Communication method and related apparatus

Abstract

A communication method and a related apparatus. The method comprises: a network device sends at least one piece of first downlink control information (DCI) and at least one piece of second DCI to a terminal device. The network device indicates a sounding reference signal (SRS) closed loop power control adjustment state and a transmission power control command to the terminal device by means of the first DCI and the second DCI, so that the terminal device can still determine the transmission power of the SRS on the basis of the first DCI and the second DCI when the capability of the terminal device is limited.

Description

A communication method and related apparatus

[0001] This application claims priority to Chinese Patent Application No. 202411604757.1, filed with the State Intellectual Property Office of China on November 8, 2024, entitled “A Communication Method and Related Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0003] During communication between the terminal device and the network device, the terminal device determines the transmission power control command (TPC command) and the corresponding SRS closed-loop power control adjustment state based on the downlink control information (DCI). Then, the terminal device determines the SRS transmission power based on the SRS closed-loop power control adjustment state and the transmission power control command.

[0004] When terminal equipment capabilities are limited, network devices cannot simultaneously complete the indication of SRS closed-loop power control adjustment status and transmission power control commands within the same DCI. Determining the SRS transmission power under these circumstances becomes a pressing issue. Summary of the Invention

[0005] This application proposes a communication method and related apparatus in which a network device instructs a terminal device on the SRS closed-loop power control adjustment status and transmission power control command through a first DCI and a second DCI, so that the terminal device can still determine the SRS transmission power according to the first DCI and the second DCI even when its capabilities are limited.

[0006] In a first aspect, embodiments of this application propose a communication method, which is applied to a first device.

[0007] The first device may be a network device, or it may be a device or apparatus with a chip, or a device or apparatus with integrated circuits, or a chip, chip system, module, control unit, circuit, or processor that can be applied to the aforementioned device or apparatus, or at least one of a central unit (CU) or a distributed unit (DU), and this application does not limit the specifics.

[0008] The method includes: sending at least one first downlink control information (DCI) and at least one second DCI, wherein the first DCI indicates a transmission power control command for a sounding reference signal (SRS), and the second DCI indicates the closed-loop power control adjustment state of the SRS corresponding to the transmission power control command of the SRS, and the format of the first DCI is different from that of the second DCI; receiving the SRS, wherein the transmission power of the SRS is determined based on at least one first DCI and at least one second DCI.

[0009] In one example, the first DCI includes a transmit power control command field for the SRS, which indicates the transmit power control command of the SRS. The second DCI includes an SRS closed-loop power control indicator field, which indicates the SRS closed-loop power control adjustment state corresponding to the transmit power control command of the SRS indicated by the first DCI. The above method can also be understood as the SRS closed-loop power control indicator field of the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the first DCI, or, the SRS closed-loop power control indicator field of the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the transmit power control command field of the SRS included in the first DCI.

[0010] In another example, the transmission power control command field of the SRS is 2 bits long, and the closed-loop power control indication field of the SRS is 1 bit long.

[0011] In the above technical solution, the first device indicates the transmission power control command of the SRS and the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS through the first DCI and the second DCI of different formats, so that the second device can still determine the transmission power of the SRS according to the first DCI and the second DCI even when the capability is limited.

[0012] In conjunction with the first aspect, in one possible implementation of the first aspect, the first DCI is DCI format 1_1; the second DCI is DCI format 2_3.

[0013] If the second device only supports the first capability, the supported first capability is: the second device supports DCI format 1_1 indicating transmission power control commands; or the first capability is that the second device can detect the transmission power control command field of DCI format 1_1; or the first capability is that the second device supports two SRS closed-loop power control adjustment states separate from the physical uplink shared channel (PUSCH). Through the above technical solutions, the second device can still determine the SRS transmission power based on the first DCI and the second DCI.

[0014] In conjunction with the first aspect, in one possible implementation of the first aspect, the first DCI is DCI format 2_3; the second DCI is DCI format 1_1.

[0015] If the second device only supports the second capability, the supported second capability is: the terminal device supports DCI format 1_1 to indicate the SRS closed-loop power control adjustment status; or the second capability is that the second device can detect the SRS closed-loop power control indication field of DCI format 1_1; or the second capability is that the second device supports two SRS closed-loop power control adjustment states separate from the PUSCH. Through the above technical solutions, the second device can still determine the SRS transmission power based on the first DCI and the second DCI.

[0016] In conjunction with the first aspect, in one possible implementation of the first aspect, the first DCI and the second DCI are related.

[0017] In one example, the first DCI and the second DCI are associated, meaning that the first DCI and the second DCI are carried in the same time slot.

[0018] In another example, the first DCI and the second DCI are associated, including: the first DCI and the second DCI are carried in the same subframe, or the first DCI and the second DCI are carried on the same one or more symbols, or the first DCI and the second DCI are carried on the same temporal resource.

[0019] The above method enables the second device to determine the transmission power of the SRS based on the correlated first DCI and second DCI, ensuring the accuracy of the determined SRS transmission power. Furthermore, transmitting the first DCI and second DCI within the same time slot eliminates the need for additional communication overhead, thus demonstrating the correlation between the first DCI and second DCI.

[0020] In conjunction with the first aspect, in one possible implementation of the first aspect, sending at least one second DCI includes: sending a second DCI comprising: N SRS closed-loop power control indication fields, where N is an integer greater than or equal to 1.

[0021] For example, the first DCI is DCI format 1_1; the second DCI is DCI format 2_3. The first device sends the second DCI, which includes N SRS closed-loop power control indication fields.

[0022] Specifically, the second DCI includes: a first block and / or a second block, where the first block corresponds to a supplementary uplink (SUL) carrier and the second block corresponds to a non-sUL carrier; or, the first block corresponds to a non-sUL carrier and the second block corresponds to a supplementary uplink SUL carrier. If no supplementary uplink SUL carrier is configured, then the second DCI only includes the first block, which corresponds to a non-sUL carrier.

[0023] In conjunction with the first aspect, in one possible implementation of the first aspect, sending at least one second DCI includes: sending N second DCIs, each second DCI including: a closed-loop power control indication field of an SRS, the closed-loop power control indication field of the SRS indicating the SRS closed-loop power control adjustment state corresponding to the TPC command of the SRS.

[0024] For example, the first DCI is DCI format 2_3; the second DCI is DCI format 1_1. The first device sends N second DCIs, each of which includes a closed-loop power control indication field of one SRS.

[0025] Using the above methods, the second DCI can realize the correspondence between the indicator carrier and the SRS closed-loop power control indicator field in multiple ways, thereby improving the implementation flexibility of the scheme.

[0026] Secondly, embodiments of this application propose a communication method, which is applied to a second device.

[0027] The second device can be a terminal device, or it can be a device or apparatus with a chip, or a device or apparatus with integrated circuits, or a chip, chip system, functional module, control unit, circuit, processor, or integrated circuit that can be applied to the aforementioned device or apparatus. This application does not limit the specific device.

[0028] The method includes: receiving at least one first DCI and at least one second DCI, wherein the first DCI indicates a transmission power control command for a probe reference signal (SRS), and the second DCI indicates the closed-loop power control adjustment state of the SRS corresponding to the transmission power control command of the SRS, wherein the format of the first DCI is different from that of the second DCI; and transmitting the SRS, wherein the transmission power of the SRS is determined based on the first DCI and the second DCI.

[0029] In one example, the first DCI includes an SRS transmission power control command field, which indicates the transmission power control command of the SRS. The second DCI includes an SRS closed-loop power control indicator field, which indicates the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS indicated by the first DCI. The above method can also be understood as the SRS closed-loop power control indicator field of the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the first DCI, or the SRS closed-loop power control indicator field of the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the transmission power control command field of the SRS included in the first DCI.

[0030] In another example, the transmission power control command field of the SRS is 2 bits long, and the closed-loop power control indication field of the SRS is 1 bit long.

[0031] In the above technical solution, the first device indicates the transmission power control command of the SRS and the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS through the first DCI and the second DCI respectively, so that the second device can still determine the transmission power of the SRS according to the first DCI and the second DCI when the capability is limited.

[0032] In conjunction with the second aspect, in one possible implementation of the second aspect, the first DCI is DCI format 1_1; the second DCI is DCI format 2_3.

[0033] If the second device only supports the first capability, the supported first capability is: the second device supports DCI format 1_1 indicating transmission power control commands; or the first capability is that the second device can detect the transmission power control command field of DCI format 1_1; or the first capability is that the second device supports two SRS closed-loop power control adjustment states separate from the Physical Uplink Shared Channel (PUSCH). Through the above technical solutions, the second device can still determine the SRS transmission power based on the first DCI and the second DCI.

[0034] In conjunction with the second aspect, in one possible implementation of the second aspect, the first DCI is DCI format 2_3; the second DCI is DCI format 1_1.

[0035] The second capability supported by the second device is: the terminal device supports DCI format 1_1 to indicate the SRS closed-loop power control adjustment status; or the second capability is that the second device can detect the SRS closed-loop power control indication field of DCI format 1_1; or the second capability is that the second device supports two SRS closed-loop power control adjustment states separate from the PUSCH. Through the above technical solutions, the second device can still determine the SRS transmission power based on the first DCI and the second DCI.

[0036] In conjunction with the second aspect, in one possible implementation of the second aspect, the first DCI and the second DCI are related.

[0037] In one example, the first DCI and the second DCI are associated, including that the first DCI and the second DCI are carried in the same time slot. The first device indicates that the first DCI and the at least one second DCI are associated by transmitting the first DCI and at least one second DCI in the same time slot.

[0038] In another example, the first DCI and the second DCI are associated, including: the first DCI and the second DCI are carried in the same subframe, or the first DCI and the second DCI are carried in the same one or more symbols.

[0039] The above method enables the second device to determine the transmission power of the SRS based on the correlated first DCI and second DCI, ensuring the accuracy of the determined SRS transmission power. Furthermore, transmitting the first DCI and second DCI within the same time slot eliminates the need for additional communication overhead, thus demonstrating the correlation between the first DCI and second DCI.

[0040] In conjunction with the second aspect, in one possible implementation of the second aspect, receiving at least one second DCI includes: receiving a second DCI, the second DCI comprising: N closed-loop power control indication fields of the SRS, the closed-loop power control indication fields of the SRS indicating the closed-loop power control adjustment state of the SRS, where N is an integer greater than or equal to 1.

[0041] For example, the first DCI is DCI format 1_1; the second DCI is DCI format 2_3. The first device transmits the second DCI in DCI format 2_3, which includes N closed-loop power control indication fields of SRS.

[0042] Specifically, the second DCI includes: a first block and / or a second block, the first block corresponding to the supplementary uplink SUL carrier and the second block corresponding to the non-supplementary uplink non-SUL carrier; the first block and / or the second block includes: N closed-loop power control indication fields of SRS.

[0043] In conjunction with the second aspect, in one possible implementation of the second aspect, receiving at least one second DCI includes: receiving N second DCIs, wherein at least one of the N second DCIs includes: a closed-loop power control indication field of an SRS, the closed-loop power control indication field of the SRS indicating the closed-loop power control adjustment state of the SRS, and N is an integer greater than or equal to 1.

[0044] For example, the first DCI is DCI format 2_3; the second DCI is DCI format 1_1. The first device transmits N second DCIs in DCI format 1_1, each second DCI including a closed-loop power control indication field of one SRS.

[0045] In conjunction with the second aspect, in one possible implementation of the second aspect, if the second device sends the SRS closed-loop power control adjustment state to the first state, then the transmission power of the probe reference signal is determined based on the second DCI indicating the first state and the first DCI carried in the same time domain resource unit as the second DCI; or, if the second device sends the SRS closed-loop power control adjustment state to the second state, then the transmission power of the probe reference signal is determined based on the second DCI indicating the second state and the first DCI carried in the same time domain resource unit as the second DCI.

[0046] In the above technical solution, the second device determines which first DCI and second DCI to use to determine the transmission power of the SRS based on its own SRS closed-loop power control adjustment state, so as to ensure the accuracy of the determined transmission power of the SRS.

[0047] In conjunction with the second aspect, in one possible implementation of the second aspect, the method further includes: determining the reception timing of the first DCI and the second DCI as: K times before the transmission timing i of the second device sending the SRS. SRS,min K are symbols, where i is an integer greater than or equal to 1, and K is a number. SRS,min It is an integer greater than or equal to 1, or, the timing of the second device transmitting the SRS before i-i0, K. SRS,min (i-i0)-1 symbols were transmitted to the SRS before the time i of the K-th symbol transmission. SRS,min There are two symbols, i0 is an integer greater than or equal to 1, and i0 is less than i.

[0048] In the above technical solution, the second device receives the first DCI and the second DCI at different receiving times in different scenarios to ensure that the second device can successfully receive the first DCI and the second DCI.

[0049] Thirdly, embodiments of this application propose a communication system comprising a first device and a second device. The communication system includes: the first device sending at least one first DCI and at least one second DCI to the second device, wherein the first DCI indicates a transmission power control command for a sounding reference signal (SRS), and the second DCI indicates the closed-loop power control adjustment state of the SRS corresponding to the transmission power control command; the formats of the first DCI and the second DCI are different. The second device determines the transmission power of the SRS based on the at least one first DCI and the at least one second DCI. Then, the second device transmits the SRS based on the transmission power of the SRS.

[0050] In conjunction with the third aspect, in one possible implementation of the third aspect, the communication system performs the methods shown in the first and / or second aspects described above, which will not be elaborated here.

[0051] Fourthly, this application provides a communication device, which is a first device. The device includes a transceiver module and a processing module. The constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the first aspect and achieve the corresponding technical effects. For details, please refer to the first aspect, which will not be repeated here.

[0052] Fifthly, this application provides a communication device, which is a second device. The communication device includes a transceiver module and a processing module. The constituent modules of the communication device can also be used to execute the steps performed in various possible implementations of the second aspect and achieve the corresponding technical effects. For details, please refer to the second aspect, which will not be repeated here.

[0053] In a sixth aspect, this application provides a communication device including at least one processor coupled to a memory; the memory is used to store a program or instructions; the at least one processor is used to execute the program or instructions to cause the device to implement the method described in any possible implementation of any of the first aspects. Optionally, the communication device may include the memory.

[0054] In a seventh aspect, this application provides a communication device including at least one logic circuit and an input / output interface; the logic circuit is configured to perform the method described in any possible implementation of any of the preceding first aspects.

[0055] In an eighth aspect, this application provides a communication device including at least one processor coupled to a memory; the memory is used to store a program or instructions; the at least one processor is used to execute the program or instructions to enable the communication device to implement the method described in any possible implementation of any of the preceding second aspects. Optionally, the communication device may include the memory.

[0056] In a ninth aspect, this application provides a communication device including at least one logic circuit and an input / output interface; the logic circuit is configured to perform the method described in any possible implementation of any of the preceding second aspects.

[0057] In a tenth aspect, this application provides a communication system that includes the first device and / or the second device described above.

[0058] Eleventhly, this application provides a computer-readable storage medium for storing one or more computer-executable instructions, which, when executed by a processor, perform the method as described in any possible implementation of any of the first and / or second aspects above.

[0059] In a twelfth aspect, this application provides a computer program product (or computer program) that, when executed by a processor, performs the method described in any possible implementation of either the first aspect or the second aspect.

[0060] In a thirteenth aspect, this application provides a chip or chip system including at least one processor for supporting a communication device in implementing the method described in any possible implementation of any of the first and / or second aspects described above.

[0061] In one possible design, the chip or chip system may further include a memory for storing program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices. Optionally, the chip system may also include interface circuitry that provides program instructions and / or data to the at least one processor.

[0062] The technical effects of any of the design methods in aspects three through thirteen can be found in the technical effects of the different design methods in aspects one through two above, and will not be repeated here. Attached Figure Description

[0063] Figure 1 is a schematic diagram of the architecture of the communication system 1000 used in the embodiments of this application;

[0064] Figure 2 is a schematic diagram of a communication system according to an embodiment of this application;

[0065] Figure 3 is a schematic flowchart of an embodiment of a communication method in this application;

[0066] Figure 4 is a schematic diagram of the second device determining the timing of receiving the first DCI and the second DCI in an embodiment of this application;

[0067] Figure 5 is a structural schematic diagram of a communication device according to an embodiment of this application;

[0068] Figure 6 is another structural schematic diagram of the communication device according to an embodiment of this application;

[0069] Figure 7 is another structural schematic diagram of the communication device according to an embodiment of this application. Detailed Implementation

[0070] References to "one embodiment" or "some embodiments" as described in this application mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0071] In the description of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c. Where a, b, and c can be single or multiple.

[0072] First, the communication system involved in the embodiments of this application is introduced. This application can be applied to long-term evolution (LTE) systems, new radio (NR) systems, or future communication systems after 5G. The communication system includes at least one of network equipment or terminal equipment.

[0073] Figure 1 is a schematic diagram of the architecture of the communication system 1000 used in the embodiments of this application.

[0074] As shown in Figure 1, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one network device (also understood as an access network device, as shown in Figure 1, 110a and 110b), and at least one terminal (also understood as the terminal device described above, as shown in Figure 1, 120a-120j). Furthermore, the network device (or wireless network device) may be a macro base station (as shown in Figure 1, 110a), a micro base station or an indoor station (as shown in Figure 1, 110b), a relay node or a donor node, etc. It is understood that all or part of the functions of the network device in this application may also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The embodiments of this application do not limit the specific technology or specific device form adopted by the wireless network device.

[0075] For ease of description, the communication system illustrated in Figure 1 is described using the network device as a base station and the terminal device as a terminal. It is understood that when the communication system includes an integrated access and backhaul (IAB) network, the base station can be an IAB node. It should be noted that in the embodiments of this application, the base station and the network device can be interchanged.

[0076] In this application, the base station and the terminal can be fixed or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, on water, or in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base station and the terminal.

[0077] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminals 120j that access the wireless access network 100 through 120i, terminal 120i is a base station. However, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.

[0078] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be achieved using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0079] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0080] In this application, the base station sends downlink signals or downlink information to the terminal, with the downlink information carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, with the uplink information carried on the uplink channel. To communicate with the base station, the terminal needs to establish a radio connection on a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with this serving cell, it is also susceptible to interference from signals from neighboring cells.

[0081] The technical solution of this application can be applied to cellular communication systems related to the 3rd Generation Partnership Project (3GPP). For example, 4th generation (4G) communication systems, 5G communication systems, and communication systems beyond the 5th generation. For example, future communication systems. For example, 4th generation communication systems may include Long Term Evolution (LTE) communication systems. 5th generation communication systems may include New Radio (NR) communication systems. The technical solution of this application can also be applied to Wireless Fidelity (WiFi) systems, communication systems supporting the convergence of multiple wireless technologies, device-to-device (D2D) systems, or vehicle-to-everything (V2X) communication systems.

[0082] The terminal equipment and network equipment involved in this application are described below.

[0083] Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), fixed wireless access (FWA), customer premises equipment (CPE), etc., refers to devices that include wireless communication capabilities (providing voice / data connectivity to users). Examples include handheld devices with wireless connectivity, in-vehicle devices, and machine-type communication (MTC) terminals. Currently, terminal devices can include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving (e.g., drones, vehicles), wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. For example, wireless terminals in self-driving can be drones, helicopters, or airplanes. For example, wireless terminals in vehicle-to-everything (V2X) can be in-vehicle equipment, vehicle-mounted equipment, in-vehicle modules, vehicles, or ships. Wireless terminals in industrial control can be cameras, robots, or robotic arms. Wireless terminals in smart homes can be televisions, air conditioners, robot vacuums, speakers, or set-top boxes. The terminal device can also be a device or module that is connected to the communication system shown above and has corresponding communication functions. The terminal device usually contains a communication module, circuit or chip that performs the corresponding communication function, and the terminal device is also configured with program instructions for performing the corresponding communication function.

[0084] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus with integrated circuitry, or a chip, chip system, module, or control unit in the device or apparatus shown above; this application does not limit the specific application. It should also be noted that in this application, when referring to a terminal device, it can refer to the terminal device itself, or to the chip, functional module, or integrated circuit within the terminal device that performs the method provided in this application; this application does not limit the specific application. A network device is an apparatus deployed in a wireless access network to provide wireless communication functions for terminal devices. A network device can connect a terminal device to a radio access network (RAN) node in a wireless network; it can also be called an access network device, RAN entity, access node, or network node, etc.

[0085] Specifically, network equipment can be network equipment for cellular systems related to the 3rd Generation Partnership Project (3GPP). For example, 4G communication systems, 5G communication systems, or future communication systems. Network equipment can also be network equipment in open RAN (open RAN, O-RAN, or ORAN) or cloud radio access network (CRAN). Alternatively, network equipment can also be network equipment in a communication system resulting from the integration of two or more of the above communication systems.

[0086] Network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), access point (AP) in wireless fidelity (WIFI) systems, macro base station, micro base station, wireless relay node, donor node, radio controller in CRAN scenarios, wireless backhaul node, transmission point (TP), or transmission and reception point (TRP), etc., and can also be network equipment in 5G mobile communication systems. For example, next-generation base station (gNB) in NR systems, TRP, TP; or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system; or, network equipment can also be network nodes constituting a gNB or transmission point. Examples include centralized unit (CU), distributed unit (DU), centralized unit control plane (CU-CP), centralized unit user plane (CU-UP), or radio unit (RU). CUs and DUs can be separate entities or included in the same network element, such as a BBU. RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs). Alternatively, network equipment can be servers, wearable devices, vehicles, or in-vehicle equipment. For example, network equipment in V2X technology can be roadside units (RSUs). It should be understood that the aforementioned TRP can be a device or module located on the network side of the communication system and possessing corresponding communication functions. The TRP typically contains communication modules, circuits, or chips that perform the corresponding communication functions. The TRP can also be configured with program instructions for the corresponding communication functions.

[0087] It should be noted that CU (or CU-CP and CU-UP), DU, or RU may have different names in different systems, but those skilled in the art will understand their meaning. For example, in an open radio access network (ORAN) system, CU can also be called an open centralized unit (O-CU) or an open CU, DU can also be called an open distributed unit (O-DU), CU-CP can also be called an open centralized unit control plane (O-CU-CP), CU-UP can also be called an open centralized unit user plane (O-CU-UP), and RU can also be called an open radio unit (O-RU). This application does not impose any specific limitations on these details. Any of the units CU, CU-CP, CU-UP, DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0088] Optionally, for network elements in the ORAN system, each network element can implement the protocol layer functions shown in Table 1 below.

[0089] Table 1

[0090] It should be noted that in the ORAN system, the network device in this application can be one or more network elements listed in Table 1 above. For example, after the CU determines the first downlink control information (DCI) and at least one second DCI, the CU sends the first DCI and at least one second DCI to the terminal device via the DU and RU. The RU receives the SRS from the terminal device and sends the SRS to the CU via the DU. This application does not limit the CU to generating and sending the first DCI and / or at least one second DCI. The first DCI and / or at least one second DCI can also be generated by the DU and sent to the terminal device via the RU, or some information can be generated by the CU and sent to the terminal device via the DU and RU, and some information can be generated by the DU and sent to the terminal device via the RU. Similarly, the SRS received by the RU can be sent to the DU or sent to the CU via the DU.

[0091] The architecture of the CU and DU of a network device is described below. A network device includes at least one CU and at least one DU. Optionally, the network device may also include at least one RU.

[0092] The following example uses a network device consisting of a CU and a DU. The CU has some core network functions and can include CU-CP and CU-UP. The CU and DU can be configured according to the protocol layer functions of the wireless network they implement. For example, the CU may be configured to implement the functions of at least one layer of the Packet Data Convergence Protocol (PDCP) layer and above (e.g., at least one of the RRC or SDAP layers). The DU may be configured to implement the functions of at least one layer of the protocol layer below the PDCP layer (e.g., at least one of the RLC, MAC, or physical (PHY) layers). Alternatively, the CU may be configured to implement the functions of at least one layer of the protocol layer above the PDCP layer (e.g., at least one of the RRC or SDAP layers), and the DU may be configured to implement the functions of at least one layer of the protocol layer below the PDCP layer (e.g., at least one of the RLC, MAC, or PHY layers).

[0093] When a CU includes CU-CP and CU-UP, CU-CP is used to implement the control plane functions of the CU, and CU-UP is used to implement the user plane functions of the CU. For example, when a CU is configured to implement the functions of the PDCP layer, RRC layer, and SDAP layer, CU-CP is used to implement the RRC layer functions and the control plane functions of the PDCP layer, and CU-UP is used to implement the SDAP layer functions and the user plane functions of the PDCP layer.

[0094] The CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements can be access and mobility function (AMF) network elements, such as the AMF in a 5G system. The AMF is responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover.

[0095] CU-UP can interact with network elements in the core network used to implement user plane functions. These network elements, such as the user plane function (UPF) in a 5G system, are responsible for forwarding and receiving data in terminal devices.

[0096] Optionally, the ORAN architecture also includes a RAN Intelligent Controller (RIC) module.

[0097] It should be noted that the access network equipment can be a device or apparatus with a chip, or a device or apparatus with integrated circuits, or a chip, chip system, module, or control unit in the aforementioned device or apparatus; this application does not impose any specific limitation. It should also be noted that in this application, the term "access network equipment" can refer to the access network equipment itself, or to the chip, functional module, or integrated circuit within the access network equipment that performs the method provided in this application; this application does not impose any specific limitation.

[0098] It should be noted that:

[0099] In the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "sending information to a terminal" can be understood as the destination of the information being the terminal device, which may include sending directly via the air interface or sending indirectly via the air interface from other units or modules. "Receiving information from a network device" can be understood as the source of the information being the network device, which may include receiving directly from the network device via the air interface or receiving indirectly from the network device via the air interface from other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0100] In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via buses, wiring, or interfaces.

[0101] It is understandable that information may undergo processing, such as encoding and modulation, between the source and destination, but the destination can still understand the valid information from the source. Similar statements in this application can be interpreted in a similar way and will not be elaborated further.

[0102] In the embodiments of this application, "instruction" can include direct and indirect instructions, as well as explicit and implicit instructions. The information indicated by a certain piece of information (hereinafter referred to as instruction information) is called the information to be instructed. In specific implementation, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is an association between the other information and the information to be instructed; or it can only indicate a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction can be implemented by using a pre-agreed (e.g., protocol predefined) arrangement of various information, thereby reducing the instruction overhead to a certain extent. This application does not limit the specific method of instruction. It is understood that for the sender of the instruction information, the instruction information can be used to indicate the information to be instructed; for the receiver of the instruction information, the instruction information can be used to determine the information to be instructed.

[0103] First, let me introduce some of the technical concepts involved in this application.

[0104] 1. Detect the transmission power of the reference signal (SRS).

[0105] The transmission power of the SRS transmitted by the terminal device satisfies the following formula:

[0106] Among them, P CMAX,f,c (i) represents the maximum transmission power of the terminal device. The SRS expected received power configured by the network device for the terminal device, μ is the subcarrier spacing, and M is the network device's configuration. SRS,b,f,c (i) is the bandwidth of the physical uplink control channel (PUCCH), α SRS,b,f,c (q s ) represents the road loss factor, PL b,f,c (q d ) is the UE based on the downlink reference signal q d The measured road loss is in decibels (dB), h b,f,c (i,l) represents the closed-loop power control adjustment state.

[0107] 2. Closed-loop power control adjustment status.

[0108] Network devices configure SRS resource sets to terminal devices via RRC parameters, which include SRS power control adjustment states (srs - Power Control Adjustment States). These SRS power control adjustment states indicate whether the closed-loop power adjustment of the SRS resource set is separated from the Physical Uplink Shared Channel (PUSCH). This closed-loop power adjustment can also be referred to as closed-loop power control.

[0109] If the value of “srs-PowerControlAdjustmentStates” is “sameAsFci1” or “sameAsFci2”, then the SRS closed-loop power control adjustment state is the same as one of the two closed-loop power control adjustment states of the PUSCH, or the SRS closed-loop power control adjustment state reuses the PUSCH closed-loop power control adjustment state. If the value of “srs-PowerControlAdjustmentStates” is “separateClosedLoop”, then the SRS closed-loop power control adjustment state is separated from the PUSCH closed-loop power control adjustment state, that is, the SRS closed-loop power control adjustment state and the PUSCH closed-loop power control adjustment state are independent of each other.

[0110] When the SRS closed-loop power control adjustment state reuses the PUSCH closed-loop power control adjustment state, h b,f,c (i,l)=δ b,f,c (i,l), δ b,f,c (i,l) represents the current PUSCH closed-loop power control adjustment state. When the terminal device is configured with the higher-level parameter twoPUSCH-PC-AdjustmentStates, δ b,f,c In (i,l), the value of l ranges from {0,1}. Here, l=0 corresponds to the first PUSCH closed-loop power control adjustment state, and l=1 corresponds to the second PUSCH closed-loop power control adjustment state. When the terminal device is not configured with the higher-layer parameter "twoPUSCH-PC-AdjustmentStates", δ b,f,c The value of l in (i,l) is in the range of {0}, which corresponds to the first PUSCH closed-loop power control adjustment state.

[0111] It should be noted that the closed-loop power control adjustment state can also be replaced with: closed-loop power control, closed-loop power control adjustment amount, closed-loop power control adjustment state, or closed-loop power control adjustment state index. This application embodiment does not limit this.

[0112] 3. Method for network devices to indicate the SRS closed-loop power control adjustment status to terminal devices.

[0113] In cases where the SRS closed-loop power control adjustment state is separated from the PUSCH closed-loop power control adjustment state, the network device indicates the SRS closed-loop power control adjustment state to the terminal device through downlink control information (DCI) format 2_3.

[0114] DCI format 2_3 belongs to group-common DCI, and can indicate control information to multiple terminal devices. DCI format 2_3 includes multiple blocks, and each terminal device corresponds to one or more blocks. The terminal device determines the starting position of the control information in DCI format 2_3 corresponding to that terminal device based on the higher-level parameter "startingBitOfFormat2-"3 or the higher-level parameter "startingBitOfFormat2-3SUL-v1530".

[0115] If the value of the higher-layer parameter "srs-TPC-PDCCH-Group" is "typeA" (i.e., srs-TPC-PDCCH-Group = typeA), or if the SRS closed-loop power control adjustment state is separated from the PUSCH closed-loop power control adjustment state, each terminal device corresponds to one or two blocks in DCI format 2_3. One block in DCI format 2_3 corresponding to the terminal device corresponds to a supplementary uplink (SUL) carrier, and the other block corresponds to a non-supplementary uplink (non-SUL) carrier. Each block includes an optional SRS request field and N transmission power control command (TPC command) fields. The SRS request field is used to trigger aperiodic SRS transmission, and the TPC command fields are used to determine the SRS transmission power. Each TPC command field applies to one uplink carrier configured by the higher-layer parameter cc-IndexInOneCC-Set. The TPC command field can also be called the SRS TPC command field.

[0116] If the higher-layer parameter "srs-TPC-PDCCH-Group" is set to "typeB" (i.e., srs-TPC-PDCCH-Group = typeB), or if the SRS closed-loop power control adjustment state is separated from the PUSCH closed-loop power control adjustment state (in the absence of an SUL carrier), each terminal device corresponds to one or more blocks in DCI format 2_3. Each block includes an optional SRS request field and a TPC command field. Each block applies to one uplink carrier.

[0117] Specifically, based on the existing TPC command field in DCI format 2_3, a corresponding SRS closed-loop power control indicator field is added. If the SRS closed-loop power control indicator field has a first value, the terminal device determines that the TPC command indicated by this TPC command field corresponds to a first SRS closed-loop power control adjustment state; if the SRS closed-loop power control indicator field has a second value, the terminal device determines that the TPC command indicated by this TPC command field corresponds to a second SRS closed-loop power control adjustment state. The TPC command field is 2 bits long, and the SRS closed-loop power control indicator field is 1 bit long.

[0118] The aforementioned terminal device determines that the TPC command corresponds to the first SRS closed-loop power control adjustment state. This can also be understood as the terminal device determining the specific starting position of the DCI format 2_3 indication information based on the higher-layer parameter startingBitOfFormat2-3 or startingBitOfFormat2-3SUL-v1530. This indication information includes a TPC command field and an SRS closed-loop power control indication field. The TPC command field associated with the SRS closed-loop power control indication field is used to adjust the first SRS closed-loop power control adjustment state.

[0119] The aforementioned terminal device determines that the TPC command corresponds to the second SRS closed-loop power control adjustment state. This can also be understood as the terminal device determining the specific starting position of the DCI format 2_3 indication information based on the higher-layer parameter startingBitOfFormat2-3 or startingBitOfFormat2-3SUL-v1530. This indication information includes a TPC command field and an SRS closed-loop power control indication field. The TPC command field associated with the SRS closed-loop power control indication field is used to adjust the second SRS closed-loop power control adjustment state.

[0120] Because DCI format 2_3 requires multiplexing by multiple terminal devices, and the number of information bits in DCI format 2_3 is no more than that in DCI format 1_0, the capacity of DCI format 2_3 is limited. Therefore, the efficiency of SRS power control through DCI format 2_3 is relatively low. To improve the efficiency of SRS power control, the NR standard proposes to indicate SRS power control in DCI format 1_1. Specifically, DCI format 1_1 includes a TPC command field and an SRS closed-loop power control indication field. The TPC command field indicates the TPC command, while the SRS closed-loop power control indication field is used to indicate the SRS closed-loop power control adjustment status corresponding to the TPC command.

[0121] However, the terminal device needs to support the capability corresponding to the TPC command field in order to determine the TPC command through DCI format 1_1, which includes the TPC command field. Similarly, the terminal device needs to support the capability corresponding to the SRS closed-loop power control indication field in order to determine the SRS closed-loop power control adjustment state corresponding to the TPC command field through DCI format 1_1, which includes the SRS closed-loop power control indication field. When the terminal device only supports one of the above capabilities, it cannot determine the SRS closed-loop power control adjustment state corresponding to the TPC command indicated by the TPC command field based on DCI format 1_1, which includes both the TPC command field and the SRS closed-loop power control indication field. Consequently, the terminal device cannot determine the SRS transmission power based on DCI format 1_1.

[0122] To address the aforementioned technical problems, this application proposes a communication method and related apparatus. The method includes: transmitting a first downlink control information (DCI) and at least one second DCI, wherein the first DCI indicates a transmission power control command for a sounding reference signal (SRS), and the second DCI indicates the SRS closed-loop power control adjustment state corresponding to the transmission power control command; the formats of the first DCI and the second DCI are different; and receiving the SRS. By using the different formats of the first and second DCIs to indicate the transmission power control command of the SRS and the corresponding SRS closed-loop power control adjustment state, the terminal device can still determine the transmission power of the SRS based on the first and second DCIs even under limited capabilities.

[0123] First, the communication system involved in this application is introduced. Please refer to Figure 2, which is a schematic diagram of a communication system according to an embodiment of this application. The communication system includes a first device and a second device, wherein the first device and the second device are wirelessly connected. The first device may be referred to as a first network device or a first access network device, and can be a network device or a chip or chip system applicable to network devices. The second device can be a terminal device or a chip or chip system applicable to terminal devices.

[0124] Based on the communication system described above, the communication method proposed in this application will now be introduced. Please refer to Figure 3, which is a schematic flowchart of an embodiment of the communication method in this application. The communication method proposed in this application includes:

[0125] 301. The second device sends its capability information to the first device.

[0126] Step 301 is an optional step.

[0127] In step 301, the second device may send capability information of the second device to the first device. The capability information of the second device includes: a first capability supported by the second device, or a second capability supported by the second device.

[0128] The first capability supported by the second device is: the second device supports DCI format 1_1 indicating transmission power control commands; or the first capability is that the second device can detect the transmission power control command field of DCI format 1_1; or the first capability is that the second device supports two SRS closed-loop power control adjustment states that are separate from the physical uplink shared channel (PUSCH).

[0129] Taking the second device as a terminal device as an example, the second capability supported by the second device is: the terminal device supports DCI format 1_1 to indicate the SRS closed-loop power control adjustment status; or the second capability is that the second device can detect the SRS closed-loop power control indication field of DCI format 1_1; or the second capability is that the second device supports two SRS closed-loop power control adjustment states that are separate from PUSCH.

[0130] 302. The first device sends at least one first DCI and at least one second DCI to the second device. The first DCI indicates the transmission power control command of the SRS, and the second DCI indicates the closed-loop power control adjustment status of the SRS.

[0131] In step 302, the first device sends at least one first DCI and at least one second DCI to the second device. The first DCI indicates the transmission power control command of the SRS, and the second DCI indicates the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS. The format of the first DCI is different from that of the second DCI, and the first DCI and the second DCI are associated.

[0132] Optionally, the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the SRS transmission power control command can also be replaced by: the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the SRS transmission power control command indicated by the first DCI, or the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the SRS transmission power control command corresponding to the first DCI, or the second DCI indicating the SRS closed-loop power control adjustment state corresponding to the first DCI.

[0133] In one possible implementation, the first DCI is DCI format 1_1; the second DCI is DCI format 2_3.

[0134] In another possible implementation, the first DCI is DCI format 2_3; the second DCI is DCI format 1_1.

[0135] Optionally, if step 301 is executed, and the capability information reported by the second device indicates that the second device supports the first capability, then the first device determines that the first DCI is DCI format 1_1 and the second DCI is DCI format 2_3.

[0136] Optionally, if step 302 is executed, and the capability information reported by the second device indicates that the second device supports the second capability, then the first device determines that the first DCI is DCI format 2_3 and the second DCI is DCI format 1_1.

[0137] The following describes in detail the transmission method of the first device sending at least one first DCI and at least one second DCI:

[0138] The first device transmits at least one first DCI and at least one second DCI to the second device within the same time-domain resource unit. By transmitting at least one first DCI and at least one second DCI within the same time-domain resource unit, the first device indicates that the first DCI and the second DCI are associated.

[0139] The time-domain resource unit can be a frame, subframe, time slot, or symbol. For example, the first device transmits at least one first DCI and at least one second DCI to the second device within the same time slot. Or, for another example, the first device transmits at least one first DCI and at least one second DCI to the second device within the same one or more symbols.

[0140] Optionally, the first DCI and / or the second DCI may include a first field indicating that the first DCI and the second DCI are associated.

[0141] The specific transmission method of the first device sending at least one second DCI can be different depending on the different conditions met by the first device. These methods will be described below.

[0142] When the first device meets the first condition, it transmits using mode one. The first condition includes: the higher-layer parameter "srs-TPC-PDCCH-Group" is set to a first value, such as "typeA" or a newly defined value "typeC". Alternatively, the first condition includes: the power control of SRS is separated from the power control of PUSCH, and the first device supports supplementary uplink (SUL) carrier.

[0143] Method 1: The first device sends at least one second DCI, including: sending a second DCI, wherein the second DCI includes: N closed-loop power control indication fields of SRS, wherein the closed-loop power control indication fields of SRS indicate the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS, and N is an integer greater than or equal to 1.

[0144] The second DCI includes: a first block and / or a second block, the first block corresponding to the supplementary uplink SUL carrier and the second block corresponding to the non-supplementary uplink non-SUL carrier; the first block and / or the second block includes: N closed-loop power control indication fields of SRS.

[0145] For example, in Method 1, the second DCI is DCI format 2_3, and the first DCI is DCI format 1_1.

[0146] Accordingly, when the first device sends a second DCI, the first device sends a first DCI. That is, the number of first DCIs sent by the first device is the same as the number of second DCIs sent.

[0147] If the first device meets the second condition, it will transmit using mode two. The second condition includes: the value of the higher layer parameter "srs-TPC-PDCCH-Group" is a second value, such as "typeB" or a newly defined value "typeD". Alternatively, the first condition includes: the power control of SRS is separated from the power control of PUSCH, and the first device does not support supplementary uplink carriers.

[0148] Method 2: The first device sends at least one second DCI, including: sending N second DCIs, at least one of the N second DCIs including: a closed-loop power control indication field of an SRS, the closed-loop power control indication field of the SRS indicating the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS, where N is an integer greater than or equal to 1.

[0149] For example, in Method 2, the second DCI is DCI format 1_1, and the first DCI is DCI format 2_3.

[0150] Correspondingly, when the first device sends N second DCIs, the first device sends N first DCIs, and the N first DCIs correspond one-to-one with the N second DCIs.

[0151] Accordingly, the following describes how the second device determines the timing for receiving the first DCI and the second DCI:

[0152] In one possible implementation, the second device determines the reception timing of the first DCI and the second DCI as follows: K times before the transmission timing i of the second device sending the SRS. SRS,min K are symbols, where i is an integer greater than or equal to 1, and K is a number. SRS,min It is an integer greater than or equal to 1.

[0153] For example, if the second device is configured with the higher-layer parameter "tpc-Accumulation", then the second device determines the reception timing of the first DCI and the second DCI as follows: K times before the transmission timing i of the second device sending the SRS. SRS,min The symbol is used to determine whether the second device satisfies the first condition or the second condition.

[0154] In another possible implementation, the second device determines the timing of receiving the first DCI and the second DCI as follows: the second device transmits the SRS before the transmission timing i-i0 K. SRS,min (i-i0)-1 symbols were transmitted to the SRS before the time i of the K-th symbol transmission. SRS,min There are two symbols, i0 and i0 are integers greater than or equal to 1, and i0 is less than i. For ease of understanding, please refer to Figure 4, which is a schematic diagram of the second device determining the timing of receiving the first DCI and the second DCI in an embodiment of this application.

[0155] For example, if the second device is not configured with the higher-layer parameter "tpc-Accumulation", then the second device determines the timing for receiving the first DCI and the second DCI as follows: the transmission timing of the second device sending the SRS is i-i0 before K. SRS,min (i-i0)-1 symbols were transmitted to the SRS before the time i of the K-th symbol transmission. SRS,min A symbol.

[0156] Optionally, the second device determines which first DCI and second DCI are used to determine the transmission power of the SRS based on the SRS closed-loop power control adjustment state at transmission time i, as follows:

[0157] In one possible implementation, the first device configures the SRS closed-loop power control adjustment state of the transmission timing i to the second device, for example, through higher-layer parameter configuration. If the SRS closed-loop power control adjustment state of the transmission timing i is a first state, the second device determines the transmission power for transmitting the SRS based on a second DCI indicating the first state and a first DCI carried in the same time-domain resource unit as the second DCI. If the SRS closed-loop power control adjustment state of the transmission timing i is a second state, the transmission power for transmitting the probe reference signal is determined based on a second DCI indicating the second state and a first DCI carried in the same time-domain resource unit as the second DCI.

[0158] It should be noted that the first device transmits the first DCI and at least one second DCI. The first DCI and the second DCI may use the same frequency domain resources or different frequency domain resources. This application embodiment does not impose any restrictions on this.

[0159] 303. The second device sends an SRS to the first device, the transmission power of which is determined based on at least one first DCI and at least one second DCI.

[0160] In step 303, the second device determines the transmission power control command of the SRS and the corresponding SRS closed-loop power control adjustment state based on at least one first DCI and at least one second DCI. Then, the second device determines the transmission power of the SRS based on the transmission power control command and the corresponding SRS closed-loop power control adjustment state. Finally, the second device transmits the SRS based on the transmission power. Correspondingly, the first device receives the SRS.

[0161] In the above technical solution, the first DCI and the second DCI in different formats respectively indicate the transmission power control command of SRS and the SRS closed-loop power control adjustment state corresponding to the transmission power control command of SRS, so that the terminal device can still determine the transmission power of SRS according to the first DCI and the second DCI when the capability is limited.

[0162] Next, the communication device involved in the embodiments of this application will be described. This communication device can be used in at least one of the first device or the second device in the foregoing embodiments.

[0163] Figure 5 is a schematic diagram of a communication device according to an embodiment of this application. Referring to Figure 5, the communication device 500 includes a transceiver module 501 and a processing module 502.

[0164] The communication device 500 includes a network device or components (e.g., a chip or chip system), modules, or units within the network device, which may be a first device. Alternatively, the communication device 500 includes a terminal device or components (e.g., a chip or chip system), modules, or units within the terminal device, which may be a second device.

[0165] The communication device 500 can be used to perform all or part of the steps performed by the first device in the embodiments shown in FIG3 and FIG4. For details, please refer to the relevant descriptions in the embodiments shown in FIG3 and FIG4.

[0166] The communication device 500 can be used to perform all or part of the steps performed by the second device in the embodiments shown in FIG3 and FIG4. For details, please refer to the relevant descriptions in the embodiments shown in FIG3 and FIG4 above.

[0167] The processing module 502 is used for data processing. The transceiver module 501 is used to implement the corresponding communication functions.

[0168] Optionally, the transceiver module 501 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0169] It should be noted that the communication device 500 may include a transmitting module but not a receiving module. Alternatively, the communication device 500 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 500 includes both transmitting and receiving actions.

[0170] Optionally, the communication device 500 may further include a storage module, which can be used to store at least one of the instructions or data. The processing module 502 can read at least one of the instructions or data in the storage module so that the communication device 500 can implement the aforementioned method embodiment.

[0171] The communication device 500 can be used to perform the actions performed by the first device side in the embodiments shown in FIG3 and FIG4. The processing module 502 is used to perform processing-related operations on the first device side in the embodiments shown in FIG3 and FIG4. The transceiver module 501 is used to perform receiving or sending-related operations on the first device side in the embodiments shown in FIG3 and FIG4.

[0172] The communication device 500 can be used to perform the actions performed by the second device side in the embodiments shown in Figures 3 and 4. The processing module 502 is used to perform processing-related operations on the second device side in the embodiments shown in Figures 3 and 4. The transceiver module 501 is used to perform receiving or sending-related operations on the second device side in the embodiments shown in Figures 3 and 4.

[0173] For example, the communication device 500 is used to execute the following scheme.

[0174] In one example, when the communication device 500 is applied to the first device, the communication device 500 includes:

[0175] The transceiver module 501 is used to send a first downlink control information (DCI) and at least one second DCI. The first DCI indicates the transmission power control command of the sounding reference signal (SRS), and the second DCI indicates the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS. The format of the first DCI is different from the format of the second DCI.

[0176] The transceiver module 501 is also used to receive the SRS.

[0177] The possible implementation methods and descriptions of the transmission power control commands for the first DCI, the second DCI, and the SRS, as well as the SRS closed-loop power control adjustment state, can be found in the corresponding contents of the embodiments in Figures 3 and 4, and will not be repeated here.

[0178] In another example, the communication device 500 is applied to the second device, the communication device 500 comprising:

[0179] The transceiver module 501 is used to receive a first DCI and at least one second DCI, wherein the first DCI indicates a transmission power control command for a sounding reference signal SRS, and the second DCI indicates the closed-loop power control adjustment state of the sounding reference signal SRS, and the format of the first DCI is different from that of the second DCI.

[0180] The transceiver module 501 is also configured to transmit the SRS, the transmission power of which is determined based on the first DCI and the at least one second DCI.

[0181] For other implementation methods, please refer to the relevant descriptions in the embodiments shown in Figures 3 and 4 above, which will not be repeated here.

[0182] It should be understood that the specific procedures for each module to perform the above-mentioned corresponding processes have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0183] The processing module 502 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 501 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 501 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0184] This application also provides another communication device. FIG6 is a schematic diagram of another structure of the communication device according to an embodiment of this application. Referring to FIG6, the communication device 600 includes a processor 601.

[0185] Optionally, the communication device 600 may also include a memory 602.

[0186] Optionally, the communication device 600 may also include a transceiver 603.

[0187] In one possible implementation, the processor 601, memory 602, and transceiver 603 are connected via a bus, and the memory 602 stores computer instructions.

[0188] In one possible implementation, when the communication device 600 includes a network device, or the network device includes a CU or DU, or a component (e.g., a chip or chip system), module or unit within the network device, the communication device 600 can be used to perform the steps performed by the first device in the above method embodiments, as described in the relevant descriptions in the above method embodiments.

[0189] Optionally, the processing module 502 in the embodiment shown in FIG5 above may be the processor 601, and the transceiver module 501 in the embodiment shown in FIG5 above may be the transceiver 603.

[0190] This application also provides a communication device. Figure 7 is another structural schematic diagram of the communication device according to an embodiment of this application. Referring to Figure 7, the communication device 700 can be a terminal device in the above method embodiments, or a component (e.g., a chip or chip system), module, or unit of the terminal device in the above method embodiments. The communication device 700 can be used to perform the steps performed by the second device in the above method embodiments, and can be referred to the relevant descriptions in the above method embodiments.

[0191] Processors are mainly used to process data or signals, control communication devices, execute corresponding software programs, and process data from software programs.

[0192] It should be noted that this processor has weak signal processing capabilities and is unable to perform complex signal processing algorithms.

[0193] The memory is mainly used to store software programs and data. The radio frequency (RF) circuit is mainly used for the conversion between baseband signals and RF signals, as well as the processing of RF signals.

[0194] Antennas are primarily used for transmitting and receiving radio frequency signals in the form of electromagnetic waves.

[0195] Optionally, the communication device 700 may also include input / output devices, such as a touch screen, a display screen, a keyboard, etc., primarily used to receive user input data and output data to the user.

[0196] When data needs to be transmitted, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as electromagnetic waves through the antenna. When data is sent to the communication device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor then converts the baseband signal back into data and processes it.

[0197] For ease of explanation, Figure 7 shows only one memory and one processor. In actual communication device products, there may be one or more processors and one or more memories. Memory may also be called storage medium or storage device, etc. Memory may be set up independently of the processor or integrated with the processor; this application embodiment does not limit this.

[0198] In this embodiment, the antenna and radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the communication device, and the processor with processing functions can be regarded as the processing unit of the communication device. As shown in FIG7, the communication device 700 includes a transceiver unit 710 and a processing unit 720. The transceiver unit can also be called a transceiver, transceiver machine, transceiver device, etc. The processing unit can also be called a processor, processing board, processing module, processing device, etc.

[0199] Optionally, the devices in transceiver unit 710 used for receiving functions can be considered as receiving units, and the devices in transceiver unit 710 used for transmitting functions can be considered as transmitting units. That is, transceiver unit 710 includes both receiving and transmitting units. A transceiver unit can also be called a transceiver, transceiver circuit, etc. A receiving unit can also be called a receiver, receiver, or receiving circuit, etc. A transmitting unit can also be called a transmitter, transmitter, or transmitting circuit, etc.

[0200] It should be understood that the transceiver unit 710 is used to perform the transmission and reception operations of at least one of the devices in the second apparatus of the above method embodiment, and the processing unit 720 is used to perform other operations on at least one of the devices in the second apparatus of the above method embodiment besides the transmission and reception operations.

[0201] When the communication device is a chip or chip system, the chip or chip system includes a transceiver unit and a processing unit. The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, integrated circuit, or logic circuit integrated on the chip or chip system. In the above method embodiments, the sending operation corresponds to the output of the input / output circuit, and the receiving operation corresponds to the input of the input / output circuit.

[0202] This application also provides another communication system, which includes a first device and a second device. The first device is used to perform all or part of the steps performed by the first device in the embodiments shown in FIG3 and FIG4, and the second device is used to perform all or part of the steps performed by the second device in the embodiments shown in FIG3 and FIG4.

[0203] This application also provides a computer program product including computer instructions, which, when run on a computer, causes the computer to perform the method of the embodiments shown in Figures 3 and 4 above.

[0204] This application also provides a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform the methods of the embodiments shown in Figures 3 and 4 above.

[0205] This application also provides a chip device, including a processor, for calling a computer program or computer instructions stored in a memory, so that the processor executes the method of the embodiments shown in Figures 3 and 4 above.

[0206] Optionally, the processor is coupled to the memory via an interface.

[0207] Optionally, the chip device may also include a memory in which computer programs or computer instructions are stored.

[0208] The processor mentioned above can be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of a program for controlling the methods of the embodiments shown in Figures 3 and 4. The memory mentioned above can be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, such as random access memory (RAM).

[0209] 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 an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0210] 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.

[0211] Furthermore, 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. The integrated unit can be implemented in hardware or as a software functional unit.

[0212] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part of the technical solution that makes an essential contribution, or all or part 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, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0213] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A communication method applied to a first device, characterized in that, The method includes: Send at least one first downlink control information (DCI) and at least one second DCI, wherein the first DCI indicates a transmission power control command of a sounding reference signal (SRS), and the second DCI indicates the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS, and the format of the first DCI is different from that of the second DCI. The SRS is received, and the transmission power of the SRS is determined based on the at least one first DCI and the at least one second DCI.

2. The method according to claim 1, characterized in that, The first DCI is DCI format 1_1; The second DCI is DCI format 2_3.

3. The method according to claim 1, characterized in that, The first DCI is DCI format 2_3; The second DCI is DCI format 1_1.

4. The method according to any one of claims 1-3, characterized in that, The first DCI and the second DCI are related.

5. The method according to claim 4, characterized in that, The first DCI and the second DCI are related, including: The first DCI and the second DCI are carried in the same time slot.

6. The method according to any one of claims 2, 4-5, characterized in that, Sending the at least one second DCI includes: Send a second DCI, the second DCI comprising: N SRS closed-loop power control indication fields, the SRS closed-loop power control indication fields indicating the SRS closed-loop power control adjustment state corresponding to the SRS transmission power control command, where N is an integer greater than or equal to 1.

7. The method according to claim 6, characterized in that, The second DCI includes: a first block and / or a second block, wherein the first block corresponds to a supplementary uplink SUL carrier and the second block corresponds to a non-supplementary uplink non-SUL carrier; The first block and / or the second block include: the closed-loop power control indication domains of the N SRS.

8. The method according to any one of claims 3, 4-5, characterized in that, Sending the at least one second DCI includes: Send N second DCIs, at least one of the N second DCIs including: at least one closed-loop power control indication field of the SRS, the closed-loop power control indication field of the SRS indicating the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS, where N is an integer greater than or equal to 1.

9. A communication method applied to a second device, characterized in that, The method includes: Receive at least one first DCI and at least one second DCI, wherein the first DCI indicates a transmission power control command of a probe reference signal (SRS), and the second DCI indicates the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS, and the format of the first DCI is different from that of the second DCI. The SRS is transmitted, and the transmission power of the SRS is determined based on the at least one first DCI and the at least one second DCI.

10. The method according to claim 9, characterized in that, The first DCI is DCI format 1_1; The second DCI is DCI format 2_3.

11. The method according to claim 9, characterized in that, The first DCI is DCI format 2_3; The second DCI is DCI format 1_1.

12. The method according to any one of claims 9-11, characterized in that, The first DCI and the second DCI are related.

13. The method according to claim 12, characterized in that, The first DCI and the second DCI are related, including: The first DCI and the second DCI are carried in the same time slot.

14. The method according to any one of claims 10, 12-13, characterized in that, Receiving the at least one second DCI includes: Receive a second DCI, the second DCI comprising: N closed-loop power control indication fields of SRS, the closed-loop power control indication fields of SRS indicating the SRS closed-loop power control adjustment state corresponding to the transmission power control command of SRS, where N is an integer greater than or equal to 1.

15. The method according to claim 14, characterized in that, The closed-loop power control indication fields of the N SRSs correspond to different carriers.

16. The method according to any one of claims 11, 12-13, characterized in that, Receiving the at least one second DCI includes: The second DCI includes: at least one closed-loop power control indication field of the SRS, wherein the closed-loop power control indication field of the SRS indicates the SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS.

17. The method according to any one of claims 9-16, characterized in that, If the second device sends the SRS closed-loop power control adjustment state as the first state, then the transmission power for sending the probe reference signal is determined according to the second DCI indicating the first state and the first DCI carried in the same time domain resource unit as the second DCI. Alternatively, if the second device sends the SRS closed-loop power control adjustment state as the second state, the transmission power for transmitting the probe reference signal is determined based on the second DCI indicating the second state and the first DCI carried in the same time domain resource unit as the second DCI.

18. The method according to any one of claims 9-17, characterized in that, The method further includes: The timing for receiving the first DCI and the second DCI is determined as follows: The second device sends the SRS transmission timing i before K SRS,min K symbols, where i is an integer greater than or equal to 1. SRS,min For integers greater than or equal to 1, Alternatively, the second device may transmit the SRS before the timing i-i0 of K. SRS,min (i-i0)-1 symbols to the K symbols prior to the transmission timing i of the SRS SRS,min There are two symbols, where i0 is an integer greater than or equal to 1, and i0 is less than i.

19. A communication device, characterized in that, It includes a communication unit and a processing unit, the communication unit and the processing unit being used to perform the method as described in any one of claims 1 to 8, or the method as described in any one of claims 9 to 18.

20. A communication device, characterized in that, Includes a processor for executing a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1 to 8, or the method as described in any one of claims 9 to 18.

21. The communication device according to claim 20, characterized in that, It also includes a memory for storing the computer program or instructions.

22. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices and transmit them to the processor or to send signals from the processor to other communication devices, and the processor is used to implement the method as described in any one of claims 1 to 8, or the method as described in any one of claims 9 to 18, through logic circuits or execution code instructions.

23. The communication device according to claim 22, characterized in that, The communication device is a chip or chip system.

24. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed by a communication device, implement the method as described in any one of claims 1 to 8, or the method as described in any one of claims 9 to 18.

25. A computer program product, characterized in that, Includes instructions that, when executed on a computer, cause the computer to perform the method as claimed in any one of claims 1 to 8, or the method as claimed in any one of claims 9 to 18.

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