Wireless communication method, terminal device, and network device

Abstract

A wireless communication method, a terminal device, and a network device. The method comprises: a terminal device reports a terminal device capability to a network device; and the terminal device receives n transmission parameter sets indicated by the network device, wherein the n transmission parameter sets are used for n uplink transmissions of the terminal device, n is a positive integer, and each transmission parameter set comprises one or more combinations of the following parameters: a sounding reference signal (SRS) resource set index, an SRS resource index, the number of SRS resources, the maximum number of SRS ports, and the maximum number of transmission layers corresponding to the SRS resource set index.

Description

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

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

[0002] In related technologies, the uplink transmission scheme of multiple transmission reception points (TRP) / antenna panels can only support that the terminal devices associated with each panel of the terminal device have the same capabilities.

[0003] In some scenarios, the capabilities of different terminal devices associated with different panels deployed on supporting terminal devices vary. In this case, how to configure transmission parameters to ensure transmission performance is a problem that urgently needs to be solved.

[0004] Summary of the Invention

[0005] This application provides a wireless communication method, terminal device, and network device, which helps to ensure the uplink transmission performance of the terminal device.

[0006] In a first aspect, a wireless communication method is provided, comprising: a terminal device reporting its capabilities to a network device; the terminal device receiving an n-fold set of transmission parameters indicated by the network device, the n-fold set of transmission parameters being used for n uplink transmissions of the terminal device, wherein n is a positive integer, and the transmission parameter set including one or more of the following parameters: a Sounding Reference Signal (SRS) resource set index, an SRS resource index, a number of SRS resources, a maximum number of SRS ports, and a maximum number of transmission layers corresponding to the SRS resource set index.

[0007] Secondly, a wireless communication method is provided, comprising: a network device receiving terminal device capabilities reported by a terminal device; indicating n sets of transmission parameters to the terminal device, the n sets of transmission parameters being used for n uplink transmissions of the terminal device, where n is a positive integer, and the sets of transmission parameters including one or more of the following parameters: a sounding reference signal resource set index, an SRS resource index, a number of SRS resources, a maximum number of SRS ports, and a maximum number of transmission layers corresponding to the SRS resource set index.

[0008] Thirdly, a terminal device is provided for executing the methods described in the first aspect or its various implementations.

[0009] Specifically, the terminal device includes a functional module for performing the methods described in the first aspect or its various implementations.

[0010] Fourthly, a network device is provided for performing the methods described in the second aspect or its various implementations.

[0011] Specifically, the network device includes a functional module for performing the methods described in the second aspect or its various implementations.

[0012] Fifthly, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the methods described in the first aspect or its various implementations.

[0013] In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the methods in the second aspect or its implementations described above.

[0014] In a seventh aspect, a chip is provided for implementing the methods of any one of the first to second aspects or their respective implementations. Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is installed to perform the methods of any one of the first to second aspects or their respective implementations.

[0015] Eighthly, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the methods of any one of the first to second aspects or their respective implementations.

[0016] Ninthly, a computer program product is provided, including computer program instructions that cause a computer to perform the methods of any one of the first to second aspects or their respective implementations.

[0017] In a tenth aspect, a computer program is provided that, when run on a computer, causes the computer to perform the methods of any one of the first to second aspects or their respective implementations.

[0018] Through the above technical solution, the terminal device can report the terminal device capabilities supported by n uplink transmissions to the network device. Furthermore, the network device indicates n sets of transmission parameters for the n uplink transmissions, wherein the n sets of transmission parameters correspond one-to-one with the n uplink transmissions. That is, the network device can configure a corresponding set of transmission parameters for each uplink transmission. On the one hand, this improves the flexibility of panel switching when deploying asymmetric capability panels on the terminal device side. On the other hand, by configuring a corresponding set of transmission parameters for each uplink transmission, it is beneficial to ensure the performance of each of the n uplink transmissions. Attached Figure Description

[0019] Figure 1 is a schematic diagram of a communication system architecture provided in an embodiment of this application.

[0020] Figure 2 illustrates a TDM transmission scheme for a multi-TRP PUSCH.

[0021] Figure 3 illustrates an SDM transmission scheme for a multi-TRP PUSCH.

[0022] Figure 4 illustrates an SFN transmission scheme for PUSCH with multiple TRPs.

[0023] Figures 5 to 7 are schematic diagrams of three different capabilities of panels deployed on the terminal device side.

[0024] Figure 8 is a schematic interactive diagram of a wireless communication method provided according to an embodiment of this application.

[0025] Figure 9 is a schematic diagram of an application scenario according to an embodiment of this application.

[0026] Figure 10 is a schematic interactive diagram of an indication method for a set of transmission parameters provided in an embodiment of this application.

[0027] Figure 11 is a schematic interactive diagram of another way of indicating a set of transmission parameters provided in an embodiment of this application.

[0028] Figure 12 is a schematic diagram illustrating the usage of a set of transmission parameters provided in an embodiment of this application.

[0029] Figure 13 is a schematic block diagram of a terminal device provided according to an embodiment of this application.

[0030] Figure 14 is a schematic block diagram of a network device provided according to an embodiment of this application.

[0031] Figure 15 is a schematic block diagram of a communication device provided according to an embodiment of this application.

[0032] Figure 16 is a schematic block diagram of a chip provided according to an embodiment of this application.

[0033] Figure 17 is a schematic block diagram of a communication system provided according to an embodiment of this application. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art without creative effort regarding the embodiments of this application are within the scope of protection of this application.

[0035] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and Wireless Fidelity (WF). Fidelity (WiFi), 5th-Generation (5G) communication systems, or other communication systems.

[0036] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0037] Optionally, the communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, or standalone (SA) network deployment scenarios.

[0038] Optionally, the communication system in this application embodiment can be applied to unlicensed spectrum, wherein unlicensed spectrum can also be considered as shared spectrum; or, the communication system in this application embodiment can also be applied to licensed spectrum, wherein licensed spectrum can also be considered as non-shared spectrum.

[0039] This application describes various embodiments in conjunction with network devices and terminal devices. The terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc.

[0040] Terminal devices can be stations (STAs) in WLANs, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in next-generation communication systems such as NR networks, or terminal devices in future evolved Public Land Mobile Network (PLMN) networks, etc.

[0041] In the embodiments of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships); and it can also be deployed in the air (such as airplanes, balloons and satellites).

[0042] In the embodiments of this application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical care, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0043] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0044] In the embodiments of this application, the network device can be a device for communicating with mobile devices. The network device can be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, a relay station or access point, or a vehicle-mounted device, wearable device, or a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or an NTN network, etc.

[0045] By way of example and not limitation, in this embodiment, the network device may have mobility characteristics; for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low Earth orbit (LEO) satellite, a medium Earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, or other similar locations.

[0046] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0047] As exemplified, the communication system 100 used in this application embodiment is shown in FIG1. ​​The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within the coverage area.

[0048] Figure 1 illustrates an exemplary network device and two terminal devices. Optionally, the 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.

[0049] Optionally, the 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.

[0050] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 can be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities. This application embodiment does not limit this.

[0051] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0052] It should be understood that the term "instruction" mentioned in the embodiments of this application 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.

[0053] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0054] In this application embodiment, "predefined" 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.

[0055] 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.

[0056] To facilitate understanding of the technical solutions of the embodiments of this application, the Physical Uplink Shared Channel (PUSCH) transmission scheme of multiple Transmission Reception Points (TRPs) related to this application will be described.

[0057] The NR system introduces incoherent downlink and uplink transmission based on multiple TRPs. The backhaul connection between TRPs can be ideal or non-ideal. In an ideal backhaul, TRPs can exchange information quickly and dynamically, while in a non-ideal backhaul, due to higher latency, TRPs can only exchange information quasi-statically. In downlink incoherent transmission, multiple TRPs can independently schedule multiple PDSCH transmissions of a single terminal using different control channels, or they can use the same control channel to schedule the transmissions of different TRPs. Data from different TRPs uses different transport layers; the latter is only suitable for ideal backhaul scenarios.

[0058] In some scenarios, the UE can send PUSCH to two TRPs in a time-division multiplexing (TDM) manner.

[0059] In some scenarios, network devices can schedule terminal devices to transmit PUSCH to two TRPs via a single Downlink Control Information (DCI). The PUSCH transmitted to the two TRPs can be configured with independent transmission parameters, such as beamforming and precoding matrices, but the number of transmission layers for the PUSCH transmitted to both TRPs must be the same. The terminal device aligns the PUSCH transmitted to different TRPs with the corresponding TRPs using simulated beamforming, thereby distinguishing different PUSCH in the spatial domain and improving uplink spectral efficiency.

[0060] For codebook-based PUSCH transmission, this single DCI needs to include two Sounding Reference Signal (SRS) resource indicator (SRI) fields and two precoding information and transport layer number fields. The first precoding information and transport layer number field indicates the precoding information and transport layer number of the PUSCH sent to TRP1. The transport layer number of the PUSCH sent to TRP2 is the same as the transport layer number indicated by the first precoding information and transport layer number field. The first SRI field indicates the beam direction of the PUSCH sent to TRP1, and the second SRI field indicates the beam direction of the PUSCH sent to TRP2. The network device is configured with two SRS resource sets, with the first and second SRI fields corresponding to these two SRS resource sets respectively, used to indicate the beam direction of the PUSCH transmitted to the two TRPs. The second precoding information and layer number field only needs to indicate the precoding information; the transport layer number is the same as the transport layer number indicated by the first precoding information and layer number field by default.

[0061] For non-codebook-based PUSCH transmission, the single DCI needs to contain two SRI fields. The first SRI field is used to indicate the beam direction and transmission layer number of the PUSCH sent to TRP1, and the second SRI field is used to indicate the beam direction of the PUSCH sent to TRP2. The transmission layer number of the PUSCH sent to TRP2 is the same as the transmission layer number indicated by the first SRI.

[0062] In other scenarios, network devices can also schedule terminal devices to transmit PUSCH to two TRPs through multiple DCIs. These multiple DCIs can be carried by different Control Resource Sets (CORESETs). The network device configures multiple CORESET groups, and each TRP uses the CORESETs in its respective CORESET group for scheduling. In other words, different TRPs can be distinguished by CORESET groups. For example, the network device can configure a CORESET group index for each CORESET, with different indices corresponding to different TRPs.

[0063] When the transmission scheme of the PUSCH in a multi-TRP system is a TDM scheme, Figure 2 shows a TDM scheme. Taking time slot-based TDM repetitive transmission as an example, it satisfies the following characteristics:

[0064] Repeat type A (slot-based PUSCH): Two sets of PUSCH (using the same or different Redundancy Version, RV) are sent at the same symbol position in K consecutive time slots. Each set of PUSCH is associated with an SRS resource set and a Transmission Configuration Indicator (TCI) state.

[0065] Repeat type B (mini-slot based PUSCH): Two sets of PUSCH (same or different RV versions) are sent on K nominal transmission opportunities. Each set of PUSCH is associated with an SRS resource set and a TCI state.

[0066] To facilitate understanding of the technical solutions in the embodiments of this application, the uplink multi-antenna panel / TRP transmission scheme related to this application will be described.

[0067] In some scenarios, uplink multipanel / TRP transmission supports schemes including spatial-division multiplexing (SDM) transmission scheme, single-frequency network (SFN) transmission scheme, and TDM transmission scheme.

[0068] Figure 3 is a schematic diagram of an SDM transmission scheme, which satisfies the following characteristics:

[0069] A PUSCH is sent to different TRPs through different panels of the UE. The uplink resources occupied by different transport layers are the same, but the SRS resource sets associated with different transport layers are different, and the TCI states are different.

[0070] Figure 4 is a schematic diagram of an SFN transmission scheme. The SFN transmission scheme satisfies the following characteristics:

[0071] Repeated transmissions of a PUSCH (e.g., including PUSCH1 and PUSCH2) are sent to different TRPs through different panels of the UE. PUSCH1 and PUSCH2 occupy the same uplink resources but have different associated SRS resource sets and different TCI states.

[0072] In related technologies, multi-panel / TRP transmission schemes can only associate each panel deployed on the terminal device side with the same terminal device capabilities. For example, the following configurations are the same for the SRS resource set associated with each panel:

[0073] The number of SRS resources in the SRS resource set;

[0074] The number of ports of the SRS resource indicated by the network device;

[0075] The maximum number of transport layers associated with an SRS resource set.

[0076] Specifically, the number of SRS resources in an SRS resource set, the number of ports of an SRS resource, and the maximum number of transport layers associated with each SRS resource set are all configured via Radio Resource Control (RRC) signaling and are configured to the same value.

[0077] In some scenarios, different panels deployed on the terminal device side may correspond to different terminal device capabilities, such as varying numbers of associated SRS ports. As shown in Figures 5 to 7, three panels are deployed on the terminal device side, each associated with different terminal device capabilities and different numbers of associated SRS ports: 1 port, 2 ports, and 4 ports, respectively. In this case, the terminal device capabilities associated with each panel can be considered asymmetrical. Therefore, configuring transmission parameters (e.g., when dynamically switching between panels used for uplink transmission and downlink transmission reception) to ensure transmission performance is a critical issue that needs to be addressed.

[0078] To facilitate understanding of the technical solutions of the embodiments of this application, the technical solutions of this application are described in detail below through specific embodiments. The above-mentioned related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0079] Figure 8 is a schematic interactive diagram of a wireless communication method 200 according to an embodiment of this application. As shown in Figure 8, the method 200 includes at least the following:

[0080] S201, The terminal device reports its capabilities to the network device;

[0081] S202, The terminal device receives a set of n transmission parameters indicated by the network device, where n is a positive integer.

[0082] In some embodiments, the n uplink transmissions may be PUSCH transmissions, or other uplink transmissions, such as PUCCH transmissions, etc., which are not limited in this application.

[0083] In some embodiments, the set of n transmission parameters is used for n uplink transmissions of the terminal device.

[0084] For example, one of the n transmission parameter sets is used for one of the n uplink transmissions, meaning that there is a one-to-one correspondence between the n transmission parameter sets and the n uplink transmissions.

[0085] In some embodiments, the transmission parameter set includes a combination of one or more of the following parameters:

[0086] SRS resource set index, SRS resource index, number of SRS resources, maximum number of SRS ports, and maximum number of transport layers corresponding to the SRS resource set index.

[0087] In one specific embodiment, a set of transmission parameters includes the following parameters:

[0088] An SRS resource set index and the maximum number of transport layers.

[0089] In another specific embodiment, a set of transmission parameters includes the following parameters:

[0090] An SRS resource set index, maximum number of transport layers, and maximum number of SRS ports.

[0091] In yet another specific embodiment, a set of transmission parameters includes the following parameters:

[0092] An SRS resource set index, maximum number of transport layers, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0093] In some embodiments, the SRS resource set index is a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0094] In some embodiments, the SRS resource index is used to indicate the SRS resources included in the SRS resource set indicated by the SRS resource set index.

[0095] In some embodiments, the number of SRS resources is used to indicate the number of SRS resources included in the SRS resource set indicated by the SRS resource set index.

[0096] In some embodiments, the maximum number of SRS ports is used to indicate the maximum number of ports corresponding to the SRS resources included in the SRS resource set indicated by the SRS resource set index.

[0097] In some embodiments, n = 1. That is, the n uplink transmissions can be a single uplink transmission, for example, a single TRP / panel uplink transmission.

[0098] In some embodiments, n > 1. That is, the n uplink transmissions can be multiple uplink transmissions, such as uplink transmissions of multiple TRPs / panels. The uplink transmissions of multiple TRPs / panels can be scheduled by a single DCI, or they can be scheduled by multiple DCIs.

[0099] That is, the embodiments of this application can be applied to uplink transmission of a single TRP / panel, or it can be applied to uplink transmission of multiple TRP / panels. The uplink transmission of multiple TRP / panels can be scheduled by a single DCI, or it can be scheduled by multiple DCIs. This application does not limit this.

[0100] In some embodiments, when n > 1, the configurations of the transmission parameters in different transmission parameter sets among the n transmission parameter sets are completely identical. This situation may correspond to the same terminal device capabilities for the n uplink transmissions, for example, the terminal devices associated with the panels used by the n uplink transmissions have the same capabilities.

[0101] For example, the n transmission parameter sets include a first transmission parameter set and a second transmission parameter set. The first transmission parameter set includes a first SRS resource set index and a first maximum transmission layer. The second transmission parameter set includes a second SRS resource set index and a second maximum transmission layer. The first SRS resource set index and the second SRS resource set index are the same, and the first maximum transmission layer and the second maximum transmission layer can be the same.

[0102] In some embodiments, when n > 1, the configurations of the transmission parameters in different transmission parameter sets among the n transmission parameter sets are different or completely different.

[0103] For example, the n transmission parameter sets include a first transmission parameter set and a second transmission parameter set. The first transmission parameter set includes a first SRS resource set index and a first maximum transmission layer. The second transmission parameter set includes a second SRS resource set index and a second maximum transmission layer. The first SRS resource set index and the second SRS resource set index are different, and the first maximum transmission layer and the second maximum transmission layer can be the same.

[0104] For example, the n transmission parameter sets include a first transmission parameter set and a second transmission parameter set. The first transmission parameter set includes a first SRS resource set index and a first maximum transmission layer. The second transmission parameter set includes a second SRS resource set index and a second maximum transmission layer. The first SRS resource set index and the second SRS resource set index are different, and the first maximum transmission layer and the second maximum transmission layer can be different.

[0105] It should be understood that in the embodiments of this application, when n>1, the number of transmission parameters included in different transmission parameter sets in the n transmission parameter sets may be the same or different.

[0106] In some embodiments, the n sets of transmission parameters include a first set of transmission parameters and a second set of transmission parameters. The first set of transmission parameters includes y transmission parameters, where y is a positive integer greater than 1. The second set of transmission parameters includes z transmission parameters, where z is a positive integer. If the y transmission parameters include the z transmission parameters and y is greater than z, that is, the y transmission parameters are yz more than the z transmission parameters, then for the second set of transmission parameters, the configuration of the yz transmission parameters can be the same as that of the yz transmission parameters in the first set of transmission parameters.

[0107] For example, the first transmission parameter set includes a first SRS resource set index, a first maximum transmission layer number, and a first maximum SRS port number. The second transmission parameter set includes a second SRS resource set index and a second maximum transmission layer number. The first transmission parameter set has one more transmission parameter than the second transmission parameter set, namely the maximum SRS port number. Therefore, for the second transmission parameter set, the maximum SRS port number can be the same as the maximum SRS port number included in the first transmission parameter set, that is, the first maximum SRS port number can also be used.

[0108] In some embodiments, a plurality of antenna panels are deployed on the terminal device, and at least two of the plurality of antenna panels are associated with different numbers of SRS ports.

[0109] For example, a first antenna panel and a second antenna panel are deployed on the terminal device, and the number of SRS ports associated with the first antenna panel and the second antenna panel are different.

[0110] For example, a terminal device may deploy a first antenna panel, a second antenna panel, and a third antenna panel, wherein at least two of the first, second, and third antenna panels have different numbers of SRS ports associated with them. For instance, the first and second antenna panels may have different numbers of SRS ports associated with them, or the first and third antenna panels may have different numbers of SRS ports associated with them, or the first, second, and third antenna panels may each have different numbers of SRS ports associated with them, as illustrated in Figures 5 to 7.

[0111] In some embodiments, the capabilities of the terminal device include, but are not limited to: the antenna port capabilities supported by the terminal device for transmitting uplink or receiving downlink transmissions, such as the number of SRS ports supported by the terminal device for transmitting uplink or receiving downlink transmissions, or other capabilities that affect transmission parameters, which are not limited in this application.

[0112] In some embodiments, the terminal device capability may be a terminal device capability for n uplink transmissions of the terminal device, such as including the antenna port capability supported by the terminal device for transmitting the n uplink transmissions.

[0113] In some embodiments, the reporting of terminal device capabilities by the terminal device to the network device may refer to: the terminal device reporting its capabilities to the network device for the first time, or the terminal device reporting updated terminal device capabilities to the network device.

[0114] For example, when the capabilities of a terminal device change, the terminal device reports the updated terminal device capabilities to the network device. The updated terminal device capabilities are the currently supported terminal device capabilities. For example, the terminal device capabilities may be the antenna port capabilities supported for sending uplink transmissions or receiving downlink transmissions, such as the number of SRS ports supported by the terminal device for sending uplink transmissions or receiving downlink transmissions.

[0115] In some embodiments, a change in the terminal device's capabilities may include a change in the antenna port capabilities supported by the terminal device for transmitting uplink or receiving downlink transmissions. For example, the number of SRS ports supported for transmitting uplink or receiving downlink transmissions may change. It should be understood that this application does not limit the reasons for triggering changes in the terminal device's capabilities. For example, when the terminal device dynamically switches between panels used for transmitting uplink and those used for receiving downlink transmissions, and the number of SRS ports associated with the panels before and after the switch is different, the terminal device's capabilities may change.

[0116] For example, if multiple antenna panels (including a first antenna panel and a second antenna panel) are deployed on the terminal device side, taking uplink transmission as an example, if the antenna panel used for the uplink transmission to be transmitted by the terminal device is switched from the first antenna panel to the second antenna panel, and the number of SRS ports associated with the first antenna panel and the second antenna panel is different, it can be considered that the terminal device capability supported by the terminal device for transmitting uplink transmission has changed.

[0117] For example, if a terminal device deploys multiple antenna panels (e.g., a first antenna panel, a second antenna panel, and a third antenna panel), taking uplink transmission as an example, the uplink transmission to be transmitted by the terminal device includes two uplink transmissions. If the antenna panels used for these two uplink transmissions are switched from the first and second antenna panels to the second and third antenna panels, and the number of SRS ports associated with the first, second, and third antenna panels are different, then it can be considered that the terminal device capability supported by the terminal device in transmitting uplink transmissions has changed.

[0118] In some embodiments, the set of n transmission parameters may be determined based on the terminal device capabilities reported by the terminal device. These n transmission parameter sets are adapted to the reported terminal device capabilities.

[0119] In some embodiments, the set of n transmission parameters may be the set of n transmission parameters initially activated by the network device, or it may be the set of n transmission parameters updated by the network device.

[0120] In some embodiments, the network device can configure m sets of transmission parameters for the terminal device (e.g., via RRC signaling). These m sets of transmission parameters are suitable for various terminal device capabilities. When the terminal device initially reports its capabilities, the network device can activate n sets of transmission parameters and indicate these n sets of transmission parameters to the terminal device. Alternatively, when the terminal device reports updated capabilities, the network device can update the activated sets of transmission parameters to adapt to the updated capabilities. For example, the network device can dynamically indicate the updated sets of transmission parameters to the terminal device (e.g., via MAC CE or DCI), where m is a positive integer greater than 2.

[0121] In some embodiments, the RRC signaling may include the m sets of transmission parameters. Furthermore, when the terminal device reports its capabilities, the network device may dynamically indicate n sets of transmission parameters from the m sets of transmission parameters, and the terminal device may send uplink transmissions based on the n sets of transmission parameters.

[0122] In other embodiments, the RRC signaling may include the indexes corresponding to the m transmission parameter sets and the specific transmission parameter configurations. Furthermore, when the terminal device reports its capabilities, the network device may indicate the index of the active or updated transmission parameter set. In this way, the terminal device can determine the target transmission parameter set based on the index and the transmission parameter configuration corresponding to the index obtained from the RRC signaling, and further send uplink transmissions based on the target transmission parameter set.

[0123] In some embodiments, the n uplink transmissions of the terminal device may include all uplink transmissions to be sent by the terminal device, or may only include uplink transmissions whose transmission parameters need to be updated, such as uplink transmissions affected by changes in the terminal device's capabilities.

[0124] For example, the total uplink transmissions to be sent by the terminal device may include N uplink transmissions, which may include some or all of the N uplink transmissions. For example, the antenna port capabilities supported by the terminal device for sending these N uplink transmissions may change.

[0125] The following describes the indication method of the transmission parameter set with reference to specific embodiments.

[0126] Example 1: The transmission parameter set is indicated by the Media Access Control Element (MAC CE).

[0127] This embodiment 1 can be applied to uplink transmission of a single TRP / panel, uplink transmission of multiple TRP / panels with single DCI scheduling, and uplink transmission of multiple TRP / panels with multiple DCI scheduling.

[0128] In some embodiments, when the capabilities of a terminal device change, such as when the terminal device dynamically switches between panels used for sending uplink transmissions and those used for receiving downlink transmissions, the terminal device can report the updated terminal device capabilities to the network device. Furthermore, the network device updates a set of n transmission parameters for the terminal device's current n uplink or downlink transmissions via MAC CE, improving the flexibility of panel switching when deploying panels with asymmetric capabilities on the terminal device side, and shortening the switching latency by dynamically indicating the updated set of transmission parameters via MAC CE.

[0129] In some embodiments, the MAC CE can be used to indicate one or more of the following information:

[0130] SRS resource set index, SRS resource index, number of SRS resources, maximum number of SRS ports, and maximum number of transport layers corresponding to the SRS resource set index.

[0131] For example, MAC CE can be used to indicate one or more of the following: the updated SRS resource set, the SRS resources included in the updated SRS resource set, the number of SRS resources included in the updated SRS resource set, the maximum number of SRS ports for the SRS resources included in the updated SRS resource set, and the maximum number of transport layers corresponding to the updated SRS resource set.

[0132] In some embodiments, the n transmission parameter sets belong to m transmission parameter sets (i.e., the n transmission parameter sets are included in the m transmission parameter sets), and the m SRS resource set indices are configured via Radio Resource Control (RRC) signaling, where m is a positive integer greater than 2 and n ≤ m. For example, a network device can configure m transmission parameter sets for a terminal device via RRC signaling, and further indicate the target transmission parameter set for uplink transmission, i.e., the n transmission parameter sets, via MAC CE.

[0133] In one specific embodiment, m = 4.

[0134] In some embodiments, when a terminal device reports updated terminal device capabilities, the network device can select an updated transmission parameter set from m transmission parameter sets based on the updated terminal device capabilities, and further indicate the updated transmission parameter set to the terminal device via MAC CE. For example, the network device can select an appropriate SRS resource set index based on the updated SRS port number reported by the terminal device. For instance, the maximum number of SRS ports included in the SRS resource set indicated by the selected SRS resource set index is greater than or equal to the number of SRS ports reported by the terminal device.

[0135] In one specific embodiment, the network device can configure more than two sets of SRS resources for different purposes ('codebook' or 'noncodebook') via RRC signaling to adapt to the capabilities of different terminal devices. Furthermore, the SRS resource set associated with the uplink transmission of multiple TRPs / panels (i.e., the SRS resource set used for the uplink transmission of those multiple TRPs / panels) is switched via MAC CE. The network device uses MAC CE to indicate the appropriate SRS resource set, reducing handover latency and improving the flexibility of terminal device implementation.

[0136] In some embodiments, the set of n transmission parameters may be indicated by a single MAC CE, or by n MAC CEs, for example, each of the n MAC CEs may be used to indicate a set of transmission parameters.

[0137] When n=1, for example, in a single TRP / panel uplink transmission, the network device can use a MAC CE to indicate a set of transmission parameters for that uplink transmission.

[0138] When n > 1, for example, for uplink transmission of multiple TRP / panels with multiple DCI scheduling, the network device can indicate the n sets of transmission parameters through n MAC CEs, where one of the n MAC CEs is used to indicate a set of transmission parameters.

[0139] When n > 1, for example, for uplink transmission of multiple TRP / panels with a single DCI schedule, the network device can indicate the set of n transmission parameters through a MAC CE.

[0140] The following describes the structural design of a MAC CE for carrying a set of transmission parameters, with reference to specific embodiments.

[0141] Example 1-1: n sets of transmission parameters are indicated by n MAC CEs.

[0142] In this case, a MAC CE can be used to indicate a set of transmission parameters for one of n uplink transmissions.

[0143] Case 1: This uplink transmission can be a single TRP / panel uplink transmission.

[0144] For example, for uplink transmission of a single TRP / panel, the network device can use a MAC CE to indicate the updated set of transmission parameters for that single TRP / panel uplink transmission. Correspondingly, the terminal device can use a MAC CE to obtain the updated set of transmission parameters for that single TRP / panel uplink transmission.

[0145] Case 2: This uplink transmission can be one of the uplink transmissions in a multi-TRP / panel uplink transmission with multiple DCI scheduling.

[0146] For example, in a multi-TRP / panel uplink transmission with multiple DCI scheduling, the network device can use multiple MAC CEs to indicate the updated set of transmission parameters for each of the multiple uplink transmissions. Correspondingly, the terminal device can use multiple MAC CEs to obtain the updated set of transmission parameters for each of the multiple uplink transmissions.

[0147] For example, for uplink transmissions of multiple TRP / panels with multiple DCI scheduling, the network device may update only the transmission parameter set corresponding to a portion of the uplink transmissions. In this case, the network device can use n MAC CEs to indicate the transmission parameter set corresponding to each of the n uplink transmissions whose transmission parameter set needs to be updated. These n uplink transmissions are the uplink transmissions whose transmission parameter set needs to be updated among all the uplink transmissions to be sent by the terminal device.

[0148] Optionally, in case 2, the MAC CE may include a CORESET pool index and / or TCI state to indicate the uplink transmission to which the set of transmission parameters in the MAC CE applies. For example, the set of transmission parameters in the MAC CE is used for uplink transmissions scheduled by DCI associated with the CORESET pool index and / or TCI state in the MAC CE.

[0149] In some embodiments, a set of transmission parameters may include an SRS resource set index and one or more transmission parameters associated with the SRS resource set index, such as, but not limited to, one or more of the following: maximum number of transport layers, maximum number of transport layers, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0150] In some embodiments, the MAC CE may include an SRS resource set index and one or more transport parameters associated with the SRS resource set index, such as, but not limited to, one or more of the following: maximum transport layer number, maximum transport layer number, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0151] In some embodiments, the MAC CE may further include a serving cell ID and a bandwidth part (BWP ID).

[0152] The following section, with specific examples, illustrates the structural design of a MAC CE used to indicate a set of transmission parameters.

[0153] Example 1:

[0154] In some embodiments, the MAC CE is used to indicate the following information:

[0155] An SRS resource set index and the maximum number of transport layers.

[0156] That is, a set of transport parameters can include an SRS resource set index and a maximum number of transport layers.

[0157] For example, a network device can select a suitable SRS resource set based on the updated SRS port number reported by the terminal device, and further indicate the SRS resource set index corresponding to the SRS resource set to the terminal device, wherein the SRS resource set index is associated with a maximum transport layer number.

[0158] Optionally, this example 1 can be applied to an SRS resource collection that is used for updating codebooks or non-codebook purposes.

[0159] Optionally, this example 1 can be applied to updating the set of transmission parameters corresponding to the uplink transmission of a single TRP / panel.

[0160] As a specific example, the MAC CE may include one or more of the following information:

[0161] Serving cell ID;

[0162] Bandwidth part index (BWP ID);

[0163] SRS Resource Collection Index;

[0164] Maximum number of transport layers;

[0165] Reserved bits.

[0166] The maximum number of transport layers refers to the maximum number of transport layers corresponding to the SRS resource set index.

[0167] Optionally, the SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0168] Using the MAC CE structure provided in Example 1 to indicate the appropriate SRS resource set and maximum number of transport layers can shorten the handover latency of transport parameters and improve the flexibility of terminal device implementation. Indicating the maximum number of transport layers associated with the SRS resource set through this MAC CE is applicable to both codebook-based and non-codebook-based uplink transmissions, thus shortening the handover latency of transport parameters compared to configuring the maximum number of transport layers via RRC.

[0169] Example 2:

[0170] In some embodiments, the MAC CE is used to indicate the following information:

[0171] An SRS resource set index, maximum number of transport layers, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0172] That is, a set of transmission parameters may include an SRS resource set index, the maximum number of transmission layers, the SRS resource index, the number of SRS resources, and the maximum number of SRS ports.

[0173] Wherein, the maximum number of transport layers is the maximum number of transport layers corresponding to the SRS resource set index, the SRS resource index is used to indicate the SRS resources included in the SRS resource set indicated by the SRS resource set index, the number of SRS resources is used to indicate the number of SRS resources included in the SRS resource set indicated by the SRS resource set index, and the maximum number of SRS ports is used to indicate the maximum number of SRS ports of the SRS resources included in the SRS resource set indicated by the SRS resource set index.

[0174] Alternatively, this example 2 can be applied to an SRS resource collection used for updating codebooks.

[0175] Optionally, this example 2 can be applied to updating the set of transmission parameters corresponding to the uplink transmission of a single TRP / panel.

[0176] As a specific example, the MAC CE includes one or more of the following information:

[0177] Serving cell ID, BWP ID, SRS resource set index, maximum number of transport layers, SRS resource index, maximum number of SRS ports, reserved bits.

[0178] Optionally, SRS resource collection indexes can be categorized into periodic SRS resource collection indexes, semi-persistent SRS resource collection indexes, and aperiodic SRS resource collection indexes.

[0179] Compared to Example 1, Example 2 adds an SRS resource index, the number of SRS resources, and the maximum number of SRS ports. By using the MAC CE structure in Example 2 to indicate appropriate transmission parameters, the switching latency of transmission parameters can be shortened, and the flexibility of terminal device implementation can be improved.

[0180] In some embodiments, the MAC CE can also be used to indicate the coreset pool index and / or TCI state, which are used to indicate the uplink transmission to which the set of transport parameters in the MAC CE applies. In this case, the MAC CE can be used to update the set of transport parameters corresponding to one uplink transmission in a multi-TRP / panel uplink transmission of a multi-DCI scheduled system.

[0181] Example 3: The MAC CE is used to indicate the following information:

[0182] An SRS resource set index, maximum number of transport layers, CORESET group index (or TCI state), SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0183] The maximum transport layer number refers to the maximum transport layer number corresponding to the SRS resource set index. The SRS resource index indicates the SRS resources included in the SRS resource set indicated by the index. The number of SRS resources indicates the number of SRS resources included in the SRS resource set indicated by the index. The maximum number of SRS ports indicates the maximum number of SRS ports for the SRS resources included in the SRS resource set indicated by the index. The CORESET group index indicates the CORESET group associated with the uplink transmission applicable to the SRS resource set indicated by the index. The CORESET group associated with the uplink transmission may refer to the DCI scheduling associated with the CORESET group index.

[0184] Example 3 can be used to update the transmission parameter set corresponding to one uplink transmission in a multi-TRP / panel uplink transmission of a multi-DCI scheduled network. Specifically, the uplink transmission to which the transmission parameter set in the MAC CE applies is indicated by the CORESET pool index or TCI state, for example, the uplink transmission of the DCI schedule associated with the CORESET pool index or TCI state.

[0185] As a specific example, the MAC CE includes one or more of the following information:

[0186] Serving cell ID, BWP ID, SRS resource set index, maximum number of transport layers, CORESET group index (or TCI state), SRS resource index, maximum number of SRS ports, reserved bits.

[0187] Optionally, the SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0188] The MAC CE structure illustrated in Example 3 adds a CORESET group index or TCI state, which makes the association between transmission parameters and spatial information clearer, and is beneficial for the terminal device to update the transmission parameters of the uplink transmission corresponding to the spatial information.

[0189] Referring to the specific example in Figure 9, we can illustrate the specific indication method of the transmission parameter set used for uplink transmission.

[0190] For example, in the example of Figure 9, the network device can configure more than two (e.g., four) SRS resource sets via RRC signaling, and further indicate two of these SRS resource sets via MAC CE. The maximum number of SRS ports associated with the SRS resources in these two SRS resource sets are 2 and 4, respectively. When the antenna panels used for uplink transmission of multiple TRPs are switched from antenna panels 1 and 2 to antenna panels 1 and 3, the network device can indicate the updated two SRS resource sets via two MAC CEs (e.g., a first MAC CE and a second MAC CE). For example, the first MAC CE indicates the first SRS resource set with a maximum associated number of 2 SRS ports, and the second MAC CE indicates the second SRS resource set with a maximum associated number of 1 SRS port. The first MAC CE may include a first CORESET group index or a first TCI state, indicating that the transmission parameter set in the first MAC CE is used for uplink transmission to TRP1. The second MAC CE may include a second CORESET group index or a second TCI state, indicating that the transmission parameter set in the second MAC CE is used for uplink transmission to TRP2.

[0191] Alternatively, when the antenna panels used for uplink transmissions of multiple TRPs are switched from antenna panels 1 and 2 to antenna panels 1 and 3, it indicates that the antenna panels used for one uplink transmission have not changed, while the antenna panels used for another uplink transmission have changed. In this case, the network device can update only one set of transmission parameters, that is, only the set of transmission parameters corresponding to the uplink transmission where the antenna panels have changed. For example, the network device can indicate the updated set of transmission parameters through a MAC CE (e.g., a third MAC CE). The third MAC CE indicates a second SRS resource set, with a maximum associated SRS port count of 1. The third MAC CE may include a second CORESET group index or a second TCI state, indicating that the set of transmission parameters in the third MAC CE is used for uplink transmissions sent to TRP2.

[0192] Example 1-2: n sets of transmission parameters are indicated by a single MAC CE.

[0193] In Examples 1-2, where n > 1, MAC CE can be used to indicate multiple sets of transmission parameters.

[0194] In embodiments 1-2, the n uplink transmissions can be uplink transmissions of multiple TRPs / panels scheduled by a single DCI, or uplink transmissions of multiple TRPs / panels scheduled by multiple DCIs. Optionally, the multiple transmission parameter sets correspond one-to-one with the multiple TRPs / panels. For example, the first transmission parameter set is used for uplink transmissions sent to TRP1, and the second transmission parameter set is used for uplink transmissions sent to TRP2.

[0195] In some embodiments, each of the n transmission parameter sets may include an SRS resource set index and one or more transmission parameters associated with that SRS resource set index, such as, but not limited to, one or more of the following: maximum number of transmission layers, maximum number of transmission layers, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0196] For example, the MAC CE may include multiple SRS resource set indices and one or more transmission parameters associated with each SRS resource set index, such as maximum number of transport layers, SRS resource index, number of SRS resources, maximum number of SRS ports, etc.

[0197] In some embodiments, each set of transport parameters may correspond to a coreset pool index and / or TCI state, indicating the uplink transport to which the set of transport parameters is applied. For example, uplink transports applied to DCI scheduling associated with the coreset pool index and / or TCI state.

[0198] In some embodiments, the MAC CE may further include a serving cell ID and a bandwidth part (BWP ID).

[0199] The following section, with specific examples, illustrates the structural design of a MAC CE used to indicate multiple sets of transmission parameters.

[0200] Example 4:

[0201] In some embodiments, the MAC CE is used to indicate the following information:

[0202] There are n SRS resource set indices, and the maximum number of transport layers corresponding to each SRS resource set index among the n SRS resource indices.

[0203] Optionally, this example 4 can be applied to uplink transmissions of multiple TRP / panels with a single DCI schedule.

[0204] As a specific example, the MAC CE includes one or more of the following information:

[0205] Serving cell ID, Bandwidth part (BWP ID), First SRS resource set index, First maximum transmission layer, Second SRS resource set index, Second maximum transmission layer, Reserved bits.

[0206] Wherein, the first SRS resource set index is used to indicate the first SRS resource set, the second SRS resource set index is used to indicate the second SRS resource set, the first maximum transmission layer number is the maximum transmission layer number corresponding to the first SRS resource set index, and the second maximum transmission layer number is the maximum transmission layer number corresponding to the second SRS resource set index.

[0207] Specifically, the first SRS resource set index and the first maximum transmission layer number can be considered to form the first transmission parameter set, and the second SRS resource set index and the second maximum transmission layer number can be considered to form the second transmission parameter set, which are used for different uplink transmissions.

[0208] Optionally, the first SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0209] Optionally, the second SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0210] The MAC CE structure provided in Example 4 indicates the appropriate SRS resource set and maximum transmission layer for multiple uplink transmissions, which can shorten the handover latency of transmission parameters and improve the flexibility of terminal device implementation. Using this MAC CE to indicate the maximum transmission layer associated with the SRS resource set is applicable to both codebook-based and non-codebook-based uplink transmissions, and significantly reduces the handover latency of transmission parameters compared to configuring the maximum transmission layer through RRC.

[0211] Optionally, in Example 4, the MAC CE may also include a CORESET pool index and / or TCI state corresponding to each SRS resource set index among the n SRS resource indices, indicating the uplink transmission to which the SRS resource set index is applied. In this case, Example 4 can be applied to uplink transmissions of multiple TRP / panels with multiple DCI scheduling.

[0212] Example 5:

[0213] In some embodiments, the MAC CE is used to indicate the following information:

[0214] There are n SRS resource set indices, the maximum number of transport layers corresponding to each SRS resource set index in the n SRS resource indices, and the maximum number of SRS ports corresponding to each SRS resource set index in the n SRS resource indices.

[0215] Optionally, this example 5 can be applied to uplink transmissions of multiple TRP / panels with a single DCI schedule.

[0216] As a specific example, the MAC CE includes one or more of the following information:

[0217] Serving cell ID, Bandwidth part (BWP ID), First SRS resource set index, First maximum number of transport layers, First maximum number of SRS ports, Second SRS resource set index, Second maximum number of transport layers, Second maximum number of SRS ports, Reserved bits.

[0218] Wherein, the first SRS resource set index is used to indicate the first SRS resource set, the second SRS resource set index is used to indicate the second SRS resource set, the first maximum transmission layer number is the maximum transmission layer number corresponding to the first SRS resource set index, the second maximum transmission layer number is the maximum transmission layer number corresponding to the second SRS resource set index, the first maximum SRS port number is the maximum SRS port number of the SRS resources included in the first SRS resource set, and the second maximum SRS port number is the maximum SRS port number of the SRS resources included in the second SRS resource set.

[0219] Specifically, the first SRS resource set index, the first maximum number of transmission layers, and the first maximum number of SRS ports can be considered to form the first transmission parameter set, and the second SRS resource set index, the second maximum number of transmission layers, and the second maximum number of SRS ports can be considered to form the second transmission parameter set, which are used for different uplink transmissions.

[0220] Optionally, the first SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0221] Optionally, the second SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0222] The MAC CE structure provided in Example 5 indicates the appropriate SRS resource set, maximum number of transport layers, and maximum number of SRS ports for multiple uplink transmissions, thereby reducing the handover latency of transmission parameters and improving the flexibility of terminal device implementation. Using this MAC CE to indicate the SRS resource set, maximum number of transport layers, and maximum number of SRS ports is applicable to both codebook-based and non-codebook-based uplink transmissions, significantly reducing the handover latency of transmission parameters compared to configuring the maximum number of transport layers via RRC.

[0223] Optionally, in Example 5, the MAC CE may also include a CORESET pool index and / or TCI state corresponding to each SRS resource set index in multiple SRS resource indices, indicating the uplink transmission to which the SRS resource set index is applied. In this case, Example 5 can be applied to uplink transmissions of multiple TRP / panels with multiple DCI scheduling.

[0224] Example 6:

[0225] In some embodiments, the MAC CE is used to indicate the following information:

[0226] The table lists the following: n SRS resource set indices, the maximum number of transport layers corresponding to each SRS resource set index in the n SRS resource set indices, the SRS resource index corresponding to each SRS resource set index in the n SRS resource set indices, the number of SRS resources corresponding to each SRS resource set index in the n SRS resource set indices, and the maximum number of SRS ports corresponding to each SRS resource set index in the n SRS resource set indices.

[0227] Optionally, this example 6 can be applied to uplink transmissions of multiple TRP / panels with a single DCI schedule.

[0228] As a specific example, the MAC CE includes one or more of the following information:

[0229] Serving cell ID, Bandwidth part (BWP ID), First SRS resource set index, First maximum number of transport layers, First SRS resource index, First maximum number of SRS ports, Second SRS resource set index, Second maximum number of transport layers, Second SRS resource index, Second maximum number of SRS ports, Reserved bits.

[0230] Wherein, the first SRS resource set index is used to indicate the first SRS resource set, the second SRS resource set index is used to indicate the second SRS resource set, the first maximum transmission layer number is the maximum transmission layer number corresponding to the first SRS resource set index, the second maximum transmission layer number is the maximum transmission layer number corresponding to the second SRS resource set index, the first SRS resource index is the SRS resource index corresponding to the SRS resources included in the first SRS resource set, the second SRS resource index is the SRS resource index corresponding to the SRS resources included in the second SRS resource set, the first maximum SRS port number is the maximum SRS port number of the SRS resources included in the first SRS resource set, and the second maximum SRS port number is the maximum SRS port number of the SRS resources included in the second SRS resource set.

[0231] Specifically, the first SRS resource set index, the first maximum number of transmission layers, the first SRS resource index, and the first maximum number of SRS ports can be considered to form the first transmission parameter set, and the second SRS resource set index, the second maximum number of transmission layers, the second SRS resource index, and the second maximum number of SRS ports can be considered to form the second transmission parameter set, which are used for different uplink transmissions.

[0232] Optionally, the first SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0233] Optionally, the second SRS resource set index can be a periodic SRS resource set index, a semi-persistent SRS resource set index, or an aperiodic SRS resource set index.

[0234] Compared to Example 4, Example 6 adds an SRS resource index, the number of SRS resources, and the maximum number of SRS ports. By using the MAC CE structure in Example 6 to indicate appropriate transmission parameters, the switching latency of transmission parameters can be shortened, and the flexibility of terminal device implementation can be improved.

[0235] Optionally, in Example 6, the MAC CE may also include a CORESET pool index and / or TCI state corresponding to each SRS resource set index in multiple SRS resource indices, indicating the uplink transmission to which the SRS resource set index is applied. In this case, Example 6 can be applied to uplink transmissions of multiple TRP / panels with multiple DCI scheduling.

[0236] Taking the example in Figure 9 as an example, the indication method of the network device in Embodiments 1-2 is explained. For example, the network device can configure more than two (e.g., four) SRS resource sets through RRC signaling, and further indicate two of the SRS resource sets through MAC CE, wherein the maximum number of SRS ports associated with the SRS resources in the two SRS resource sets are 2 and 4, respectively. When the antenna panels used for the uplink transmission of the multi-TRP are switched from antenna panels 1 and 2 to antenna panels 1 and 3, the network device can indicate the two updated SRS resource sets through a MAC CE. For example, the MAC CE indicates the first SRS resource set with a maximum number of associated SRS ports of 2, and the second SRS resource set with a maximum number of associated SRS ports of 1. The MAC CE may also indicate that the first SRS resource set is associated with the first CORESET group index or the first TCI state, indicating that the transmission parameter set in the first MAC CE is used for uplink transmission to TRP1. Furthermore, the MAC CE may also indicate that the first SRS resource set is associated with the second CORESET group index or the second TCI state, indicating that the transmission parameter set in the second MAC CE is used for uplink transmission to TRP2.

[0237] Adding a CORESET group index or TCI state to the MAC CE structure illustrated in Examples 4-6 makes the association between transmission parameters and spatial information clearer. That is, the CORESET group index or TCI state can indicate the uplink transmission to which the transmission parameters are applied, which is beneficial for the terminal device to update the transmission parameters of the uplink transmission corresponding to the spatial information.

[0238] Examples 1-3: n sets of transmission parameters are indicated by p MAC CEs, where p > 1 and p < n.

[0239] In Examples 1-3, n > 2.

[0240] In embodiments 1-3, the n uplink transmissions may include multiple DCI-scheduled uplink transmissions and / or a single DCI-scheduled uplink transmission.

[0241] As an example, denoted as Scenario 1, the n uplink transmissions can include r uplink transmissions and nr uplink transmissions, where each of the r uplink transmissions is scheduled by a single DCI, and the nr uplink transmissions are multi-TRP / panel uplink transmissions scheduled by a single DCI, where r is a positive integer.

[0242] As another example, denoted as Scenario 2, the n uplink transmissions can include s uplink transmissions and ns uplink transmissions, where s uplink transmissions are uplink transmissions of multiple TRP / panels scheduled by a single DCI, and ns uplink transmissions are uplink transmissions of multiple TRP / panels scheduled by multiple DCIs, where s is a positive integer greater than 1.

[0243] In some embodiments, the correspondence between p MAC CEs and n sets of transmission parameters can be:

[0244] Each of the r out of the p MAC CEs is used to indicate one set of transmission parameters, and each of the other pr MAC CEs is used to indicate multiple sets of transmission parameters, such as two sets of transmission parameters, where r is a positive integer and r is less than p.

[0245] For example, in scenario 1 above, each of the r uplink transmissions is scheduled by a single DCI, so the transmission parameter set corresponding to each of the r uplink transmissions can be indicated by a single MAC CE. The transmission parameter sets corresponding to the other nr uplink transmissions can be indicated by a single MAC CE.

[0246] As a concrete example, with n=3 and p=2, two sets of transmission parameters can be indicated by one MAC CE and one set of transmission parameters can be indicated by another MAC CE.

[0247] In other embodiments, the correspondence between p MAC CEs and n sets of transmission parameters can be:

[0248] Each of the p MAC CEs is used to indicate multiple sets of transmission parameters, for example, to indicate two sets of transmission parameters.

[0249] For example, in scenario 2 above, the set of transmission parameters corresponding to the s uplink transmissions can be indicated by a single MAC CE. The set of transmission parameters corresponding to each of the other ns uplink transmissions can be indicated by a separate MAC CE.

[0250] As a concrete example, with n=4 and p=2, four sets of transmission parameters can be indicated by two MAC CEs, with each MAC CE indicating two sets of transmission parameters.

[0251] In some embodiments, the MAC CE indicating a set of transmission parameters among the p MAC CEs can refer to the MAC CE structure design in Embodiment 1-1, which will not be repeated here for the sake of simplicity.

[0252] In some embodiments, the MAC CE indicating multiple sets of transmission parameters among the p MAC CEs can refer to the MAC CE structure design in Embodiments 1-2, which will not be repeated here for the sake of simplicity.

[0253] Figure 10 is a schematic interactive diagram of the update method based on the transmission parameter set in Embodiment 1 provided by an embodiment of this application. As shown in Figure 10, the following steps may be included:

[0254] S211, the network device configures multiple sets of transmission parameters for the terminal device via RRC signaling. These multiple sets of transmission parameters correspond to different capabilities of the terminal device. For example, these multiple sets of transmission parameters correspond to different antenna port capabilities.

[0255] S212, Terminal devices report their capabilities.

[0256] For example, a terminal device may initially report its capabilities, or, when its capabilities change, report the changed capabilities, or the updated capabilities.

[0257] S213, the network device indicates the target transmission parameter set (corresponding to the n transmission parameter sets mentioned above) via MAC CE.

[0258] For example, network devices can determine the target set of transmission parameters based on the reported capabilities of the terminal devices.

[0259] The target set of transmission parameters can be the initially activated set of transmission parameters, or it can be an updated set of transmission parameters.

[0260] In some specific embodiments, for uplink transmissions of a single TRP / panel, the network device can indicate the target set of transmission parameters for that uplink transmission using a MAC CE. For example, the MAC CE structure shown in Embodiment 1-1 (e.g., Example 1 or Example 2) can be used to indicate the target set of transmission parameters.

[0261] In other specific embodiments, for uplink transmissions of multiple TRPs / panels with multiple DCI scheduling, the network device can indicate the target transmission parameter set for each of the multiple uplink transmissions using multiple MAC CEs. For example, the MAC CE structure shown in Embodiment 1-1 (e.g., Example 3) can be used to indicate the target transmission parameter set, or the MAC CE structure shown in Embodiment 1-2 can be used. Alternatively, the target transmission parameter set can be indicated in the manner described in Embodiments 1-3.

[0262] In some specific embodiments, for uplink transmissions of multiple TRPs / panels scheduled by a single DCI, the network device can indicate the target transmission parameter set for each of the multiple uplink transmissions using a MAC CE. For example, the MAC CE structure shown in Embodiments 1-2 can be used to indicate the target transmission parameter set. Alternatively, the target transmission parameter set can also be indicated in the manner described in Embodiments 1-3.

[0263] S214, The terminal device sends an uplink transmission according to the indicated target transmission parameter set.

[0264] Therefore, in this embodiment 1, the network device indicates the target transmission parameter set through MAC CE, which enables the network device to dynamically activate or update the transmission parameter set used for uplink transmission according to the terminal device capabilities, so that the activated or updated transmission parameter set is more matched with the reported terminal device capabilities, thereby improving the reliability of uplink transmission.

[0265] Example 2: Transmit parameter set via DCI.

[0266] In some embodiments, the n transmission parameter sets belong to k transmission parameter sets, the k transmission parameter sets belong to m transmission parameter sets, the m transmission parameter sets are configured via RRC signaling, and the k transmission parameter sets are activated by MAC CE in the m transmission parameter sets, where m is a positive integer greater than 2, k≤m, and n≤k.

[0267] For example, a network device can configure m sets of transmission parameters for a terminal device via RRC signaling, further indicate the k sets of transmission parameters to be activated via MAC CE, and further indicate the target set of transmission parameters for uplink transmission in the k sets of transmission parameters via DCI.

[0268] In one specific embodiment, m = 4.

[0269] In one specific embodiment, k = 2.

[0270] Therefore, in this embodiment of the application, when dynamically switching between panels used for sending uplink transmissions and those used for receiving downlink transmissions, the network device updates the appropriate set of transmission parameters through DCI, thereby shortening the switching latency and improving the flexibility of the terminal device implementation.

[0271] In some embodiments, when the capabilities of a terminal device change, such as when the terminal device dynamically switches between panels used for sending uplink transmissions and those used for receiving downlink transmissions, the terminal device can report the updated terminal device capabilities to the network device. Furthermore, the network device can activate k transmission parameter sets based on the updated terminal device capabilities, and further indicate the target transmission parameter set (i.e., the n transmission parameter sets) among the k transmission parameter sets to the terminal device via DCI for the terminal device's current n uplink or downlink transmissions. This improves the flexibility of panel switching when deploying panels with asymmetric capabilities on the terminal device side, and shortens the switching latency by dynamically indicating the updated transmission parameter sets via DCI.

[0272] In one specific embodiment, the network device can configure more than two SRS resource sets for different purposes ('codebook' or 'noncodebook') via RRC signaling to adapt to different terminal device capabilities, and then activate k of these SRS resource sets via MAC CE. Further, the DCI indicates the SRS resource set associated with the uplink transmission to be sent (i.e., the SRS resource set used for the uplink transmission to be sent). By using DCI to indicate the appropriate SRS resource set, the network device reduces handover latency and improves the flexibility of terminal device implementation.

[0273] In some embodiments, the set of n transmission parameters may be indicated by a DCI.

[0274] For example, for a single TRP / panel uplink transmission, i.e., n=1, the network device can use a DCI to indicate a set of transmission parameters for that uplink transmission. This DCI can be the DCI that schedules the uplink transmission.

[0275] For example, for uplink transmissions of multiple TRP / panels scheduled by a single DCI, i.e., n > 1, the network device can indicate the set of n transmission parameters through a single DCI. For instance, this single DCI could be the DCI that schedules the multiple uplink transmissions.

[0276] In other embodiments, the set of n transmission parameters may also be indicated by n DCIs, for example, each of the n DCIs is used to indicate a set of transmission parameters.

[0277] For example, for uplink transmissions of multiple TRP / panels scheduled by multiple DCIs (i.e., n > 1), network devices can indicate the n sets of transmission parameters through n DCIs, where one of the n DCIs is used to indicate a set of transmission parameters. For example, a DCI can be the set of transmission parameters used to schedule the uplink transmission.

[0278] In some other embodiments, the set of n transmission parameters may also be indicated by q DCIs, where n > 2, q > 1, and q < n.

[0279] In some embodiments, the correspondence between q DCIs and n sets of transmission parameters can be:

[0280] Each of the s DCIs out of q DCIs is used to indicate one set of transmission parameters, and each of the other pr DCIs is used to indicate multiple sets of transmission parameters, for example, two sets of transmission parameters, where s is a positive integer and s is less than q; or

[0281] Each of the q DCIs is used to indicate multiple sets of transmission parameters, for example, to indicate two sets of transmission parameters, where s is a positive integer and s is less than q.

[0282] As a concrete example, with n=3 and q=2, two sets of transmission parameters can be indicated by one DCI and one set of transmission parameters can be indicated by another DCI.

[0283] As a concrete example, with n=4 and q=2, four sets of transmission parameters can be indicated by two DCIs, where each DCI is used to indicate two sets of transmission parameters.

[0284] The following describes the structural design of a DCI for carrying a set of transmission parameters, with reference to specific embodiments.

[0285] In some embodiments, the DCI includes a first information field indicating a set of x transmission parameters, where x = 1, or x = n, or 1 < x < n.

[0286] Optionally, the first information field can be an existing information field in the DCI (e.g., a reserved field), or it can be a newly added information field; this application does not limit this.

[0287] In some embodiments, the DCI may be DCI format 0_1 ​​or DCI format 0_2.

[0288] Example 2-1: The first information field is used to indicate a set of transmission parameters for an uplink transmission. This example 2-1 can be applied to uplink transmissions with a single TRP / panel and uplink transmissions with multiple TRP / panels scheduled by multiple DCIs.

[0289] In this case, the set of n transmission parameters can be indicated by the first information field in each of the n DCIs.

[0290] Case 1: This uplink transmission can be a single TRP / panel uplink transmission.

[0291] For example, for uplink transmission of a single TRP / panel, the network device can indicate the set of transmission parameters used for the uplink transmission of that single TRP / panel through a DCI, which can be the DCI that schedules the uplink transmission. Correspondingly, the terminal device can obtain the set of transmission parameters used for the uplink transmission of that single TRP / panel through this DCI.

[0292] Case 2: This uplink transmission can be one of the uplink transmissions in a multi-TRP / panel uplink transmission with multiple DCI scheduling.

[0293] For example, in a multi-TRP / panel uplink transmission with multiple DCI scheduling, the network device can use multiple DCIs to indicate the set of transmission parameters for each uplink transmission. Correspondingly, the terminal device can obtain the set of transmission parameters for each uplink transmission through multiple DCIs.

[0294] For example, among the multiple DCIs, there is a first DCI and a second DCI. The first DCI is used to schedule a first uplink transmission, and the second DCI is used to schedule a second uplink transmission. Then, the network device can indicate the set of transmission parameters for the first uplink transmission through the first DCI and the set of transmission parameters for the second uplink transmission through the second DCI.

[0295] Example 2-2: The first information field is used to indicate multiple sets of transmission parameters, each of which is used for an uplink transmission. This Example 2-2 can be applied to uplink transmissions with multiple TRPs / panels scheduled by a single DCI and uplink transmissions with multiple TRPs / panels scheduled by multiple DCIs. Optionally, the multiple sets of transmission parameters correspond one-to-one with the multiple TRPs / panels. For example, the first set of transmission parameters is used for the uplink transmission sent to TRP1, and the second set of transmission parameters is used for the uplink transmission sent to TRP2.

[0296] In some embodiments, the first information field is used to indicate n sets of transmission parameters, each of the n sets of transmission parameters being used for one of the n uplink transmissions, where n is greater than 1.

[0297] For example, for uplink transmissions of multiple TRPs / panels scheduled by a single DCI, the network device can use a single DCI to indicate the set of transmission parameters for each of the multiple uplink transmissions. This single DCI can be the DCI that schedules the multiple uplink transmissions. Correspondingly, the terminal device can obtain the set of transmission parameters for each of the multiple uplink transmissions through this single DCI.

[0298] For example, in uplink transmissions of multiple TRPs / panels with multiple DCI scheduling, the network device can use a single DCI to indicate the set of transmission parameters for each of the multiple uplink transmissions. This single DCI can be one of the multiple DCIs scheduling the multiple uplink transmissions. Correspondingly, the terminal device can use this single DCI to obtain the set of transmission parameters for each of the multiple uplink transmissions.

[0299] In some embodiments, the code points of the first information field are used to indicate one or more sets of transmission parameters.

[0300] In some specific embodiments, the code points of the first information field are used to indicate a set of transmission parameters, corresponding to Embodiment 2-1.

[0301] In some other specific embodiments, the code points of the first information field are used to indicate a set of n transmission parameters, corresponding to Embodiment 2-2.

[0302] In some embodiments, the code points and transmission parameter sets of the first information field have a correspondence. This correspondence may be indicated in the MAC CE.

[0303] For example, each code point in the first information field corresponds to one of the k transmission parameter sets activated by MAC CE.

[0304] For example, each code point in the first information field corresponds to n transmission parameter sets in the k transmission parameter sets activated by MAC CE.

[0305] Optionally, for uplink transmission of a single TRP / panel, each code point in the first information field corresponds to one of the k transmission parameter sets activated by the MAC CE.

[0306] Optionally, for uplink transmission of multiple TRP / panels with multiple DCI scheduling, each code point in the first information field corresponds to one of the k transmission parameter sets or n transmission parameter sets activated by MAC CE.

[0307] Optionally, for uplink transmission of multiple TRP / panels with a single DCI schedule, each code point in the first information field corresponds to n transmission parameter sets in the k transmission parameter sets activated by MAC CE.

[0308] In some embodiments, the first information field includes q bits, totaling 2^q bits. q Each code point can correspond to one or two transmission parameter sets from the k transmission parameter sets activated by MAC CE, where q is a positive integer.

[0309] In some embodiments, the MAC CE is also used to indicate the number n of transmission parameter sets in the k transmission parameter sets activated by the MAC CE corresponding to each code point in the first information field of the DCI.

[0310] For example, MAC CE also includes an indication field for indicating the number n of the transmission parameter sets in the k transmission parameter sets activated by MAC CE for each code point in the first information field of DCI.

[0311] In one specific embodiment, the indication field can be used to indicate whether each code point in the first information field corresponds to one or two sets of k transmission parameter sets activated by the MAC CE.

[0312] The following describes the structural design of the MAC CE in this embodiment 2 with reference to specific embodiments.

[0313] In some embodiments, MAC CE can be used to indicate the following:

[0314] Indexes of the k active SRS resource sets;

[0315] Each SRS resource set index is associated with a set of transmission parameters, such as one or more of the following: maximum number of transmission layers, maximum number of transmission layers, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0316] The correspondence between each code point in the multiple code points of the first information domain and the SRS resource set index (or, the transmission parameter set).

[0317] In one specific embodiment, the MAC CE is used to indicate one or more of the following information:

[0318] The correspondence between each code point in the first information field and the SRS resource set index;

[0319] The maximum transport layer corresponding to the SRS resource collection index.

[0320] As a specific example (denoted as Example 7), MAC CE includes the following information:

[0321] Serving Cell ID, BWP ID, the index of the first SRS resource set corresponding to the first code point, the maximum number of transport layers corresponding to the index of the first SRS resource set, the index of the third SRS resource set corresponding to the second code point, the maximum number of transport layers corresponding to the index of the third SRS resource set, ..., the 2nd... q The second code point q+1 -1SRS resource collection index, 2nd q+1 -1 SRS resource set index corresponds to the maximum number of transport layers, reserved bits.

[0322] In Example 7, it can be assumed that the first SRS resource set index and the maximum number of transport layers corresponding to the first SRS resource set index form a transport parameter set, the third SRS resource set index and the maximum number of transport layers corresponding to the third SRS resource set index form a transport parameter set, ..., the second... q+1 -1SRS Resource Collection Index and the 2nd q+1 The maximum number of transport layers corresponding to the -1SRS resource set index forms a transport parameter set, and one code point corresponds to one transport parameter set.

[0323] In Example 7, the SRS resource set indices corresponding to different code points can be the same or different.

[0324] That is, the first SRS resource set index, the third SRS resource set index, ..., the second q+1 The resource set index values ​​of the -1 SRS resource set index can be the same or different. For example, the first SRS resource set index is i, and the third SRS resource set index can be either the SRS resource set indexed i or the SRS resource set indexed j.

[0325] As another specific example (denoted as Example 8), MAC CE includes the following information:

[0326] Serving Cell ID, BWP ID, the first SRS resource set index corresponding to the first code point, the maximum number of transmission layers corresponding to the first SRS resource set index, the second SRS resource set index corresponding to the first code point, the maximum number of transmission layers corresponding to the second SRS resource set index, the third SRS resource set index corresponding to the second code point, the maximum number of transmission layers corresponding to the third SRS resource set index, the fourth SRS resource set index corresponding to the second code point, the maximum number of transmission layers corresponding to the fourth SRS resource set index, ..., the second... q The second code point q+1 -1SRS resource collection index, 2nd q+1 -1 The maximum transport layer number corresponding to the SRS resource set index, the 2ndq The second code point q+1 SRS Resource Collection Index, Part 2 q+1 Maximum transport layer number corresponding to the SRS resource set index, reserved bits.

[0327] In Example 8, it can be assumed that the first SRS resource set index and the maximum number of transmission layers corresponding to the first SRS resource set index form a transmission parameter set; the second SRS resource set index and the maximum number of transmission layers corresponding to the second SRS resource set index form a transmission parameter set; the third SRS resource set index and the maximum number of transmission layers corresponding to the third SRS resource set index form a transmission parameter set; and so on, up to the second SRS resource set index. q+1 -1SRS Resource Collection Index and the 2nd q+1 -1SRS resource set index corresponds to the maximum transport layer number, forming a transport parameter set, the 2nd q+1 SRS Resource Collection Index and the 2nd q+1 The maximum transport layer number corresponding to the SRS resource set index forms a transport parameter set. One code point corresponds to two transport parameter sets, which are used for different uplink transports.

[0328] In this example 8, the two SRS resource set indices corresponding to the same code point are different.

[0329] That is, the first SRS resource set index is different from the second SRS resource set index, the third SRS resource set index is different from the fourth SRS resource set index, ..., the second... q+1 -1SRS Resource Collection Index and the 2nd q+1 The SRS resource collection index is different.

[0330] In this example 8, the first SRS resource set index corresponding to different code points can be the same or different, and the second SRS resource set index corresponding to different code points can be the same or different.

[0331] That is, the first SRS resource set index, the third SRS resource set index, ..., the second q+1 The resource set index values ​​of the -1 SRS resource set index can be the same or different. For example, the first SRS resource set index is i, and the third SRS resource set index can be either the SRS resource set indexed i or the SRS resource set indexed j.

[0332] Second SRS resource set index, fourth SRS resource set index, ..., 2nd q+1The resource set index values ​​of an SRS resource set index can be the same or different. For example, the second SRS resource set index is i, and the fourth SRS resource set index can be either the SRS resource set indexed i or the SRS resource set indexed j.

[0333] Optionally, in some embodiments, the MAC CE may further include an indicator bit for indicating whether each code point in the first information field corresponds to one or two of the k SRS resource set indices activated by the MAC CE, or two sets of transmission parameters.

[0334] Taking q = 2 bits as an example, the relationship between the code points in the first information field and the set of transmission parameters is shown in the following example:

[0335] Codepoint 00: Indicates the first set of transmission parameters associated with the uplink transmission;

[0336] Codepoint 01: Indicates the second set of transmission parameters associated with the uplink transmission;

[0337] Codepoint 10: Indicates the third set of transmission parameters associated with the uplink transmission;

[0338] Codepoint 11: Indicates the fourth set of transmission parameters associated with the uplink transmission.

[0339] In some embodiments, the number of transmission parameter sets included in a set of transmission parameter sets can be determined by an indication field.

[0340] For example, in Example 7, a set of transmission parameters includes one set of transmission parameters, and in Example 8, a set of transmission parameters includes two sets of transmission parameters.

[0341] In some embodiments, for uplink transmissions of multiple TRP / panels scheduled by multiple DCIs, for example, the multiple DCIs include a first DCI and a second DCI, the first DCI is associated with a first CORSET group index, the second DCI is associated with a second CORSET group index, the first DCI is used to schedule a first uplink transmission, and the second DCI is used to schedule a second uplink transmission.

[0342] In this case, there are three possible ways to update the transmission parameter set:

[0343] Method 1: The set of transmission parameters indicated by the first DCI is used only for uplink transmissions scheduled by the first DCI, or in other words, the set of transmission parameters indicated by the first DCI associated with the first CORSET group index is used only for uplink transmissions associated with the first CORSET group index.

[0344] Method 2: The transmission parameter set indicated by the first DCI is used for uplink transmissions scheduled by the plurality of DCIs (including the first DCI and the second DCI), or the transmission parameter set indicated by the first DCI associated with the first CORSET group index is used for uplink transmissions associated with the first CORSET group index and uplink transmissions associated with the second CORSET group index.

[0345] Method 3: The set of transmission parameters indicated by the first DCI is used for uplink transmissions scheduled by the second DCI, or the set of transmission parameters indicated by the first DCI associated with the first CORSET group index is used for uplink transmissions associated with the second CORSET group index.

[0346] For Method 1, a code point in the first information field of the first DCI corresponds to a set of transmission parameters, for example, an SRS resource set index and an associated set of transmission parameters. Accordingly, the MAC CE can adopt the structure in Example 7.

[0347] For Method 2, a code point in the first information field of the first DCI corresponds to multiple sets of transmission parameters (e.g., n sets of transmission parameters for the n uplink transmissions), such as two SRS resource set indices and a set of transmission parameters associated with each SRS resource set index. Accordingly, the MAC CE can adopt the structure in Example 8.

[0348] For method 3, a code point in the first information field of the first DCI corresponds to a set of transmission parameters, for example, an SRS resource set index and an associated set of transmission parameters. Accordingly, the MAC CE can adopt the structure in Example 7.

[0349] In some embodiments of this application, the method 200 further includes:

[0350] The terminal device receives first indication information from the network device. The first indication information is used to indicate the update method of the transmission parameter set, such as updating using method 1, method 2, or method 3.

[0351] For example, the first indication information is used to indicate whether the set of transmission parameters indicated by the DCI associated with the first CORSET group index is used for the uplink transmission associated with the first CORSET group index, or for the uplink transmission associated with the first CORSET group index and the second CORSET group index, or for the uplink transmission associated with the second CORSET group index.

[0352] In some embodiments, the first indication information may be sent via RRC signaling or MAC CE, or it may be sent via DCI.

[0353] Figure 11 is a schematic interactive diagram of the update method based on the transmission parameter set in Embodiment 2 provided by an embodiment of this application. As shown in Figure 11, it may include the following steps:

[0354] S221, the network device configures m sets of transmission parameters for the terminal device via RRC signaling. These m sets of transmission parameters correspond to different capabilities of the terminal device, where m is a positive integer greater than 2. For example, these multiple sets of transmission parameters correspond to different antenna port capabilities.

[0355] S222, Terminal devices report their capabilities.

[0356] S223, the network device activates a set of k transmission parameters via MAC CE, where k is less than or equal to m.

[0357] The MAC CE can also indicate the correspondence between multiple code points and transmission parameter sets in the first information field of the DCI. For example, it can indicate the SRS resource set index corresponding to each of the multiple code points and a set of transmission parameters associated with the SRS resource set index.

[0358] S224, the network device indicates the set of transmission parameters in the k sets of transmission parameters via DCI, or in other words, the target set of transmission parameters for the current uplink transmission.

[0359] For example, network devices can determine the target set of transmission parameters based on the capabilities of the terminal devices.

[0360] In some specific embodiments, for uplink transmissions of a single TRP / panel, the network device can indicate the target set of transmission parameters for the uplink transmission using the DCI (Distributed Information Code) that schedules the uplink transmission. For example, the code point in the first information field of the DCI can indicate a set of transmission parameters for the uplink transmission. Correspondingly, the terminal device can determine a set of transmission parameters based on the code point in the first information field of the DCI, for example, an SRS (Supply Set Repository) index and associated transmission parameters.

[0361] In other specific embodiments, for uplink transmissions of multiple TRPs / panels scheduled by multiple DCIs, the network device can indicate the set of transmission parameters used by the scheduled uplink transmissions through multiple DCIs. For example, the code point in the first information field of the DCI can indicate a set of transmission parameters used for the uplink transmission scheduled by that DCI. In this case, the MAC CE can adopt the structural design in Example 7. Alternatively, one of the multiple DCIs can indicate the set of transmission parameters corresponding to each of the multiple uplink transmissions. In this case, the MAC CE can adopt the structural design in Example 8.

[0362] In some other specific embodiments, for uplink transmissions of multiple TRP / panels scheduled by a single DCI, the network device can indicate the target transmission parameter set for each of the multiple uplink transmissions using the single DCI, for example, by indicating multiple transmission parameter sets using the code point of the first information field in the DCI. In this case, the MAC CE can adopt the structural design in Example 8.

[0363] S225, the terminal device sends an uplink transmission based on the updated set of transmission parameters.

[0364] Therefore, in this embodiment 2, the network device indicates the target transmission parameter set through DCI, which enables the network device to dynamically activate or update the transmission parameter set used for uplink transmission according to the terminal device capabilities, so that the activated or updated transmission parameter set is more matched with the reported terminal device capabilities, thereby improving the reliability of uplink transmission.

[0365] Example 3: The set of n transmission parameters is configured through the first RRC signaling.

[0366] For example, for a single TRP / panel uplink transmission, the first RRC signaling may include a set of transmission parameters for that uplink transmission.

[0367] For example, for uplink transmissions of multiple TRP / panels, the first RRC signaling may include a set of transmission parameters for the multiple uplink transmissions.

[0368] In some embodiments, the method 200 further includes:

[0369] Within a first time period between receiving the first RRC signaling and the effective date of the transmission parameter set indicated by the first RRC signaling, the terminal device sends an uplink transmission according to the target maximum transmission layer number, wherein the target maximum transmission layer number is the smaller of the maximum supported transmission layer number reported by the terminal device and the maximum transmission layer number configured by the second RRC signaling, and the second RRC signaling is the RRC signaling of the network device configuring the transmission parameter set in the last time.

[0370] For example, as shown in Figure 12, the terminal device reports its updated capabilities to the network device at time t1 and receives the first RRC signaling from the network device at time t2. The first RRC signaling carries the updated set of transmission parameters. Since the transmission parameters configured in the RRC signaling take effect after a certain period of time, the transmission parameters take effect at time t3. Therefore, during the period between t2 and t3, uplink transmission is performed based on the smaller value between the maximum number of transmission layers currently supported by the terminal device and the maximum number of transmission layers configured by the network device last time. This helps to avoid the problem of mismatch between the terminal device capabilities and the RRC configuration and ensures the reliability of uplink transmission.

[0371] In summary, in the embodiments of this application, when a terminal device can report the supported terminal device capabilities for n uplink transmissions to the network device—for example, when the terminal device capabilities for the n uplink transmissions change, specifically when the terminal device dynamically switches between panels used for sending uplink transmissions and those used for receiving downlink transmissions, causing a change in terminal device capabilities—the terminal device can report its capabilities to the network device. Furthermore, the network device indicates n sets of transmission parameters for the n uplink transmissions, wherein each set of n transmission parameters corresponds one-to-one with the n uplink transmissions. That is, the network device can configure a corresponding set of transmission parameters for each uplink transmission. This improves the flexibility of panel switching when deploying panels with asymmetric capabilities on the terminal device side, and by configuring a corresponding set of transmission parameters for each uplink transmission, it helps ensure the performance of each of the n uplink transmissions.

[0372] The method embodiments of this application have been described in detail above with reference to Figures 8 to 12. The device embodiments of this application have been described in detail below with reference to Figures 13 to 17. It should be understood that the device embodiments correspond to the method embodiments, and similar descriptions can be referred to the method embodiments.

[0373] Figure 13 shows a schematic block diagram of a terminal device 400 according to an embodiment of this application. As shown in Figure 13, the terminal device 400 includes:

[0374] Communication unit 410 is used to report terminal device capabilities to network equipment; and

[0375] The terminal device receives a set of n transmission parameters indicated by the network device. These n transmission parameters are used for n uplink transmissions of the terminal device, where n is a positive integer. The transmission parameter set includes one or more combinations of the following parameters:

[0376] The detection reference signal SRS resource set index, SRS resource index, number of SRS resources, maximum number of SRS ports, and maximum number of transmission layers corresponding to the SRS resource set index.

[0377] In some embodiments, the n sets of transmission parameters belong to m sets of transmission parameters, which are configured by Radio Resource Control (RRC) signaling, where m is a positive integer greater than 2 and n ≤ m.

[0378] In some embodiments, the set of n transmission parameters is indicated by a Media Access Control (MAC) control element CE.

[0379] In some embodiments, the n sets of transmission parameters are indicated by n MAC CEs, wherein each of the n MAC CEs is used to indicate one of the n sets of transmission parameters.

[0380] In some embodiments, the n uplink transmissions constitute a single uplink transmission, or the n uplink transmissions include multiple uplink transmissions, and the n uplink transmissions are scheduled by multiple downlink control information (DCI) protocols.

[0381] In some embodiments, the set of n transmission parameters is indicated by a MAC CE.

[0382] In some embodiments, the n uplink transmissions include multiple uplink transmissions, which are scheduled by a single DCI.

[0383] In some embodiments, the set of n transmission parameters is indicated by p MAC CEs, where n > 2, p > 1, and p < n.

[0384] In some embodiments, the n uplink transmissions include multiple uplink transmissions, which are scheduled by multiple DCIs or by a single DCI.

[0385] In some embodiments, the transmission parameter set includes the following parameters:

[0386] An SRS resource set index and the maximum number of transport layers.

[0387] In some embodiments, the transmission parameter set includes the following parameters:

[0388] An SRS resource set index, maximum number of transport layers, and maximum number of SRS ports.

[0389] In some embodiments, the transmission parameter set includes the following parameters:

[0390] An SRS resource set index, maximum number of transport layers, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0391] In some embodiments, the MAC CE is also used to indicate the control resource set CORESET group index, and / or, TCI status.

[0392] In some embodiments, the n transmission parameter sets belong to k transmission parameter sets, the k transmission parameter sets belong to m transmission parameter sets, the m transmission parameter sets are configured via RRC signaling, and the k transmission parameter sets are activated by MAC CE in the m transmission parameter sets, where m is a positive integer greater than 2, k≤m, and n≤k.

[0393] In some embodiments, the set of n transmission parameters is indicated by downlink control information (DCI).

[0394] In some embodiments, the set of n transmission parameters is indicated by a DCI; or,

[0395] The n transmission parameter sets are indicated by n DCIs, with each DCI indicating one transmission parameter set; or

[0396] The set of n transmission parameters is indicated by q DCIs, where n > 2, q > 1, and q < n.

[0397] In some embodiments, the DCI includes a first information field for indicating a set of x transmission parameters, where x = 1, or x = n, or 1 < x < n.

[0398] In some embodiments, the code points of the first information field are used to indicate a set of x transmission parameters.

[0399] In some embodiments, the code points and transmission parameter sets of the first information field have a corresponding relationship, which is obtained from the MAC CE. The MAC CE is used to activate k transmission parameter sets out of m transmission parameter sets.

[0400] In some embodiments, the MAC CE is used to indicate one or more of the following information:

[0401] The correspondence between each code point in the first information field and the SRS resource set index;

[0402] The maximum transport layer corresponding to the SRS resource collection index.

[0403] In some embodiments, the MAC CE is further used to indicate the number of transmission parameter sets in the k transmission parameter sets activated by the MAC CE corresponding to each code point in the first information field of the DCI.

[0404] In some embodiments, when the n uplink transmissions include one uplink transmission, each code point in the first information field corresponds to one of the k transmission parameter sets activated by the MAC CE; or...

[0405] In the case where the n uplink transmissions include multiple uplink transmissions, each code point in the first information field corresponds to one of the k transmission parameter sets or the n transmission parameter sets activated by the MAC CE.

[0406] In some embodiments, the n uplink transmissions include multiple uplink transmissions, which are scheduled by multiple DCIs. The multiple DCIs include a first DCI and a second DCI. The first DCI is associated with a first CORSET group index, and the second DCI is associated with a second CORSET group index. The first CORSET group index is different from the second CORSET group index.

[0407] The first DCI is used to indicate a set of transmission parameters for an uplink transmission associated with the first CORESET group index, or the set of transmission parameters is used for an uplink transmission associated with the second CORESET group index; or.

[0408] The first DCI is used to indicate multiple sets of transmission parameters for uplink transmissions associated with the first CORESET group index and uplink transmissions associated with the second CORESET group index.

[0409] In some embodiments, the communication unit 410 is further configured to:

[0410] The network device receives first indication information, which indicates that the set of transmission parameters indicated by the DCI associated with the first CORSET group index is used for uplink transmission associated with the target CORSET group index, wherein the target CORSET group index includes the first CORSET group index, or includes the first CORSET group index and the second CORSET group index, or includes the second CORSET group index.

[0411] In some embodiments, the first indication information is sent via one or more of the following signaling methods:

[0412] RRC signaling, MAC CE, DCI.

[0413] In some embodiments, the set of n transmission parameters is configured via a first RRC signaling.

[0414] In some embodiments, the communication unit 410 is further configured to:

[0415] Within a first time period between receiving the first RRC signaling and the effective date of the transmission parameter set indicated by the first RRC signaling, uplink transmission is sent according to the target maximum transmission layer number, wherein the target maximum transmission layer number is the smaller of the maximum supported transmission layer number reported by the terminal device and the maximum transmission layer number configured by the second RRC signaling, and the second RRC signaling is the RRC signaling of the network device configuring the transmission parameter set in a previous instance.

[0416] In some embodiments, the terminal device capabilities include:

[0417] The terminal device transmits the antenna port capabilities supported by the n uplink transmissions.

[0418] Optionally, in some embodiments, the communication unit may be a communication interface or transceiver, or an input / output interface of a communication chip or system-on-a-chip.

[0419] It should be understood that the terminal device 400 according to the embodiments of this application may correspond to the terminal device in the method embodiments of this application, and the above and other operations and / or functions of each unit in the terminal device 400 are respectively to implement the corresponding process of the terminal device in the method 200 shown in FIG8 to FIG12. For the sake of brevity, they will not be described in detail here.

[0420] Figure 14 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of Figure 14 includes:

[0421] Communication unit 510 is used to receive terminal device capabilities reported by the terminal device; and

[0422] The terminal device is instructed with a set of n transmission parameters, which are used for n uplink transmissions of the terminal device, where n is a positive integer, and the transmission parameter sets include one or more combinations of the following parameters:

[0423] The detection reference signal SRS resource set index, SRS resource index, number of SRS resources, maximum number of SRS ports, and maximum number of transmission layers corresponding to the SRS resource set index.

[0424] In some embodiments, the n sets of transmission parameters belong to m sets of transmission parameters, which are configured by Radio Resource Control (RRC) signaling, where m is a positive integer greater than 2 and n ≤ m.

[0425] In some embodiments, the set of n transmission parameters is indicated by a Media Access Control (MAC) control element CE.

[0426] In some embodiments, the n sets of transmission parameters are indicated by n MAC CEs, wherein each of the n MAC CEs is used to indicate one of the n sets of transmission parameters.

[0427] In some embodiments, the n uplink transmissions constitute a single uplink transmission, or the n uplink transmissions include multiple uplink transmissions, and the n uplink transmissions are scheduled by multiple downlink control information (DCI) protocols.

[0428] In some embodiments, the set of n transmission parameters is indicated by a MAC CE.

[0429] In some embodiments, the n uplink transmissions include multiple uplink transmissions, which are scheduled by a single DCI.

[0430] In some embodiments, the set of n transmission parameters is indicated by p MAC CEs, where n > 2, p > 1, and p < n.

[0431] In some embodiments, the n uplink transmissions include multiple uplink transmissions, which are scheduled by multiple DCIs or by a single DCI.

[0432] In some embodiments, the transmission parameter set includes the following parameters:

[0433] An SRS resource set index and the maximum number of transport layers.

[0434] In some embodiments, the transmission parameter set includes the following parameters:

[0435] An SRS resource set index, maximum number of transport layers, and maximum number of SRS ports.

[0436] In some embodiments, the transmission parameter set includes the following parameters:

[0437] An SRS resource set index, maximum number of transport layers, SRS resource index, number of SRS resources, and maximum number of SRS ports.

[0438] In some embodiments, the MAC CE is also used to indicate the control resource set CORESET group index, and / or, TCI status.

[0439] In some embodiments, the n transmission parameter sets belong to k transmission parameter sets, the k transmission parameter sets belong to m transmission parameter sets, the m transmission parameter sets are configured via RRC signaling, and the k transmission parameter sets are activated by MAC CE in the m transmission parameter sets, where m is a positive integer greater than 2, k≤m, and n≤k.

[0440] In some embodiments, the set of n transmission parameters is indicated by downlink control information (DCI).

[0441] In some embodiments, the set of n transmission parameters is indicated by a DCI; or,

[0442] The n transmission parameter sets are indicated by n DCIs, with each DCI indicating one transmission parameter set; or

[0443] The set of n transmission parameters is indicated by q DCIs, where n > 2, q > 1, and q < n.

[0444] In some embodiments, the DCI includes a first information field for indicating a set of x transmission parameters, where x = 1, or x = n, or 1 < x < n.

[0445] In some embodiments, the code points of the first information field are used to indicate a set of x transmission parameters.

[0446] In some embodiments, the code points and transmission parameter sets of the first information field have a corresponding relationship, which is obtained from the MAC CE. The MAC CE is used to activate k transmission parameter sets out of m transmission parameter sets.

[0447] In some embodiments, the MAC CE is used to indicate one or more of the following information:

[0448] The correspondence between each code point in the first information field and the SRS resource set index;

[0449] The maximum transport layer corresponding to the SRS resource collection index.

[0450] In some embodiments, the MAC CE is further used to indicate the number of transmission parameter sets in the k transmission parameter sets activated by the MAC CE corresponding to each code point in the first information field of the DCI.

[0451] In some embodiments, when the n uplink transmissions include one uplink transmission, each code point in the first information field corresponds to one of the k transmission parameter sets activated by the MAC CE; or...

[0452] In the case where the n uplink transmissions include multiple uplink transmissions, each code point in the first information field corresponds to one of the k transmission parameter sets or the n transmission parameter sets activated by the MAC CE.

[0453] In some embodiments, the n uplink transmissions include multiple uplink transmissions, which are scheduled by multiple DCIs. The multiple DCIs include a first DCI and a second DCI. The first DCI is associated with a first CORSET group index, and the second DCI is associated with a second CORSET group index. The first CORSET group index is different from the second CORSET group index.

[0454] The first DCI is used to indicate a set of transmission parameters for uplink transmissions associated with the first CORESET group index, or, the set of transmission parameters is used for uplink transmissions associated with the second CORESET group index; or...

[0455] The first DCI is used to indicate multiple sets of transmission parameters for uplink transmissions associated with the first CORESET group index and uplink transmissions associated with the second CORESET group index.

[0456] In some embodiments, the communication unit 510 is further configured to: send first indication information to the terminal device, the first indication information being used to indicate that the set of transmission parameters indicated by the DCI associated with the first CORSET group index is used for the uplink transmission associated with the target CORSET group index, wherein the target CORSET group index includes the first CORSET group index, or includes the first CORSET group index and the second CORSET group index, or includes the second CORSET group index.

[0457] In some embodiments, the first indication information is sent via one or more of the following signaling methods: RRC signaling, MAC CE, and DCI.

[0458] In some embodiments, the terminal device capability includes: the ability of the terminal device to transmit the n uplink transmissions via the supported antenna ports.

[0459] Optionally, in some embodiments, the communication unit may be a communication interface or transceiver, or an input / output interface of a communication chip or system-on-a-chip.

[0460] It should be understood that the network device 500 according to the embodiments of this application may correspond to the network device in the method embodiments of this application, and the above and other operations and / or functions of each unit in the network device 500 are respectively to implement the corresponding process of the network device in the method 200 shown in Figures 8 to 12. For the sake of brevity, they will not be described in detail here.

[0461] Figure 15 is a schematic structural diagram of a communication device 600 provided in an embodiment of this application. The communication device 600 shown in Figure 15 includes a processor 610, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0462] Optionally, as shown in FIG15, the communication device 600 may further include a memory 620. The processor 610 may retrieve and run computer programs from the memory 620 to implement the methods described in the embodiments of this application.

[0463] The memory 620 can be a separate device independent of the processor 610, or it can be integrated into the processor 610.

[0464] Optionally, as shown in FIG15, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0465] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

[0466] Optionally, the communication device 600 may specifically be a network device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0467] Optionally, the communication device 600 may specifically be a mobile terminal / terminal device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0468] Figure 16 is a schematic structural diagram of a chip according to an embodiment of this application. The chip 700 shown in Figure 16 includes a processor 710, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0469] Optionally, as shown in FIG16, chip 700 may further include memory 720. Processor 710 can retrieve and run computer programs from memory 720 to implement the methods in the embodiments of this application.

[0470] The memory 720 can be a separate device independent of the processor 710, or it can be integrated into the processor 710.

[0471] Optionally, the chip 700 may also include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0472] Optionally, the chip 700 may also include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0473] Optionally, the chip can be applied to the network device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0474] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0475] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0476] Figure 17 is a schematic block diagram of a communication system 900 provided in an embodiment of this application. As shown in Figure 17, the communication system 900 includes a terminal device 910 and a network device 920.

[0477] The terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, these will not be elaborated here.

[0478] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0479] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0480] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0481] This application also provides a computer-readable storage medium for storing computer programs.

[0482] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0483] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0484] This application also provides a computer program product, including computer program instructions.

[0485] Optionally, the computer program product can be applied to the network device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0486] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0487] This application also provides a computer program.

[0488] Optionally, the computer program can be applied to the network device in the embodiments of this application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0489] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of this application. When the computer program is run on a computer, it causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0490] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0491] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0492] 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.

[0493] 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.

[0494] 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.

[0495] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0496] 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 of wireless communication, comprising: Comprising: A terminal device reports a terminal device capability to a network device; The terminal device receives n sets of transmission parameters indicated by the network device, the n sets of transmission parameters being used for n uplink transmissions of the terminal device, wherein n is a positive integer, and the set of transmission parameters comprises a combination of one or more of the following parameters: A sounding reference signal (SRS) resource set index, an SRS resource index, a number of SRS resources, a maximum number of SRS ports, and a maximum number of transmission layers corresponding to the SRS resource set index.

2. The method of claim 1, wherein, The n sets of transmission parameters belong to m sets of transmission parameters, and the m sets of transmission parameters are configured by radio resource control (RRC) signaling, wherein m is a positive integer greater than 2, and n≤m.

3. The method according to claim 1 or 2, characterized in that, The n sets of transmission parameters are indicated by a medium access control control element (MAC CE).

4. The method of claim 3, wherein, The n sets of transmission parameters are indicated by n MAC CEs, wherein each of the n MAC CEs is used to indicate one of the n sets of transmission parameters.

5. The method of claim 4, wherein, The n uplink transmissions are one uplink transmission, or the n uplink transmissions include multiple uplink transmissions, and the n uplink transmissions are scheduled by multiple downlink control information (DCI).

6. The method of claim 3, wherein, The n sets of transmission parameters are indicated by one MAC CE.

7. The method of claim 6, wherein, The n uplink transmissions include multiple uplink transmissions, and the multiple uplink transmissions are scheduled by a single DCI.

8. The method of claim 3, wherein, The n sets of transmission parameters are indicated by p MAC CEs, wherein n>2, p>1, and p<n.

9. The method of claim 8, wherein, The n uplink transmissions include multiple uplink transmissions, and the multiple uplink transmissions include multiple DCI-scheduled uplink transmissions and / or single DCI-scheduled uplink transmissions.

10. The method according to any one of claims 1-9, characterized in that, The set of transmission parameters includes the following parameters: One SRS resource set index and a maximum number of transmission layers.

11. The method according to any one of claims 1-9, characterized in that, The set of transmission parameters includes the following parameters: One SRS resource set index, a maximum number of transmission layers, and a maximum number of SRS ports.

12. The method according to any one of claims 1-9, characterized in that, The set of transmission parameters includes the following parameters: One SRS resource set index, a maximum number of transmission layers, an SRS resource index, a number of SRS resources, and a maximum number of SRS ports.

13. The method of any one of claims 3-9, wherein, The MAC CE is also used to indicate a control resource set (CORESET) group index and / or a TCI state.

14. The method of claim 1, wherein, The n sets of transmission parameters belong to k sets of transmission parameters, the k sets of transmission parameters belong to m sets of transmission parameters, the m sets of transmission parameters are configured by RRC signaling, and the k sets of transmission parameters are activated from the m sets of transmission parameters by a MAC CE, wherein m is a positive integer greater than 2, k≤m, and n≤k.

15. The method of claim 1 or 14, wherein, The n sets of transmission parameters are indicated by downlink control information (DCI).

16. The method of claim 15, wherein: The n sets of transmission parameters are indicated by one DCI; or The n sets of transmission parameters are indicated by n DCIs, and each DCI is used to indicate one set of transmission parameters; or The n sets of transmission parameters are indicated by q DCIs, where n>2, q>1, and q is less than n.

17. The method according to claim 15 or 16, characterized in that, The DCI includes a first information field, which is used to indicate x sets of transmission parameters, where x=1, or x=n, or 1 18. The method of claim 17, wherein, The codepoint of the first information field is used to indicate x sets of transmission parameters.

19. The method of claim 18, wherein, The codepoint of the first information field and the set of transmission parameters have a corresponding relationship, which is obtained from a MAC CE, and the MAC CE is used to activate k sets of transmission parameters in m sets of transmission parameters.

20. The method of claim 19, wherein, The MAC CE is used to indicate one or more of the following information: The corresponding relationship between each codepoint in the plurality of codepoints of the first information field and the SRS resource set index; The maximum number of transmission layers corresponding to the SRS resource set index.

21. The method of claim 19 or 20, wherein, The MAC CE is also used to indicate the number of sets of transmission parameters corresponding to each codepoint in the first information field of the DCI in the k sets of transmission parameters activated by the MAC CE.

22. The method of any one of claims 19-21, wherein, In the case where the n uplink transmissions include one uplink transmission, each codepoint in the first information field corresponds to one set of transmission parameters in the k sets of transmission parameters activated by the MAC CE; Or, In the case where the n uplink transmissions include multiple uplink transmissions, each codepoint in the first information field corresponds to one set of transmission parameters or n sets of transmission parameters in the k sets of transmission parameters activated by the MAC CE.

23. The method of any one of claims 15-22, wherein, The n uplink transmissions include multiple uplink transmissions, which are scheduled by multiple DCIs, the multiple DCIs include a first DCI and a second DCI, the first DCI is associated with a first CORESET group index, and the second DCI is associated with a second CORESET group index, where the first CORESET group index is different from the second CORESET group index; The first DCI is used to indicate one set of transmission parameters, which is used for uplink transmission associated with the first CORESET group index, or which is used for uplink transmission associated with the second CORESET group index; or The first DCI is used to indicate multiple sets of transmission parameters, which are used for uplink transmission associated with the first CORESET group index and uplink transmission associated with the second CORESET group index.

24. The method of claim 23, wherein, The method further comprises: The terminal device receives first indication information of the network device, and the first indication information is used to indicate that the set of transmission parameters indicated by the DCI associated with the first CORESET group index is used for uplink transmission associated with a target CORESET group index, where the target CORESET group index includes the first CORESET group index, or includes the first CORESET group index and the second CORESET group index, or includes the second CORESET group index.

25. The method of claim 24, wherein, The first indication information is sent through one or more of the following signaling: RRC signaling, MAC CE, DCI.

26. The method of claim 1, wherein, The n sets of transmission parameters are configured by first RRC signaling.

27. The method of claim 26, wherein, The method further includes: In a first time period between receiving the first RRC signaling and the set of transmission parameters indicated by the first RRC signaling taking effect, the terminal device transmits uplink transmission according to a target maximum number of transmission layers, wherein the target maximum number of transmission layers is a smaller one of a maximum number of transmission layers supported by the terminal device and a maximum number of transmission layers configured by second RRC signaling, and the second RRC signaling is RRC signaling in which the network device last configured a set of transmission parameters.

28. The method of any one of claims 1-27, wherein, The terminal device capability includes: The terminal device transmits an antenna port capability supported by the n uplink transmissions.

29. A method of wireless communication, the method comprising: It includes: The network device receives a terminal device capability reported by a terminal device; The network device indicates n sets of transmission parameters to the terminal device, the n sets of transmission parameters being used for n uplink transmissions of the terminal device, wherein n is a positive integer, and the set of transmission parameters includes a combination of one or more of the following parameters: A set of sounding reference signal (SRS) resource indexes, an SRS resource index, a number of SRS resources, a maximum number of SRS ports, and a maximum number of transmission layers corresponding to the set of SRS resource indexes.

30. The method of claim 29, wherein, The n sets of transmission parameters belong to m sets of transmission parameters, and the m sets of transmission parameters are configured by radio resource control (RRC) signaling, wherein m is a positive integer greater than 2, and n≤m.

31. The method of claim 29 or 30, wherein, The n sets of transmission parameters are indicated by a medium access control (MAC) control element (CE).

32. The method of claim 31, wherein, The n sets of transmission parameters are indicated by n MAC CEs, wherein each of the n MAC CEs is used to indicate one of the n sets of transmission parameters.

33. The method of claim 32, wherein, The n uplink transmissions are one uplink transmission, or the n uplink transmissions include multiple uplink transmissions, and the n uplink transmissions are scheduled by multiple downlink control information (DCI).

34. The method of claim 31, wherein, The n sets of transmission parameters are indicated by one MAC CE.

35. The method of claim 34, wherein, The n uplink transmissions include multiple uplink transmissions, and the multiple uplink transmissions are scheduled by a single DCI.

36. The method of claim 31, wherein, The n sets of transmission parameters are indicated by p MAC CEs, wherein n>2, p>1, and p<n.

37. The method of claim 36, wherein, The n uplink transmissions include multiple uplink transmissions, and the multiple uplink transmissions include multiple DCI-scheduled uplink transmissions and / or single DCI-scheduled uplink transmissions.

38. The method of any one of claims 29-37, wherein, The set of transmission parameters includes the following parameters: one set of SRS resource indexes, and a maximum number of transmission layers.

39. The method of any one of claims 29-37, wherein, The set of transmission parameters includes the following parameters: One set of SRS resource indexes, a maximum number of transmission layers, and a maximum number of SRS ports.

40. The method of any one of claims 29-37, wherein, The set of transmission parameters includes the following parameters: One set of SRS resource indexes, a maximum number of transmission layers, an SRS resource index, a number of SRS resources, and a maximum number of SRS ports.

41. The method of any one of claims 31-37, wherein, The MAC CE is further used to indicate a control resource set (CORESET) group index and / or a TCI state.

42. The method of claim 29, wherein, The n sets of transmission parameters belong to k sets of transmission parameters, the k sets of transmission parameters belong to m sets of transmission parameters, the m sets of transmission parameters are configured by RRC signaling, and the k sets of transmission parameters are activated in the m sets of transmission parameters by a MAC CE, wherein m is a positive integer greater than 2, k≤m, and n≤k.

43. The method of claim 29 or 42, wherein, The n sets of transmission parameters are indicated by a downlink control information (DCI).

44. The method of claim 43, wherein The n sets of transmission parameters are indicated by one DCI; or The n sets of transmission parameters are indicated by n DCIs, each of which is used to indicate one set of transmission parameters; or The n sets of transmission parameters are indicated by q DCIs, wherein n>2, q>1, and q is less than n.

45. The method of claim 43 or 44, wherein, The DCI includes a first information field, and the first information field is used to indicate x sets of transmission parameters, wherein x=1, or x=n, or 1 46. The method of claim 45, wherein, The code point of the first information field is used to indicate x sets of transmission parameters.

47. The method of claim 46, wherein, The code point of the first information field and the set of transmission parameters have a corresponding relationship, and the corresponding relationship is obtained from a MAC CE, and the MAC CE is used to activate k sets of transmission parameters in m sets of transmission parameters.

48. The method of claim 47, wherein, The MAC CE is used to indicate one or more of the following information: The corresponding relationship between each code point in the plurality of code points of the first information field and the SRS resource set index; The maximum number of transmission layers corresponding to the SRS resource set index.

49. The method of claim 47 or 48, wherein, The MAC CE is also used to indicate the number of sets of transmission parameters corresponding to each code point in the first information field of the DCI in the k sets of transmission parameters activated by the MAC CE.

50. The method of any one of claims 47-49, wherein, In the case where the n uplink transmissions include one uplink transmission, each code point in the first information field corresponds to one set of transmission parameters in the k sets of transmission parameters activated by the MAC CE; Or, In the case where the n uplink transmissions include multiple uplink transmissions, each code point in the first information field corresponds to one set of transmission parameters or n sets of transmission parameters in the k sets of transmission parameters activated by the MAC CE.

51. The method of any one of claims 43-50, wherein, The n uplink transmissions include multiple uplink transmissions, and the multiple uplink transmissions are scheduled by multiple DCIs, the multiple DCIs include a first DCI and a second DCI, the first DCI is associated with a first CORESET group index, and the second DCI is associated with a second CORESET group index, wherein the first CORESET group index is different from the second CORESET group index; The first DCI is used to indicate one set of transmission parameters, and the one set of transmission parameters is used for uplink transmission associated with the first CORESET group index, or the one set of transmission parameters is used for uplink transmission associated with the second CORESET group index; or The first DCI is used to indicate multiple sets of transmission parameters, and the multiple sets of transmission parameters are used for uplink transmission associated with the first CORESET group The uplink transmission associated with the first CORESET group index and the uplink transmission associated with the second CORESET group index.

52. The method of claim 51, wherein, The method further includes: The network device sends first indication information to the terminal device, and the first indication information is used to indicate that the transmission parameter set indicated by the DCI associated with the first CORESET group index is used for the uplink transmission associated with the target CORESET group index, wherein the target CORESET group index includes the first CORESET group index, or includes the first CORESET group index and the second CORESET group index, or includes the second CORESET group index.

53. The method of claim 52, wherein, The first indication information is sent through one or more of the following signaling: RRC signaling, MAC CE, DCI.

54. The method of any one of claims 29-53, wherein, The terminal device capability includes an antenna port capability supported by the terminal device for sending the n uplink transmissions.

55. A terminal device, comprising: It includes: A communication unit configured to report a terminal device capability to a network device; and Receive the n transmission parameter sets indicated by the network device, and the n transmission parameter sets are used for n uplink transmissions of the terminal device, wherein n is a positive integer, and the transmission parameter set includes a combination of one or more of the following parameters: A sounding reference signal (SRS) resource set index, an SRS resource index, a number of SRS resources, a maximum number of SRS ports, and a maximum number of transmission layers corresponding to the SRS resource set index.

56. A network device, comprising: It includes: A communication unit configured to receive a terminal device capability reported by a terminal device; and Indicate n transmission parameter sets to the terminal device, and the n transmission parameter sets are used for n uplink transmissions of the terminal device, wherein n is a positive integer, and the transmission parameter set includes a combination of one or more of the following parameters: A sounding reference signal (SRS) resource set index, an SRS resource index, a number of SRS resources, a maximum number of SRS ports, and a maximum number of transmission layers corresponding to the SRS resource set index.

57. A terminal device, comprising: It includes: A processor and a memory for storing a computer program, the processor being configured to invoke and run the computer program stored in the memory to perform the method of any one of claims 1 to 28.

58. A network device, comprising: It includes: A processor and a memory for storing a computer program, the processor being configured to invoke and run the computer program stored in the memory to perform the method of any one of claims 29 to 54.

59. A chip, comprising: It includes: A processor configured to invoke and run a computer program from a memory, so that a device installed with the chip performs the method of any one of claims 1 to 28, or the method of any one of claims 29 to 54.

60. A computer-readable storage medium, characterized in that, A computer program for storing, the computer program causing a computer to perform the method of any one of claims 1 to 28, or the method of any one of claims 29 to 54.

61. A computer program product, characterised in that, It includes computer program instructions that cause a computer to perform the method of any one of claims 1 to 28, or the method of any one of claims 29 to 54.

62. A computer program characterised in that, The computer program causes a computer to perform the method of any one of claims 1 to 28, or the method of any one of claims 29 to 54.

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