supported by the terminal device in the case of DMRS and data overlay transmission.

14. The method according to any one of claims 1-13, characterized in that, The first capability information includes dynamic DMRS pattern information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS pattern when DMRS and data are overlaid and transmitted.

15. The method according to any one of claims 1-14, characterized in that, The first capability information includes multi-user multiplexing information, which is used to indicate whether the terminal device supports resource multiplexing with other terminal devices in the case of DMRS and data overlay transmission, and / or, the multi-user multiplexing information is used to indicate the maximum number of multiplexing layers supported by the terminal device in the case of DMRS and data overlay transmission.

16. The method according to any one of claims 1-15, characterized in that, The first capability information includes multi-user handover information, which is used to indicate whether the terminal device supports dynamic handover between multi-user multiplexing and single-user transmission in the case of DMRS and data overlay transmission.

17. The method according to any one of claims 1-16, characterized in that, The first capability information includes multiple transmission receiving point (TRP) transmission information, which is used to indicate whether the terminal device supports multiple TRP transmission schemes in the case of DMRS and data overlay transmission, and / or, the multiple TRP transmission information is used to indicate the multiple TRP transmission schemes supported by the terminal device in the case of DMRS and data overlay transmission.

18. The method according to any one of claims 1-17, characterized in that, The first capability information includes TRP switching information, which is used to indicate whether the terminal device supports dynamic switching between multi-TRP transmission schemes and single-TRP transmission schemes under DMRS and data overlay transmission.

19. The method according to any one of claims 1-18, characterized in that, The first capability information includes MCS table information, which is used to indicate the MCS table supported by the terminal device in the case of DMRS and data overlay transmission, wherein different MCS tables contain different modulation schemes and / or code rates.

20. The method according to any one of claims 1-19, characterized in that, The first capability information includes receiver switching information, which is used to indicate whether the terminal device supports dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission.

21. The method according to any one of claims 1-20, characterized in that, The first capability information includes multi-carrier information, which is used to indicate whether the terminal device supports the superimposed transmission of DMRS and data on multiple carriers, and / or, the multi-carrier information is used to indicate the maximum number of carriers that the terminal device supports for superimposed transmission of DMRS and data.

22. A method for wireless communication, characterized in that, include: The network device receives first capability information reported by the terminal device, the first capability information being used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of demodulation reference signal DMRS and data superposition transmission; The network device sends scheduling information to the terminal device. The scheduling information is determined based on the first capability information. The scheduling information is used to indicate whether to schedule the terminal device to perform DMRS and data overlay transmission and / or to indicate the transmission parameters when the terminal device performs DMRS and data overlay transmission.

23. The method according to claim 22, characterized in that, The first capability information includes Physical Downlink Shared Channel (PDSCH) processing time information, which is used to indicate the time required for the terminal device to detect the first PDSCH, wherein the first PDSCH carries overlaid DMRS and data.

24. The method according to claim 23, characterized in that, The method further includes: The network device determines the minimum time interval between the end time of the first PDSCH transmission and the start time of the uplink channel carrying the feedback information of the first PDSCH, based on the time required to detect the first PDSCH.

25. The method according to any one of claims 22-24, characterized in that, The first capability information includes minimum resource information, which is used to indicate the minimum number of resources required for the terminal device to support DMRS and data overlay transmission, or the minimum resource information is used to indicate the minimum number of resources required for the terminal device to detect data overlay transmission with DMRS.

26. The method according to claim 25, characterized in that, The minimum resource quantity includes the minimum physical resource block (PRB) quantity or the minimum resource element (RE) quantity.

27. The method according to any one of claims 22-26, characterized in that, The first capability information includes PRB bundling information, which indicates the size of the PRB bundle supported by the terminal device in the case of DMRS and data overlay transmission, or the PRB bundling information indicates the precoding granularity supported by the terminal device in the case of DMRS and data overlay transmission.

28. The method according to any one of claims 22-27, characterized in that, The first capability information includes dynamic power information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS power ratio and / or data power ratio. The DMRS power ratio is the power ratio of DMRS on physical resources for data overlay transmission, and the data power ratio is the power ratio of data on physical resources for data overlay transmission.

29. The method according to any one of claims 22-28, characterized in that, The first capability information includes maximum rank information, which is used to indicate the maximum number of transmission layers supported by the terminal device in the case of DMRS and data overlay transmission.

30. The method according to any one of claims 22-29, characterized in that, The first capability information includes dynamic rank information, which is used to indicate whether the terminal device supports dynamic adjustment of the number of transmission layers in the case of DMRS and data overlay transmission.

31. The method according to any one of claims 22-30, characterized in that, The first capability information includes maximum modulation and coding scheme (MCS) information, which indicates the highest modulation scheme and / or highest code rate supported by the terminal device under DMRS and data overlay transmission.

32. The method according to any one of claims 22-31, characterized in that, The first capability information includes dynamic modulation information, which is used to indicate whether the terminal device supports dynamic adjustment of the modulation method in the case of DMRS and data superposition transmission.

33. The method according to any one of claims 22-32, characterized in that, The first capability information includes transport block size information, which is used to indicate the maximum and / or minimum transport block size supported by the terminal device in the case of DMRS and data overlay transmission.

34. The method according to any one of claims 22-33, characterized in that, The first capability information includes DMRS pattern information, which is used to indicate the DMRS pattern supported by the terminal device in the case of DMRS and data overlay transmission.

35. The method according to any one of claims 22-34, characterized in that, The first capability information includes dynamic DMRS pattern information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS pattern when DMRS and data are overlaid and transmitted.

36. The method according to any one of claims 22-35, characterized in that, The first capability information includes multi-user multiplexing information, which is used to indicate whether the terminal device supports resource multiplexing with other terminal devices in the case of DMRS and data overlay transmission, and / or, the multi-user multiplexing information is used to indicate the maximum number of multiplexing layers supported by the terminal device in the case of DMRS and data overlay transmission.

37. The method according to any one of claims 22-36, characterized in that, The first capability information includes multi-user handover information, which is used to indicate whether the terminal device supports dynamic handover between multi-user multiplexing and single-user transmission in the case of DMRS and data overlay transmission.

38. The method according to any one of claims 22-37, characterized in that, The first capability information includes multiple transmission receiving point (TRP) transmission information, which is used to indicate whether the terminal device supports multiple TRP transmission schemes in the case of DMRS and data overlay transmission, and / or, the multiple TRP transmission information is used to indicate the multiple TRP transmission schemes supported by the terminal device in the case of DMRS and data overlay transmission.

39. The method according to any one of claims 22-38, characterized in that, The first capability information includes TRP switching information, which is used to indicate whether the terminal device supports dynamic switching between multi-TRP transmission schemes and single-TRP transmission schemes under DMRS and data overlay transmission.

40. The method according to any one of claims 22-39, characterized in that, The first capability information includes MCS table information, which is used to indicate the MCS table supported by the terminal device in the case of DMRS and data overlay transmission, wherein different MCS tables contain different modulation schemes and / or code rates.

41. The method according to any one of claims 22-40, characterized in that, The first capability information includes receiver switching information, which is used to indicate whether the terminal device supports dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission.

42. The method according to any one of claims 22-41, characterized in that, The first capability information includes multi-carrier information, which is used to indicate whether the terminal device supports the superimposed transmission of DMRS and data on multiple carriers, and / or, the multi-carrier information is used to indicate the maximum number of carriers that the terminal device supports for superimposed transmission of DMRS and data.

43. A terminal device, characterized in that, include: The first reporting module is used to report first capability information to the network device. The first capability information is used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of demodulation reference signal DMRS and data superposition transmission.

44. The terminal device according to claim 43, characterized in that, The first capability information includes Physical Downlink Shared Channel (PDSCH) processing time information, which is used to indicate the time required for the terminal device to detect the first PDSCH, wherein the first PDSCH carries overlaid DMRS and data.

45. The terminal device according to claim 44, characterized in that, The terminal device also includes: The determining module is used to determine, based on the time required to detect the first PDSCH, the minimum time interval between the end time of transmission of the first PDSCH and the start time of transmission of the uplink channel carrying the feedback information of the first PDSCH. The second reporting module is used to report the feedback information to the network device when the first time interval is greater than or equal to the minimum time interval, wherein the first time interval is the time interval between the end time of the transmission of the first PDSCH and the start time of the transmission of the uplink channel carrying the feedback information of the first PDSCH.

46. ​​The terminal device according to any one of claims 43-45, characterized in that, The first capability information includes minimum resource information, which is used to indicate the minimum number of resources required for the terminal device to support DMRS and data overlay transmission, or the minimum resource information is used to indicate the minimum number of resources required for the terminal device to detect data overlay transmission with DMRS.

47. The terminal device according to claim 46, characterized in that, The minimum resource quantity includes the minimum physical resource block (PRB) quantity or the minimum resource element (RE) quantity.

48. The terminal device according to any one of claims 43-47, characterized in that, The first capability information includes PRB bundling information, which indicates the size of the PRB bundle supported by the terminal device in the case of DMRS and data overlay transmission, or the PRB bundling information indicates the precoding granularity supported by the terminal device in the case of DMRS and data overlay transmission.

49. The terminal device according to any one of claims 43-48, characterized in that, The first capability information includes dynamic power information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS power ratio and / or data power ratio. The DMRS power ratio is the power ratio of DMRS on physical resources for data overlay transmission, and the data power ratio is the power ratio of data on physical resources for data overlay transmission.

50. The terminal device according to any one of claims 43-49, characterized in that, The first capability information includes maximum rank information, which is used to indicate the maximum number of transmission layers supported by the terminal device in the case of DMRS and data overlay transmission.

51. The terminal device according to any one of claims 43-50, characterized in that, The first capability information includes dynamic rank information, which is used to indicate whether the terminal device supports dynamic adjustment of the number of transmission layers in the case of DMRS and data overlay transmission.

52. The terminal device according to any one of claims 43-51, characterized in that, The first capability information includes maximum modulation and coding scheme (MCS) information, which indicates the highest modulation scheme and / or highest code rate supported by the terminal device under DMRS and data overlay transmission.

53. The terminal device according to any one of claims 43-52, characterized in that, The first capability information includes dynamic modulation information, which is used to indicate whether the terminal device supports dynamic adjustment of the modulation method in the case of DMRS and data superposition transmission.

54. The terminal device according to any one of claims 43-53, characterized in that, The first capability information includes transport block size information, which is used to indicate the maximum and / or minimum transport block size supported by the terminal device in the case of DMRS and data overlay transmission.

55. The terminal device according to any one of claims 43-54, characterized in that, The first capability information includes DMRS pattern information, which is used to indicate the DMRS pattern supported by the terminal device in the case of DMRS and data overlay transmission.

56. The terminal device according to any one of claims 43-55, characterized in that, The first capability information includes dynamic DMRS pattern information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS pattern when DMRS and data are overlaid and transmitted.

57. The terminal device according to any one of claims 43-56, characterized in that, The first capability information includes multi-user multiplexing information, which is used to indicate whether the terminal device supports resource multiplexing with other terminal devices in the case of DMRS and data overlay transmission, and / or, the multi-user multiplexing information is used to indicate the maximum number of multiplexing layers supported by the terminal device in the case of DMRS and data overlay transmission.

58. The terminal device according to any one of claims 43-57, characterized in that, The first capability information includes multi-user handover information, which is used to indicate whether the terminal device supports dynamic handover between multi-user multiplexing and single-user transmission in the case of DMRS and data overlay transmission.

59. The terminal device according to any one of claims 43-58, characterized in that, The first capability information includes multiple transmission receiving point (TRP) transmission information, which is used to indicate whether the terminal device supports multiple TRP transmission schemes in the case of DMRS and data overlay transmission, and / or, the multiple TRP transmission information is used to indicate the multiple TRP transmission schemes supported by the terminal device in the case of DMRS and data overlay transmission.

60. The terminal device according to any one of claims 43-59, characterized in that, The first capability information includes TRP switching information, which is used to indicate whether the terminal device supports dynamic switching between multi-TRP transmission schemes and single-TRP transmission schemes under DMRS and data overlay transmission.

61. The terminal device according to any one of claims 43-60, characterized in that, The first capability information includes MCS table information, which is used to indicate the MCS table supported by the terminal device in the case of DMRS and data overlay transmission, wherein different MCS tables contain different modulation schemes and / or code rates.

62. The terminal device according to any one of claims 43-61, characterized in that, The first capability information includes receiver switching information, which is used to indicate whether the terminal device supports dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission.

63. The terminal device according to any one of claims 43-62, characterized in that, The first capability information includes multi-carrier information, which is used to indicate whether the terminal device supports the superimposed transmission of DMRS and data on multiple carriers, and / or, the multi-carrier information is used to indicate the maximum number of carriers that the terminal device supports for superimposed transmission of DMRS and data.

64. A network device, characterized in that, include: The receiving module is used to receive first capability information reported by the terminal device, wherein the first capability information is used to indicate the transmission configuration and / or transmission scheme supported by the terminal device in the case of demodulation reference signal DMRS and data superposition transmission. The sending module is used to send scheduling information to the terminal device. The scheduling information is determined based on the first capability information. The scheduling information is used to indicate whether to schedule the terminal device to perform DMRS and data superposition transmission and / or to indicate the transmission parameters when the terminal device performs DMRS and data superposition transmission.

65. The network device according to claim 64, characterized in that, The first capability information includes Physical Downlink Shared Channel (PDSCH) processing time information, which is used to indicate the time required for the terminal device to detect the first PDSCH, wherein the first PDSCH carries overlaid DMRS and data.

66. The network device according to claim 65, characterized in that, The network device also includes: The determining module is used to determine, based on the time required to detect the first PDSCH, the minimum time interval between the end time of transmission of the first PDSCH and the start time of transmission of the uplink channel carrying the feedback information of the first PDSCH.

67. The network device according to any one of claims 64-66, characterized in that, The first capability information includes minimum resource information, which is used to indicate the minimum number of resources required for the terminal device to support DMRS and data overlay transmission, or the minimum resource information is used to indicate the minimum number of resources required for the terminal device to detect data overlay transmission with DMRS.

68. The network device according to claim 67, characterized in that, The minimum resource quantity includes the minimum physical resource block (PRB) quantity or the minimum resource element (RE) quantity.

69. The network device according to any one of claims 64-68, characterized in that, The first capability information includes PRB bundling information, which indicates the size of the PRB bundle supported by the terminal device in the case of DMRS and data overlay transmission, or the PRB bundling information indicates the precoding granularity supported by the terminal device in the case of DMRS and data overlay transmission.

70. The network device according to any one of claims 64-69, characterized in that, The first capability information includes dynamic power information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS power ratio and / or data power ratio. The DMRS power ratio is the power ratio of DMRS on physical resources for data overlay transmission, and the data power ratio is the power ratio of data on physical resources for data overlay transmission.

71. The network device according to any one of claims 64-70, characterized in that, The first capability information includes maximum rank information, which is used to indicate the maximum number of transmission layers supported by the terminal device in the case of DMRS and data overlay transmission.

72. The network device according to any one of claims 64-71, characterized in that, The first capability information includes dynamic rank information, which is used to indicate whether the terminal device supports dynamic adjustment of the number of transmission layers in the case of DMRS and data overlay transmission.

73. The network device according to any one of claims 64-72, characterized in that, The first capability information includes maximum modulation and coding scheme (MCS) information, which indicates the highest modulation scheme and / or highest code rate supported by the terminal device under DMRS and data overlay transmission.

74. The network device according to any one of claims 64-73, characterized in that, The first capability information includes dynamic modulation information, which is used to indicate whether the terminal device supports dynamic adjustment of the modulation method in the case of DMRS and data superposition transmission.

75. The network device according to any one of claims 64-74, characterized in that, The first capability information includes transport block size information, which is used to indicate the maximum and / or minimum transport block size supported by the terminal device in the case of DMRS and data overlay transmission.

76. The network device according to any one of claims 64-75, characterized in that, The first capability information includes DMRS pattern information, which is used to indicate the DMRS pattern supported by the terminal device in the case of DMRS and data overlay transmission.

77. The network device according to any one of claims 64-76, characterized in that, The first capability information includes dynamic DMRS pattern information, which is used to indicate whether the terminal device supports dynamic adjustment of the DMRS pattern when DMRS and data are overlaid and transmitted.

78. The network device according to any one of claims 64-77, characterized in that, The first capability information includes multi-user multiplexing information, which is used to indicate whether the terminal device supports resource multiplexing with other terminal devices in the case of DMRS and data overlay transmission, and / or, the multi-user multiplexing information is used to indicate the maximum number of multiplexing layers supported by the terminal device in the case of DMRS and data overlay transmission.

79. The network device according to any one of claims 64-78, characterized in that, The first capability information includes multi-user handover information, which is used to indicate whether the terminal device supports dynamic handover between multi-user multiplexing and single-user transmission in the case of DMRS and data overlay transmission.

80. The network device according to any one of claims 64-79, characterized in that, The first capability information includes multiple transmission receiving point (TRP) transmission information, which is used to indicate whether the terminal device supports multiple TRP transmission schemes in the case of DMRS and data overlay transmission, and / or, the multiple TRP transmission information is used to indicate the multiple TRP transmission schemes supported by the terminal device in the case of DMRS and data overlay transmission.

81. The network device according to any one of claims 64-80, characterized in that, The first capability information includes TRP switching information, which is used to indicate whether the terminal device supports dynamic switching between multi-TRP transmission schemes and single-TRP transmission schemes under DMRS and data overlay transmission.

82. The network device according to any one of claims 64-81, characterized in that, The first capability information includes MCS table information, which is used to indicate the MCS table supported by the terminal device in the case of DMRS and data overlay transmission, wherein different MCS tables contain different modulation schemes and / or code rates.

83. The network device according to any one of claims 64-82, characterized in that, The first capability information includes receiver switching information, which is used to indicate whether the terminal device supports dynamic switching between DMRS and data overlay transmission and DMRS and data orthogonal transmission.

84. The network device according to any one of claims 64-83, characterized in that, The first capability information includes multi-carrier information, which is used to indicate whether the terminal device supports the superimposed transmission of DMRS and data on multiple carriers, and / or, the multi-carrier information is used to indicate the maximum number of carriers that the terminal device supports for superimposed transmission of DMRS and data.

85. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 1-21.

86. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 22-42.

87. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-21 or 22-42.

88. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-21 or 22-42.

89. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-21 or 22-42.

90. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-21 or 22-42.

91. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-21 or 22-42.

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