Communication method and device

Abstract

The invention provides a communication method and device. The method comprises the following steps: a terminal device sends a first uplink signal to a first network device; the terminal equipment sends a second uplink signal to second network equipment; wherein the wave beam used for sending the first uplink signal is a first wave beam, the wave beam used for sending the second uplink signal is a second wave beam, and the identifier of the first wave beam is different from the identifier of the second wave beam; the first network equipment supports transmission of downlink signals, and the second network equipment does not support transmission of downlink signals. According to the method, for different network devices, uplink transmission is carried out by using different beams, and the communication performance can be improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method and apparatus. Background Art

[0002] The fifth-generation communication system, i.e., the new radio (NR) system, can support the transmission of signals with a larger bandwidth at a higher frequency point. However, the signal energy attenuation is relatively large when the frequency point increases. Due to the limited transmission power of the terminal device, when the uplink signal is transmitted at a higher frequency point, the maximum transmission distance that can be accepted by the network device is short, resulting in poor uplink coverage performance of the communication network and a low experience rate of the terminal device at the network edge.

[0003] To improve the uplink coverage performance of the network, a common solution is to deploy a transmission reception point (TRP) that is only used for uplink signal reception (i.e., UL-only TRP) at the cell edge, reduce the energy attenuation from the terminal device to the network device, and increase the uplink signal energy received by the network device, which is equivalent to improving the coverage ability of the physical random access channel (PRACH).

[0004] Currently, the terminal device sends the uplink signal based on a set of transmission parameters. In the scenario where the UL-only TRP is deployed, the positions of the base station (macro TRP) that receives the uplink signal and the UL-only TRP are different. The same transmission parameters may result in power consumption waste of the terminal device or poor signal transmission performance. Therefore, how to configure the uplink transmission parameters of the terminal device becomes a problem worthy of research. Summary of the Invention

[0005] This application provides a communication method and apparatus, which can configure the transmission beam and transmission parameters of the terminal device side adapted to different network devices, and can improve the signal transmission performance.

[0006] In a first aspect, an embodiment of this application provides a communication method, which is applied to a terminal device and includes: sending a first uplink signal to a first network device; sending a second uplink signal to a second network device; where the beam used to send the first uplink signal is a first beam, the beam used to send the second uplink signal is a second beam, and the identifiers of the first beam and the second beam are different; the first network device supports the transmission of downlink signals, and the second network device does not support the transmission of downlink signals.

[0007] In the above design, the first network device may be a macro station TRP, and the second network device may be a UL-only TRP. The terminal device uses the identifiers of different beams to send uplink signals to the macro station TRP and the UL-only TRP respectively, so that the energy of the uplink signals received by the macro station TRP and the UL-only TRP is higher, which can improve the signal transmission performance and the uplink transmission rate.

[0008] In a possible design, the method further includes: the terminal device receives first indication information, where the first indication information is used to indicate the identifier of the first beam corresponding to the first network device and the identifier of the second beam corresponding to the second network device; or, the first indication information is used to indicate the identifier of the second beam corresponding to the second network device.

[0009] In a possible design, the method further includes: the terminal device receives second indication information, where the second indication information is used to indicate a first signal set corresponding to the first network device and a second signal set corresponding to the second network device, the first signal set includes the first uplink signal, and the second signal set includes the second uplink signal.

[0010] In such a design, signal sets sent by the terminal device are respectively configured for the macro station TRP and the UL-only TRP, and different beam identifiers are configured for different signal sets, which can distinguish the signals sent to different network devices and reduce interference between signals. Optionally, when the terminal device sends uplink signals, the signals in different signal sets can also be mapped to mutually orthogonal time-frequency resources, that is, the first time-frequency resource for sending the signals in the first signal set and the second time-frequency resource for sending the signals in the second signal set are mutually orthogonal time-frequency resources. Such a design can also ensure that the terminal device can independently send these uplink signals.

[0011] In a possible design, the method further includes: the terminal device receives third indication information, where the third indication information is used to indicate a first transmission parameter corresponding to the first network device and a second transmission parameter corresponding to the second network device; sending the first uplink signal to the first network device includes: sending the first uplink signal to the first network device according to the first transmission parameter; sending the second uplink signal to the second network device includes: sending the second uplink signal to the second network device according to the second transmission parameter. In such a design, transmission parameters used by the terminal device when sending uplink signals are respectively configured for the macro station TRP and the UL-only TRP, which can achieve the adaptation between the transmission parameters and different TRPs and improve the transmission performance of the uplink signals.

[0012] In a possible design, both the first transmission parameter and the second transmission parameter are path loss parameters. The first transmission parameter can also be alternatively described as the first path loss parameter, and the second transmission parameter can also be alternatively described as the second path loss parameter. In another possible design, both the first transmission parameter and the second transmission parameter are timing advance parameters. The first transmission parameter can also be alternatively described as the first timing advance (TA) parameter, and the second transmission parameter can also be alternatively described as the second timing advance parameter.

[0013] In a possible design, before the terminal device receives the third indication information, the method further includes: the terminal device sending at least one uplink reference signal, where the at least one uplink reference signal is used to determine the first transmission parameter and the second transmission parameter. For example, the terminal device sends a first uplink reference signal through the first beam, and the first uplink reference signal is used to determine the first transmission parameter; and the terminal device sends a second uplink reference signal through the second beam, and the second uplink reference signal is used to determine the second transmission parameter. Such a design can improve the adaptability between the transmission parameter and the transmission beam, thereby improving the transmission performance of the uplink signal.

[0014] In a possible design, the third indication information includes: the first transmission parameter and the second transmission parameter; or, the first transmission parameter and the difference between the first transmission parameter and the second transmission parameter; or, the second transmission parameter and the difference between the second transmission parameter and the first transmission parameter.

[0015] In a possible design, when the difference between the first transmission parameter and the second transmission parameter is less than or equal to a first threshold, the transmission power for sending the first uplink signal is the same as the transmission power for sending the second uplink signal; or, when the difference between the first transmission parameter and the second transmission parameter is greater than the first threshold, the transmission power for sending the first uplink signal is different from the transmission power for sending the second uplink signal. Such a design can reduce the indication overhead on the network device side.

[0016] In a second aspect, an embodiment of the present application provides a communication method, which is applied to a first network device and includes: sending first indication information, where the first indication information is used to indicate the identifier of a first beam corresponding to the first network device and the identifier of a second beam corresponding to a second network device; where the first network device supports sending downlink signals, and the second network device does not support sending downlink signals; receiving a first uplink signal sent by the terminal device through the first beam.

[0017] In a possible design, the method further includes: a first network device receives fourth indication information from the second network device, where the fourth indication information is used to indicate an identifier of the second beam corresponding to the second network device.

[0018] In a possible design, the method further includes: a first network device sends second indication information, where the second indication information is used to indicate a first signal set corresponding to the first network device and a second signal set corresponding to the second network device, the first signal set includes the first uplink signal; the second signal set includes the second uplink signal.

[0019] In a possible design, a first time-frequency resource for receiving signals in the first signal set and a second time-frequency resource for receiving signals in the second signal set are orthogonal time-frequency resources.

[0020] In a possible design, the method further includes: a first network device sends third indication information, where the third indication information is used to indicate a first transmission parameter corresponding to the first network device and a second transmission parameter corresponding to the second network device; and the first network device receives the first uplink signal sent by the terminal device based on the first transmission parameter.

[0021] In a possible design, before the first network device sends the third indication information, the method further includes: the first network device receives a first uplink reference signal sent by the terminal device through the first beam; and the first network device determines the first transmission parameter according to the first uplink reference signal.

[0022] In a possible design, the method further includes: the first network device receives fifth indication information, where the fifth indication information is used to indicate the second transmission parameter corresponding to the second network device.

[0023] In a possible design, the third indication information includes: the first transmission parameter and the second transmission parameter; or, the first transmission parameter and a difference between the first transmission parameter and the second transmission parameter; or, the second transmission parameter and a difference between the second transmission parameter and the first transmission parameter.

[0024] In a third aspect, an embodiment of the present application provides a communication method, which is applied to a second network device and includes: sending fourth indication information to a first network device, where the fourth indication information is used to indicate an identifier of a second beam corresponding to the second network device, so that the first network device indicates the identifier of the second beam to a terminal device; where the first network device supports sending downlink signals, and the second network device does not support sending downlink signals; receiving a second uplink signal sent by the terminal device through the second beam.

[0025] In a possible design, the method further includes: the second network device sending fifth indication information to the first network device, where the fifth indication information indicates second transmission parameters corresponding to the second network device, so that the first network device sends third indication information to the terminal device, and the third indication information is used to indicate the first transmission parameters corresponding to the first network device and the second transmission parameters corresponding to the second network device; the second network device receiving the second uplink signal sent by the terminal device based on the second transmission parameters.

[0026] In a possible design, before the second network device sends the third indication information, it further includes: the second network device receiving a second uplink reference signal sent by the terminal device through the second beam; and the second network device determining the second transmission parameters according to the second uplink reference signal.

[0027] In a fourth aspect, an embodiment of the present application provides a communication device, which may be a terminal device, or a device, module, or chip in the terminal device, or a device that can be used in matching with the terminal device. In one design, the communication device may include modules corresponding one by one to the methods / operations / steps / actions described in the first aspect, and the module may be a hardware circuit, software, or a combination of hardware circuit and software. In one design, the communication device may include a processing module and a communication module. Optionally, the communication module includes a sending unit and a receiving unit, and the communication module may also be described by other names such as a transceiver unit, a communication interface, or a communication unit. The processing module may also be described by other names such as a processing unit.

[0028] The communication module is configured to perform the following operations under the control of the processing module:

[0029] Sending a first uplink signal to the first network device;

[0030] Sending a second uplink signal to the second network device; where the beam for sending the first uplink signal is a first beam, the beam for sending the second uplink signal is a second beam, and the identifiers of the first beam and the second beam are different; the first network device supports sending downlink signals, and the second network device does not support sending downlink signals.

[0031] In a possible design, the communication module is further configured to receive first indication information, where the first indication information is used to indicate the identifier of the first beam corresponding to the first network device and the identifier of the second beam corresponding to the second network device; or, the first indication information is used to indicate the identifier of the second beam corresponding to the second network device.

[0032] In a possible design, the communication module is further configured to receive second indication information, where the second indication information is used to indicate a first signal set corresponding to the first network device and a second signal set corresponding to the second network device. The first signal set includes the first uplink signal, and the second signal set includes the second uplink signal. Optionally, the first time-frequency resource for transmitting the signals in the first signal set and the second time-frequency resource for transmitting the signals in the second signal set are orthogonal time-frequency resources.

[0033] In a possible design, the communication module is further configured to receive third indication information, where the third indication information is used to indicate a first transmission parameter corresponding to the first network device and a second transmission parameter corresponding to the second network device; when the communication module sends a first uplink signal to the first network device, it is specifically configured to: send the first uplink signal to the first network device according to the first transmission parameter; when the communication module sends a second uplink signal to the second network device, it is specifically configured to: send the second uplink signal to the second network device according to the second transmission parameter.

[0034] In a possible design, both the first transmission parameter and the second transmission parameter are path loss parameters. The first transmission parameter can also be alternatively described as the first path loss parameter, and the second transmission parameter can also be alternatively described as the second path loss parameter. In another possible design, both the first transmission parameter and the second transmission parameter are timing advance parameters. The first transmission parameter can also be alternatively described as the first timing advance (TA) parameter, and the second transmission parameter can also be alternatively described as the second timing advance parameter.

[0035] In a possible design, the communication module is further configured to send at least one uplink reference signal before receiving the third indication information, where the at least one uplink reference signal is used to determine the first transmission parameter and the second transmission parameter. For example, when the communication module sends the at least one uplink reference signal, it is specifically configured to: send a first uplink reference signal through the first beam, where the first uplink reference signal is used to determine the first transmission parameter; and send a second uplink reference signal through the second beam, where the second uplink reference signal is used to determine the second transmission parameter.

[0036] In a possible design, the third indication information includes: the first transmission parameter and the second transmission parameter; or, the first transmission parameter and the difference between the first transmission parameter and the second transmission parameter; or, the second transmission parameter and the difference between the second transmission parameter and the first transmission parameter.

[0037] In a possible design, when the difference between the first transmission parameter and the second transmission parameter is less than or equal to a first threshold, the transmission power for sending the first uplink signal is the same as the transmission power for sending the second uplink signal; or, when the difference between the first transmission parameter and the second transmission parameter is greater than the first threshold, the transmission power for sending the first uplink signal is different from the transmission power for sending the second uplink signal.

[0038] In a fifth aspect, an embodiment of the present application provides a communication device, which may be a first network device, or a device, module, or chip in the first network device, or a device that can be used in combination with the first network device. In one design, the communication device may include modules corresponding one by one to the methods / operations / steps / actions described in the second aspect, and the module may be a hardware circuit, software, or a combination of a hardware circuit and software. In one design, the communication device may include a processing module and a communication module. Optionally, the communication module includes a sending unit and a receiving unit, and the communication module may also be described by other names such as a transceiver unit, a communication interface, or a communication unit. The processing module may also be described by other names such as a processing unit.

[0039] The communication module is configured to perform the following operations under the control of the processing module:

[0040] Send first indication information, where the first indication information is used to indicate the identifier of a first beam corresponding to a first network device and the identifier of a second beam corresponding to a second network device; where the first network device supports sending downlink signals, and the second network device does not support sending downlink signals;

[0041] Receive a first uplink signal sent by a terminal device through the first beam.

[0042] In a possible design, the communication module is further configured to receive fourth indication information from the second network device, where the fourth indication information is used to indicate the identifier of the second beam corresponding to the second network device.

[0043] In a possible design, the communication module is further configured to send second indication information, where the second indication information is used to indicate a first signal set corresponding to the first network device and a second signal set corresponding to the second network device, the first signal set includes the first uplink signal; the second signal set includes the second uplink signal.

[0044] In a possible design, a first time-frequency resource for receiving signals in the first signal set and a second time-frequency resource for receiving signals in the second signal set are orthogonal time-frequency resources.

[0045] In a possible design, the communication module is further configured to: send third indication information, where the third indication information is used to indicate a first transmission parameter corresponding to the first network device and a second transmission parameter corresponding to the second network device; and receive the first uplink signal sent by the terminal device based on the first transmission parameter.

[0046] In a possible design, the communication module is further configured to, before sending the third indication information, receive a first uplink reference signal sent by the terminal device through the first beam; the processing module is further configured to determine the first transmission parameter according to the first uplink reference signal.

[0047] In a possible design, the communication module is further configured to receive fifth indication information, where the fifth indication information is used to indicate the second transmission parameter corresponding to the second network device.

[0048] In a possible design, the third indication information includes: the first transmission parameter and the second transmission parameter; or, the first transmission parameter and the difference between the first transmission parameter and the second transmission parameter; or, the second transmission parameter and the difference between the second transmission parameter and the first transmission parameter.

[0049] In a sixth aspect, an embodiment of the present application provides a communication device, which may be a second network device, or a device, module, or chip in the second network device, or a device that can be used in combination with the second network device. In one design, the communication device may include modules corresponding one by one to the methods / operations / steps / actions described in the third aspect, and the module may be a hardware circuit, software, or a combination of hardware circuit and software. In one design, the communication device may include a processing module and a communication module. Optionally, the communication module includes a sending unit and a receiving unit, and the communication module may also be described by other names such as a transceiver unit, a communication interface, or a communication unit. The processing module may also be described by other names such as a processing unit.

[0050] The communication module is configured to perform the following operations under the control of the processing module:

[0051] Send fourth indication information to a first network device, where the fourth indication information is used to indicate an identifier of a second beam corresponding to the second network device, so that the first network device indicates the identifier of the second beam to a terminal device; wherein, the first network device supports sending downlink signals, and the second network device does not support sending downlink signals;

[0052] Receive a second uplink signal sent by the terminal device through the second beam.

[0053] In a possible design, the communication module is further configured to send fifth indication information to the first network device, where the fifth indication information indicates a second transmission parameter corresponding to the second network device, so that the first network device sends third indication information to the terminal device, and the third indication information is used to indicate a first transmission parameter corresponding to the first network device and a second transmission parameter corresponding to the second network device; the communication module is further configured to receive a second uplink signal sent by the terminal device based on the second transmission parameter.

[0054] In a possible design, the communication module is further configured to receive a second uplink reference signal sent by the terminal device through the second beam before sending the third indication information. The processing module is further configured to determine the second transmission parameter according to the second uplink reference signal.

[0055] In a seventh aspect, an embodiment of the present application provides a communication device, where the communication device includes a processor for implementing the method described in the first aspect above. The processor is coupled to a memory, and the memory is used to store instructions and data. When the processor executes the instructions stored in the memory, the method described in the first aspect can be implemented. Optionally, the communication device may further include a memory; the communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces.

[0056] In an eighth aspect, an embodiment of the present application provides a communication device, where the communication device includes a processor for implementing the method described in the second aspect above. The processor is coupled to a memory, and the memory is used to store instructions and data. When the processor executes the instructions stored in the memory, the method described in the second aspect can be implemented. Optionally, the communication device may further include a memory; the communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces.

[0057] In a ninth aspect, an embodiment of the present application provides a communication device, which includes a processor for implementing the method described in the second aspect above. The processor is coupled to a memory, and the memory is used to store instructions and data. When the processor executes the instructions stored in the memory, the method described in the third aspect can be implemented. Optionally, the communication device may further include a memory; the communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces.

[0058] In a tenth aspect, an embodiment of the present application provides a communication system, including the communication device described in the fourth aspect or the seventh aspect; the communication device described in the fifth aspect or the eighth aspect; and the communication device described in the sixth aspect or the ninth aspect.

[0059] In an eleventh aspect, an embodiment of the present application further provides a computer program, which, when running on a computer, causes the computer to execute the method provided in any one of the first aspect to the third aspect above.

[0060] In a twelfth aspect, an embodiment of the present application further provides a computer program product, including instructions, which, when running on a computer, cause the computer to execute the method provided in any one of the first aspect to the third aspect above.

[0061] In a thirteenth aspect, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instructions are stored, and when the computer program or instructions run on a computer, the computer is caused to execute the method provided in any one of the first aspect to the third aspect above.

[0062] In a fourteenth aspect, an embodiment of the present application further provides a chip, which is used to read the computer program stored in the memory and execute the method provided in any one of the first aspect to the third aspect above, or the chip includes a circuit for executing the method provided in any one of the first aspect to the third aspect above.

[0063] In a fifteenth aspect, an embodiment of the present application further provides a chip system, which includes a processor for supporting a device to implement the method provided in any one of the first aspect to the third aspect above. In a possible design, the chip system further includes a memory, and the memory is used to store necessary programs and data of the device. The chip system may be composed of chips or may include chips and other discrete devices.

[0064] For the effects of the solutions provided in any one of the second aspect to the fifteenth aspect above, reference may be made to the corresponding descriptions in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 is a schematic structural diagram of a communication system in an embodiment of the present application;

[0066] Figure 2 is one of the schematic flowcharts of a communication method in an embodiment of the present application;

[0067] Figure 3 is one of the schematic distribution diagrams of time-frequency positions in an embodiment of the present application;

[0068] Figure 4 is one of the schematic distribution diagrams of time-frequency positions in an embodiment of the present application;

[0069] Figure 5 is one of the schematic flowcharts of a communication method in an embodiment of the present application;

[0070] Figure 6 is one of the schematic flowcharts of a communication method in an embodiment of the present application;

[0071] Figure 7 is one of the schematic flowcharts of a communication method in an embodiment of the present application;

[0072] Figure 8 is one of the schematic structural diagrams of a communication device in an embodiment of the present application;

[0073] Figure 9 is one of the schematic structural diagrams of a communication device in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0074] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0075] At least one (item) involved in the following embodiments of the present application indicates one (item) or more (items). More (items) means two (items) or more than two (items). "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can indicate: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates an "or" relationship between the associated objects before and after. In addition, it should be understood that although terms such as first and second may be used in the embodiments of the present application to describe each object, these objects should not be limited to these terms. These terms are only used to distinguish each object from each other.

[0076] As used in the following description of the embodiments of the present application, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes other steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any method or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or more advantageous than other methods or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0077] The technologies provided by the embodiments of the present application can be applied to various communication systems. For example, the communication system can be a third-generation (3G) communication system (such as the dual connection of evolved universal terrestrial radio access (E-UTRA) and NR, universal mobile telecommunication system (UMTS)), a fourth-generation (4G) communication system (such as long term evolution (LTE) system), a fifth-generation (5G) communication system, worldwide interoperability for microwave access (WiMAX), or a wireless local area network (WLAN) system, or a fusion system of multiple systems, or a future communication system, such as a sixth-generation (6G) communication system, etc. Among them, the 5G communication system can also be referred to as a new radio (NR) system.

[0078] A network element in a communication system can send signals to another network element or receive signals from another network element. The signals can include information, data, etc.; a network element can also be referred to as an entity, a network entity, a device, a communication device, a communication module, a node, a communication node, etc. In the embodiments of this application, the description is made by taking the network element as an example. For example, a communication system can include at least one terminal device and at least one network device. Among them, the network element that sends the signal can be a network device, and the network element that receives the signal can be a terminal device; or, the network element that sends the signal can be a terminal device, and the network element that receives the signal can be a network device. In addition, it can be understood that if there are multiple terminal devices in the communication system, the multiple terminal devices can also send signals to each other, that is, both the network element that sends the signal and the network element that receives the signal can be terminal devices.

[0079] The terminal device and the network device will be introduced in detail below.

[0080] (1) Terminal device

[0081] A terminal device, also known as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to users. The terminal device can communicate with one or more core network devices through network devices. The terminal device includes a handheld device with wireless connection function, other processing devices connected to a wireless modem, or in-vehicle devices, etc. The terminal device can be a portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile device. Some examples of terminal devices are: personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistant (PDA), wireless network cameras, mobile phones, tablet computers, laptop computers, palmtop computers, mobile internet devices (MID), wearable devices such as smart watches, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, terminals in vehicle networking systems, wireless terminals in self-driving, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city such as smart fuel dispensers, terminal devices on high-speed trains, and wireless terminals in smart home, such as smart speakers, smart coffee machines, smart printers, etc.

[0082] In the embodiments of the present application, the communication device for implementing the functions of the terminal device can be a terminal device, or a terminal device with partial functions of the terminal, or a device capable of supporting the terminal device to implement the functions, such as a chip system, and this device can be installed in the terminal device. In the embodiments of the present application, the chip system can be composed of chips, or can include chips and other discrete devices. In the technical solutions provided in the embodiments of the present application, the communication device for implementing the functions of the terminal device being a terminal device or UE is taken as an example for description.

[0083] In the embodiments of the present application, "sending information to... (a terminal device)" can be understood as the destination of the information being the terminal device, which may include directly or indirectly sending information to the terminal device. "Receiving information from... (a terminal device)" can be understood as the source of the information being the terminal device, which may include directly or indirectly receiving information from the terminal device. Necessary processing may be performed on the information between the source and the destination of the information sending, such as format change, etc., but the destination can be understood as the valid information from the source. Similar expressions in the present application can be understood similarly and will not be elaborated here.

[0084] (2) Network device

[0085] The network device may be a base station (BS), and the network device may also be referred to as an access network device, an access node (AN), or a radio access node (RAN). The network device may be connected to a core network (such as the core network of LTE or the core network of 5G, etc.), and the network device may provide wireless access services for terminal devices. Examples of some network devices include, but are not limited to, at least one of the following: the next-generation node B (gNB) in 5G, the network device in an open radio access network (O-RAN), an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a transmitting and receiving point (TRP), a transmitting point (TP), and / or a mobile switching center, etc.; or, the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, or a network device in a future evolved public land mobile network (PLMN), etc.

[0086] It can be understood that the TRP is divided into an uplink-only transmission and reception point (UL-only TRP) and a macro station TRP. Among them, the UL-only TRP can receive uplink signals from the terminal device, but cannot send downlink signals to the terminal device. Compared with the UL-only TRP, the macro station TRP can receive uplink signals from the terminal device and can also send downlink signals to the terminal device.

[0087] Optionally, the network device (macro station-TRP) in the embodiments of the present application may be an integrated base station, or may be a base station including a centralized unit (CU) and / or a distributed unit (DU). The base station including the CU and the DU may also be referred to as a base station with separated CU and DU, such as the base station includes a gNB-CU and a gNB-DU. Among them, the CU may also be separated into a CU control plane (CU-CP) and a CU user plane (CU-UP), such as the base station includes a gNB-CU-CP, a gNB-CU-UP, and a gNB-DU. Or, the network device in the embodiments of the present application may also be a radio unit (RU). Or, the network device in the embodiments of the present application may also be an open radio access network (O-RAN) architecture, etc. The embodiments of the present application do not limit the specific deployment manner of the network device. Exemplarily, when the network device is an O-RAN architecture, the network device shown in the embodiments of the present application may be an access network device in the O-RAN, such as a combination of one or more of a CU, a DU, or an RU, or a module in the access network device. In the ORAN system, the CU may also be referred to as an open (O)-CU, the CU-CP may also be referred to as an open (O)-CU-CP, the CU-UP may also be referred to as an open (O)-CU-UP, and the RU may also be referred to as an open (O)-RU.

[0088] In the embodiments of the present application, the communication device for implementing the functions of the network device may be the network device, or may be a device with partial functions of the network device, or may be a device capable of supporting the network device to implement the functions. For example, a chip system, and this device may be installed in the network device. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In the technical solutions provided in the embodiments of the present application, the communication device for implementing the functions of the network device is taken as an example of the network device for description.

[0089] In the embodiments of the present application, "sending information to... (network device)" can be understood as the destination of the information being the network device, which may include directly or indirectly sending information to the network device. "Receiving information from... (network device)" can be understood as the source of the information being the network device, which may include directly or indirectly receiving information from the network device. Necessary processing may be performed on the information between the source and destination of the information transmission, such as format change, etc., but the destination can be understood as the valid information from the source. Similar expressions in the present application can be understood similarly and will not be elaborated here.

[0090] In the embodiments of the present application, the technical solution mainly involves the terminal device sending uplink signals to the UL-only TRP and the macro station TRP, and can be applied to, for example, Figure 1 the communication system 100 shown in the figure. As an example, the communication system 100 includes a first network device 110, a second network device 120, and a terminal device 130. Among them, the first network device 110 can send downlink signals to the terminal device and can also receive uplink signals from the terminal device, that is, the first network device 110 can also be understood as the aforementioned macro station TRP. The second network device 120 can receive uplink signals from the terminal device but does not support sending downlink signals, that is, the second network device 120 can also be understood as the aforementioned UL-only TRP.

[0091] In the embodiments of the present application, the downlink signal is carried on the downlink channel, and the uplink signal is carried on the uplink channel. As an example, the downlink channel includes a downlink data channel, a downlink control channel, and a broadcast channel, etc. Among them, the downlink data channel may be a physical downlink shared channel (PDSCH), the downlink control channel may be a physical downlink control channel (PDCCH), and the broadcast channel may be a physical broadcast channel (PBCH). Correspondingly, the uplink channel includes an uplink data channel, an uplink control channel, a random access channel, and other channels, etc. Among them, the uplink data channel may be a physical uplink shared channel (PUSCH), the uplink control channel may be a physical uplink control channel (PUCCH), and the physical random access channel (PRACH). It should be understood that the present application embodiments only describe the channel names with the above examples, and in different systems and different scenarios, the data channel and the control channel may have different names, and the present application embodiments do not limit this.

[0092] It should be understood that Figure 1 The number and type of each device in the shown communication system are only for illustration, and the embodiments of the present application are not limited thereto. In actual applications, the communication system may further include more terminal devices, more network devices, and may also include other network elements, such as core network devices and / or network management devices such as operation administration and maintenance (OAM) devices.

[0093] The communication system and service scenarios described in the embodiments of the present application are to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0094] Hereinafter, some terms in the embodiments of the present application are explained to facilitate the understanding of those skilled in the art.

[0095] 1) Path loss (referred to as "path loss" for short): It refers to the energy attenuation of electromagnetic waves propagating in space, generally inversely proportional to the square or fourth power of the distance.

[0096] 2) Power control (referred to as "power control" for short): To ensure that the signals sent by the terminal device have basically the same energy when reaching network devices at different distances from the terminal device, the network device needs to send signaling to the terminal to adjust the transmission power used by the terminal device to send signals to different network devices. This process is called power control.

[0097] 3) Reference signal (RS): Generally used for channel estimation, assisting signal demodulation, detection, etc. Some examples of reference signals are as follows: sounding reference signal (SRS), channel quality indicator reference signal (CQI-RS), demodulation reference signal (DMRS), channel state information reference signal (CSI-RS), demodulation reference signal (DMRS), and synchronization signal / physical broadcast channel block (SS / PBCH block). Among them, SS / PBCH block can be abbreviated as synchronization signal block (SSB). DMRS and CSI-RS can be used to obtain channel information.

[0098] 4) Timing advance: When the terminal device sends an uplink signal to the network device in a communication network, in order to align the timing of the uplink signal with that of the downlink signal when the uplink signal reaches the network device, the terminal device needs to make a timing advance (TA) adjustment when sending the uplink signal.

[0099] In the scenario of deploying UL-only TRP, the macro station TRP and the UL-only TRP are deployed at different locations. Generally speaking, compared with the macro station TRP, the UL-only TRP is closer to the terminal device. Therefore, the path loss from the terminal device to the UL-only TRP is smaller and the transmission delay is smaller. When the terminal device sends an uplink signal, appropriate power control is required. Currently, the terminal device uses the same transmission parameters (such as transmit power, TA) to send a certain uplink signal, without distinguishing whether the receiving side of the uplink signal is the UL-only TRP or the macro station TRP. Such a design may lead to the situation that the transmit power of some uplink signals is insufficient or the transmit power of some uplink signals is high, reducing the communication performance.

[0100] Based on this, an embodiment of the present application provides a communication method, in which uplink transmission parameters are configured for the macro station TRP and the UL-only TRP respectively, such as the beam used for sending the uplink signal, the transmission power, the TA, or other parameters, etc., to improve the adaptability between the uplink transmission parameters and the TRPs at different positions, thereby improving the communication performance.

[0101] Taking the first network device as the macro station TRP and the second network device as the UL-only TRP as an example, the centralized communication method provided by the embodiment of the present application will be described in detail below.

[0102] See Figure 2 In the first communication method shown schematically, the terminal device sends uplink signals to the first network device and the second network device according to different transmission parameters. This method mainly includes the following steps.

[0103] S200, the terminal device sends an uplink reference signal; the first network device receives the uplink reference signal, and the second network device receives the uplink reference signal.

[0104] Specifically, the transmission power used by the terminal device to send the uplink reference signal can be configured by the first network device or can be predefined (or preconfigured) by the protocol.

[0105] S201, the first network device measures the uplink reference signal and determines the first transmission parameter corresponding to the first network device.

[0106] In a possible implementation, the uplink reference signal is the SRS, and the first transmission parameter is the first path loss parameter. For example, the transmission power P0 (dB) of the SRS is known on the side of the first network device, and the power of the SRS received by the first network device is P1 (dB), then the first path loss parameter PL-1 = P1 - P0 or PL = P0 - P1 or PL = |P0 - P1|; if P0 and P1 are represented in decimal numbers, the first path loss parameter (PL) can also be determined by the following calculation method: PL = P1 / P0. Specifically, the first network device can configure the transmission power P0 of the SRS through downlink control information (DCI), or the terminal device uses the preconfigured default transmission power P0 to send the SRS.

[0107] In another possible implementation, the uplink reference signal is the PRACH, and the first transmission parameter is the first TA parameter, denoted as TA1. For example, by detecting the PRACH signal, the first network device can measure the signal transmission delay T1 of the current terminal device, and further calculate TA1 = T1 / 2.

[0108] S202: The second network device measures an uplink reference signal to determine a second transmission parameter corresponding to the second network device.

[0109] In a possible implementation, the uplink reference signal is SRS, and the second transmission parameter is a second path loss parameter. For example, the transmit power P0 (dB) of the SRS is known on the second network device side, and the SRS power received by the second network device is P1' (dB), then the second path loss parameter PL' = P1'-P0' or PL' = P0'-P1' or PL' = |P0'-P1'|; if the powers P0' and P1' are expressed in decimal numbers, the second path loss parameter (PL') can also be determined by the following calculation method: then PL' = P1' / P0'. Specifically, the first network device can configure the transmit power P0' of the SRS through DCI, or the terminal device uses the pre-configured default transmit power P0' to send the SRS.

[0110] In another possible implementation, the uplink reference signal is PRACH, and the second transmission parameter is a second TA parameter, denoted as TA2. For example, the second network device can measure the signal transmission delay T2 of the current terminal device by detecting the PRACH signal, and further calculate TA2=T2 / 2. It can be understood that the value of the first transmission parameter determined by the first network device in the above steps may be the same as or different from the value of the second transmission parameter. For example, in one possible implementation, if the state of the communication link between the terminal device and the first network device is the same as the state of the communication link between the terminal device and the second network device, or the path loss of the two communication links is similar, then the value of the first transmission parameter may be the same as or close to the value of the second transmission parameter, such as pre-setting a difference threshold denoted as the first threshold. In this implementation, the value of the first transmission parameter and the value of the second transmission parameter are less than or equal to the first threshold. For example, the transmission parameter is a path loss parameter, which is expressed in dB. The first threshold th=1dB, the first path loss parameter is PL=10dB, and the second path loss parameter is PL'=10.5dB. Then |PL-PL'| <th,满足约束条件。

[0111] For example, in another possible implementation, if the distance from the terminal device to the first network device is the same as or close to the distance from the terminal device to the second network device, the value of the first transmission parameter may be the same as or close to the value of the second transmission parameter, such as a pre-set difference threshold value recorded as the first threshold value. In this implementation, the value of the first transmission parameter and the value of the second transmission parameter are less than or equal to the first threshold value. For example, if the transmission parameter is the TA parameter, the first threshold value th = 1ns, TA1 = 100ns, TA2 = 100.5ns, then |TA1-TA2| <th满足约束条件。

[0112] By using the above method, the indication overhead of transmission parameters can be reduced.

[0113] S203, The second network device sends the fifth indication information to the first network device, and the fifth indication information is used to indicate the second transmission parameters corresponding to the second network device.

[0114] Specifically, the second network device can send the fifth indication information to the first network device through the X2 interface, the Xn-C interface, or the Xn-U interface.

[0115] S204, The first network device sends the third indication information to the terminal device.

[0116] Wherein, the third indication information is used to indicate the first transmission parameters corresponding to the first network device and the second transmission parameters corresponding to the second network device.

[0117] In a first possible implementation, the third indication information includes the first transmission parameters and the second transmission parameters. Accordingly, the terminal device can directly obtain the first transmission parameters and the second transmission parameters from the third indication information. For example, the transmission parameter is a path loss parameter, the first path loss parameter is PL = 20dB, and the second path loss parameter is PL' = 10dB. Another example is that the transmission parameter is a TA parameter, TA1 = 200ns, and TA2 = 100ns.

[0118] In a second possible implementation, the third indication information includes the first transmission parameter and the difference between the first transmission parameter and the second transmission parameter; or, the third indication information includes the second transmission parameter and the difference between the first transmission parameter and the second transmission parameter. Accordingly, the terminal device can determine the first transmission parameter and the second transmission parameter according to the third indication information. For example, if the transmission parameter is a path loss parameter, the first path loss parameter PL = 20 dB, and the difference between the first path loss parameter and the second path loss parameter Δ_PL = 5 dB, then the second path loss parameter PL' = 15 dB can be calculated. Another example is that if the transmission parameter is a TA parameter, TA1 = 200 ns, and the difference between TA1 and TA2 Δ_TA = 50 ns, then TA2 = 150 ns can be calculated. In addition, in a third possible implementation, if the difference between the first transmission parameter and the second transmission parameter determined by the first network device is less than or equal to the first threshold, then the third indication information may only include the first transmission parameter or the second transmission parameter, or it can also be understood that the network device ignores the difference between the first transmission parameter and the second transmission parameter and regards the first transmission parameter and the second transmission parameter as the same parameter when indicating, so only one of the two transmission parameters is indicated. Accordingly, the terminal device determines the one transmission parameter included in the third indication information as the first transmission parameter and the second transmission parameter. For example, if the transmission parameter is a path loss parameter, the first threshold th = 1 dB, the first path loss parameter PL = 10 dB, and the second path loss parameter PL' = 10.5 dB, then |PL - PL'| < th, which meets the constraint condition. At this time, the first network device only indicates 10 dB or 10.5 dB in the third indication information. Another example is that if the transmission parameter is a TA parameter, the first threshold th = 1 ns, TA1 = 100 ns, and TA2 = 100.5 ns, then |TA1 - TA2| < th meets the constraint condition. At this time, the first network device only indicates 100 ns or 100.5 ns in the third indication information.

[0119] S205. The first network device sends second indication information to the terminal device.

[0120] Specifically, the second indication information is used to indicate a first signal set corresponding to the first network device and a second signal set corresponding to the second network device. The first signal set includes one or more signals that the terminal device can send to the first network device. The first signal set can also be described as the signal set of the macro station TRP; the second signal set includes one or more signals that the terminal device can send to the second network device. The second signal set can also be described as the signal set of the UL-only TRP. For ease of implementation, several examples of the signal set of the macro station TRP (the first signal set) and the signal set of the UL-only TRP (the second signal set) are introduced below.

[0121] Example 1, signal sets of UL-only TRP: {PUSCH, PUCCH, SRS1}, signal sets of macro station TRP: {PRACH, SRS2}; among them, for an uplink signal SRS, it is divided into two different sets according to whether the receiver is a macro station TRP or a UL-only TRP, denoted as SRS1 and SRS2 respectively. Optionally, SRS1 and SRS2 have different functions. For example, the UL-only TRP can determine the uplink CSI according to SRS1, and the macro station TRP uses channel reciprocity to determine the downlink CSI according to SRS2.

[0122] Example 2: Signal sets of UL-only TRP: {PUSCH, SRS1}, signal sets of macro station TRP: {PUCCH, PRACH, SRS2}. Among them, the descriptions related to SRS1 and SRS2 can be understood with reference to Example 1, and the embodiments of the present application will not elaborate on this.

[0123] Example 3: Signal sets of UL-only TRP: {PUSCH, PUCCH1, SRS1}, signal sets of macro station TRP: {PUCCH2, PRACH, SRS2}. Among them, for an uplink signal PUCCH, it is divided into two different sets according to whether the receiver is a macro station TRP or a UL-only TRP, denoted as PUCCH 1 and PUCCH 2 respectively. The descriptions related to SRS1 and SRS2 can be understood with reference to Example 1, and the embodiments of the present application will not elaborate on this.

[0124] Example 4, signal sets of UL-only TRP: {PUSCH, PUCCH, CQI-RS}, signal sets of macro station TRP: {PRACH, SRS}.

[0125] Example 5: Signal sets of UL-only TRP: {PUSCH, CQI-RS}, signal sets of macro station TRP: {PUCCH, PRACH, SRS}.

[0126] Example 6: Signal sets of UL-only TRP: {PUSCH, PUCCH1, CQI-RS}, signal sets of macro station TRP: {PUCCH2, PRACH, SRS}.

[0127] In Examples 3 to 6 above, a new reference signal different from SRS is introduced and dedicated to uplink CSI measurement. For example, CQI-RS refers to a reference signal dedicated to uplink CSI measurement; SRS1 and SRS2 or PUCCH1 and PUCCH2 can be used to distinguish two channels or signals with different power control parameters but similar functions.

[0128] In a possible implementation, the first time-frequency resource for transmitting the signals in the first signal set and the second time-frequency resource for transmitting the signals in the second signal set are orthogonal time-frequency resources; alternatively, it can also be described as: the time-frequency positions mapped by the signals in the first signal set and the time-frequency positions mapped by the signals in the second signal set are orthogonal to each other, specifically, they can be orthogonal in time division or orthogonal in frequency division.

[0129] For example Figure 3 It is shown that the signals in the first signal set and the second signal set are orthogonal in time division, and there is an interval of one or more (orthogonal frequency division multiplexing, OFDM) symbols between the time-frequency positions mapped by the two uplink signals. Another example Figure 4 It is shown that the signals in the first signal set and the second signal set are orthogonal in frequency division; where Figure 4 (a) in shows that the time-frequency positions mapped by the signals in the two signal sets are different but there is no gap; Figure 4 (b) in shows that the time-frequency positions mapped by the signals in the two signal sets are different and there is a gap. It can be understood that Figure 4 the frequency-division orthogonal method shown in (b) can also be called comb-division orthogonal.

[0130] Further optionally, the terminal device can transmit the signals in the signal sets of at least one network device respectively according to the transmission parameters corresponding to the at least one network device. As an example, Figure 2 the optional steps S206 and S207 are shown by dashed lines in, that is, after the terminal device executes S201 to S205, it can execute S206 or S207, or execute S206 and S207.

[0131] S206, the terminal device sends a first uplink signal to the first network device according to the first transmission parameter.

[0132] It can be understood that the first uplink signal is the signal in the first signal set as described in S205.

[0133] In a possible implementation, when the first transmission parameter corresponding to S201 is described as the first path loss parameter, the terminal device can calculate the first transmission power used to send the first uplink signal to the first network device according to the first path loss parameter, and then send the first uplink signal to the first network device based on the first transmission power. Such a design is applied to the CSI measurement scenario, which can improve the accuracy of CSI measurement of the macro station TRP and the UL-only TRP, improve the uplink and downlink throughput, and can also reduce the power waste when the terminal device sends the uplink signal and reduce the power consumption of the terminal device.

[0134] In another possible implementation, corresponding to the case where the first transmission parameter is TA1 as described in S201, the terminal device can send the first uplink signal to the first network device in advance according to the TA1. Such a design is applied to the CSI measurement scenario. By adjusting the TA timing parameter, the accuracy of CSI measurement of the macro station TRP and the UL-only TRP can be improved, and the uplink and downlink throughput rates can be increased.

[0135] S207. The terminal device sends a second uplink signal to the second network device according to the second transmission parameter.

[0136] In one possible implementation, corresponding to the case where the second transmission parameter is the second path loss parameter as described in S201, the terminal device can calculate the second transmission power used to send the second uplink signal to the second network device according to the second path loss parameter, and then send the second uplink signal to the second network device based on the second transmission power. Such a design is applied to the CSI measurement scenario, which can improve the accuracy of CSI measurement of the macro station TRP and the UL-only TRP, increase the uplink and downlink throughput rates, and can also reduce the power waste when the terminal device sends the uplink signal and lower the power consumption of the terminal device.

[0137] In another possible implementation, corresponding to the case where the second transmission parameter is TA2 as described in S201, the terminal device can send the second uplink signal to the second network device in advance according to the TA2. Such a design is applied to the CSI measurement scenario. By adjusting the TA timing parameter, the accuracy of CSI measurement of the macro station TRP and the UL-only TRP can be improved, and the uplink and downlink throughput rates can be increased.

[0138] In addition, for S206 and S207, in an optional design, if the difference between the first transmission parameter and the second transmission parameter is less than or equal to the first threshold, the terminal device can send the first uplink signal and the second uplink signal with the same transmission power, that is, the transmission power used to send the first uplink signal is the same as the transmission power used to send the second uplink signal. For example, the transmission parameter is the path loss parameter, expressed in dB, the first threshold is th = 1 dB, the first path loss parameter is PL1 = 10 dB, and the second path loss parameter is PL2 = 10.5 dB, then |PL1 - PL2| < th, which meets the constraint condition. At this time, if the transmission power of the first uplink signal is P1 and the transmission power of the second uplink signal is P2, P1 can be set equal to P2.

[0139] For example, in the case where the transmission parameter refers to the path loss parameter, if the difference between the first path loss parameter and the second loss parameter is less than or equal to the first threshold, the terminal device may transmit the first uplink signal and the second uplink signal with the same transmission power. Another example is that in the case where the transmission parameter refers to the Timing Advance (TA) parameter, if the difference between TA1 and TA2 is less than or equal to the first threshold, the terminal device may transmit the first uplink signal and the second uplink signal with the same transmission power TA parameter. For example, the first transmission parameter is the TA parameter, the first threshold is th = 1 ns, TA1 = 100 ns, and TA2 = 100.5 ns. Then |TA1 - TA2| < th satisfies the constraint condition, and the terminal device can be set to use 100 ns or 100.5 ns as the timing advance for transmitting the first uplink signal and the second uplink signal.

[0140] It should be understood that the case range where the first transmission parameter and the second transmission parameter are less than or equal to the first threshold includes the case where the first transmission parameter and the second transmission parameter are the same.

[0141] In the above method, the uplink signals are divided into two signal sets corresponding to the macro station TRP and the UL-only TRP respectively, and the transmission parameters are configured respectively. At the same time, when the terminal device transmits signals, the signals in different signal sets are mapped to mutually orthogonal time-frequency resources to ensure that the terminal device can transmit these signals independently.

[0142] See Figure 5 Referring to the second communication method shown in the figure, the terminal device transmits uplink signals to the first network device and the second network device through different beams. This method mainly includes the following steps.

[0143] S501, the terminal device determines the first beam corresponding to the first network device and the second beam corresponding to the second network device.

[0144] In a first possible implementation, the terminal device can implement beamforming using one of the weighting methods of digital weights, analog weights, or digital-analog hybrid weights, thereby obtaining multiple transmission beams. In the embodiments of the present application, the transmission beam is simply referred to as a beam. Based on this, the terminal device can select different beams from the multiple beams to establish a corresponding relationship with the aforementioned two network devices. For example, the first beam is selected from the multiple beams to correspond to the first network device, and the second beam is selected from the multiple beams to correspond to the second network device. It can be understood that the identifiers of the first beam and the second beam are different. Exemplarily, the identifier of the first beam can be specifically represented by a beam ID (beam ID). For example, the identifier of the first beam is beam ID1, simply referred to as 1. The identifier of the second beam can be specifically represented by a beam ID. For example, the identifier of the second beam is beam ID2, simply referred to as 2. In this way, the energy of the uplink signal received by the macro station TRP and the UL-only TRP can be higher, improving the uplink transmission rate.

[0145] In a second possible implementation, the aforementioned first beam and second beam can be indicated by the first network device to the terminal device. For example, S501 can be divided into S501a and S501b; where S501a: The first network device sends the first indication information to the terminal device, and the first indication information is used to indicate the identifier of the first beam corresponding to the first network device and the identifier of the second beam corresponding to the second network device; where the identifiers of the first beam and the second beam are different; S501b: The terminal device determines the first beam and the second beam according to the first indication information. For example, the first network device can send DCI to the terminal device, and the DCI indicates that the beam ID of the first beam is 3 and the beam ID of the second beam is 2. Using this method, the macro station TRP can ensure that the transmission beam of the terminal device is accurate enough through indication, improving the transmission rate of the uplink signal.

[0146] In a third possible implementation, the first network device only indicates the identifier of the second beam, and the identifier of the first beam is determined by the terminal device according to the reception beam for receiving the downlink signal of the first network device. Based on this, the first network device sends the first indication information to the terminal device, and only the identifier of the second beam is indicated in the first indication information. Exemplarily, the identifier of the beam can be a beam ID, the first indication information is DCI, the first network device indicates in the DCI that the ID of the second beam is 4, and the reception beam ID used by the terminal device when receiving the DCI is 2, then the ID of the first beam is also 2. Using this method, the signaling indication overhead of the first network device (i.e., the macro station TRP) can be reduced.

[0147] In addition, it can be understood that in the second possible implementation and the third possible implementation, the identifier of the second beam can be reported by the second network device to the first network device. Specifically, it can be understood in the following manner: The second network device sends fourth indication information to the first network device, and the fourth indication information is used to indicate the identifier of the second beam. For example, the fourth indication information includes the identifier of the second beam, or the fourth indication information is indication information that can be used by the first network device to determine the identifier of the second beam. Optionally, the second network device (UL-only TRP) can send the fourth indication information to the first network device (macro station TRP) through the X2 interface, the Xn-C interface, or the Xn-U interface.

[0148] S502. The terminal device sends a first uplink signal to the first network device through the first beam.

[0149] It can be understood that this step can also be described as: The terminal device sends a first uplink signal to the first network device, and the beam used to send the first uplink signal is the first beam.

[0150] S503. The terminal device sends a second uplink signal to the second network device through the second beam.

[0151] It can be understood that this step can also be described as: The terminal device sends a second uplink signal to the second network device, and the beam used to send the first uplink signal is the second beam.

[0152] It should be understood that the execution order of S502 and S503 can be executed simultaneously, or S502 is executed first and then S503, or S503 is executed first and then S502. The embodiments of the present application do not limit this.

[0153] In addition, in a possible implementation, the first signal set and the second signal set can also be predefined or indicated by the first network device; wherein, the first signal set corresponds to the first network device, and the first signal set includes at least one signal that the terminal device can send to the first network device; the second signal set corresponds to the second network device, and the first signal set includes the second signal set that the terminal device can send to the second network device. Based on this, the first uplink signal sent by the terminal device can be any signal in the first signal set, that is, the first signal set includes the first uplink signal; the second uplink signal sent by the terminal device can be any signal in the second set, that is, the second signal set includes the second uplink signal.

[0154] Among them, examples of the first signal set and the second signal set can be understood with reference to Examples 1 to 6 described in S205, and this application embodiment will not elaborate on this. The first time-frequency resource for sending the signals in the first signal set and the second time-frequency resource for sending the signals in the second signal set are orthogonal time-frequency resources.

[0155] For example, if the first signal set includes PUCCH and the second signal set includes PUSCH, the terminal uses time-frequency resource 1 to send PUCCH to the first device through beam 1, and uses time-frequency resource 2 to send PUSCH to the second device through beam 2, and time-frequency resource 1 and time-frequency resource 2 are orthogonal to each other.

[0156] Another example, if the first signal set includes PUCCH1 and the second signal set includes PUCCH2, the terminal uses time-frequency resource 1 to send PUCCH1 to the first device through beam 1, and uses time-frequency resource 2 to send PUCCH2 to the second device through beam 2, and time-frequency resource 1 and time-frequency resource 2 are orthogonal to each other.

[0157] See Figure 6 For the third communication method shown schematically, the terminal device sends an uplink signal to the first network device based on beamforming, and does not perform beamforming when sending an uplink signal to the second network device. This method mainly includes the following steps.

[0158] S601, the terminal device determines a first beam corresponding to the first network device.

[0159] In a possible implementation, the terminal device can implement beamforming using one of the weighting methods of digital weights, analog weights, or digital-analog hybrid weights, so as to obtain multiple transmission beams. In this application embodiment, the transmission beam is simply referred to as a beam. Based on this, the terminal device can select a beam for sending the first uplink signal to the first network device from multiple beams, denoted as the first beam. Exemplarily, the identifier of the first beam can be specifically represented by a beam ID (beam ID). For example, the identifier of the first beam is beam ID 1, simply referred to as 1.

[0160] In another possible implementation, the foregoing first beam can be indicated by the first network device to the terminal device. For example, S601 can be divided into S601a and S601b, where S601a: the first network device sends first indication information to the terminal device, and this first indication information is used to indicate the first beam corresponding to the first network device; S60b: the terminal device determines the first beam according to the first indication information. For example, the first network device can send DCI to the terminal device, and the beam ID of the first beam indicated in the DCI is 3. In this way, the macro station TRP can ensure the accuracy of the sending beam of the terminal device through indication, and improve the transmission rate of the uplink signal.

[0161] S602, the terminal device sends a first uplink signal to a first network device via a first beam.

[0162] It can be understood that this step can also be described as: the terminal device sends a first uplink signal to a first network device, and the beam used for sending the first uplink signal is the first beam.

[0163] S603, the terminal device sends a second uplink signal to a second network device.

[0164] It can be understood that before the terminal device sends the second uplink signal to the second network device, beamforming is not performed, that is, the terminal device does not use a beam when sending the second uplink signal.

[0165] It should be understood that the execution order of S602 and S603 can be executed simultaneously, or S602 is executed first and then S603, or S603 is executed first and then S602. The embodiments of the present application do not limit this. For example, the first uplink signal is a PUCCH, the terminal device sends the PUCCH to a first network device (macro station TRP), and the beam ID used during transmission is 1; the second uplink signal is an SRS, the terminal device sends the SRS to a second network device (UL-only TRP), and no beam is used during transmission, that is, no beamforming is performed. In this scenario, since the UL-only TRP is closer to the terminal device, beamforming is not required to ensure that the UL-only TRP receives a second uplink signal with high energy, which can reduce interference to other terminal devices when the terminal device sends the second uplink signal.

[0166] In addition, in a possible implementation, a first signal set and a second signal set can be predefined or indicated by the first network device; wherein, the first signal set corresponds to the first network device, and the first signal set includes at least one signal that the terminal device can send to the first network device; the second signal set corresponds to the second network device, and the first signal set includes a second signal set that the terminal device can send to the second network device. Based on this, the first uplink signal sent by the terminal device can be any signal in the first signal set, that is, the first signal set includes the first uplink signal; the second uplink signal sent by the terminal device can be any signal in the second set, that is, the second signal set includes the second uplink signal.

[0167] Among them, examples of the first signal set and the second signal set can be understood with reference to Examples 1 to 6 described in S205, and the embodiments of the present application will not elaborate on this. The first time-frequency resource for sending the signals in the first signal set and the second time-frequency resource for sending the signals in the second signal set are orthogonal time-frequency resources.

[0168] For example, if the first signal set includes PUCCH and the second signal set includes PUSCH, when the terminal is in use, it sends PUCCH to the first device through beam 1 using time-frequency resource 1, and sends PUSCH to the second device through beam 2 using time-frequency resource 2, and time-frequency resource 1 and time-frequency resource 2 are orthogonal to each other.

[0169] For another example, if the first signal set includes PUCCH1 and the second signal set includes PUCCH2, when the terminal is in use, it sends PUCCH1 to the first device through beam 1 using time-frequency resource 1, and sends PUCCH2 to the second device through beam 2 using time-frequency resource 2, and time-frequency resource 1 and time-frequency resource 2 are orthogonal to each other.

[0170] Figure 7 Schematically, for the fourth communication method, the terminal device sends uplink signals to the first network device and the second network device using different beams and different transmission parameters. This method mainly includes the following steps.

[0171] S701: The first network device sends first indication information, and the terminal device receives the first indication information.

[0172] In a possible design, the first indication information is used to indicate the identifier of the first beam corresponding to the first network device and the identifier of the second beam corresponding to the second network device. Specifically, this step can be implemented with reference to the second possible implementation manner in S501, and this application embodiment will not elaborate on this.

[0173] In another possible design, the first indication information is only used to indicate the identifier of the second beam corresponding to the second network device. Specifically, this step can be implemented with reference to the third possible implementation manner in S501, and this application embodiment will not elaborate on this.

[0174] In addition, optionally, if the terminal device can obtain multiple beams by itself based on beamforming, it can select the first beam and the second beam from the multiple beams without step S701. Therefore, S701 can be regarded as an optional step, that is, it can be executed or not executed. Figure 7 S701 is schematically shown by a dashed line.

[0175] S702: The first network device sends third indication information, and the terminal device receives the third indication information.

[0176] Among them, the third indication information is used to indicate the first transmission parameter corresponding to the first network device and the second transmission parameter corresponding to the second network device. Specifically, step S702 can be implemented with reference to S204, and this application embodiment will not elaborate on this. Optionally, the first transmission parameter may be determined by the first network device based on the first uplink reference signal sent by the terminal device through the first beam; the second transmission parameter may be determined by the second network device based on the second uplink reference signal sent by the terminal device through the second beam, and after determining the second transmission parameter, the second network device indicates the second transmission parameter to the first network device.

[0177] Taking the uplink reference signal as SRS, the SRS sent by the terminal device to the first network device (macro station TRP) is SRS1, and the SRS sent by the terminal device to the second network device (UL-only TRP) is SRS2. The beam used by the terminal device to send SRS1 is the same as the beam used by the terminal device to send the first uplink signal to the first network device, and the beam used by the terminal device to send SRS2 is the same as the beam used by the terminal device to send the second uplink signal to the second network device; if no beamforming is performed when sending the first uplink signal or the second uplink signal, then no beamforming is performed when sending SRS1 or SRS2. For example, if the first uplink signal is PUCCH and the beam ID used is 1, and the second uplink signal is PUSCH and the beam ID used is 2, then the beam ID used to send SRS1 is 1, and the beam ID used to send SRS2 is 2.

[0178] S703. The terminal device sends a first uplink signal to the first network device through the first beam according to the first transmission parameter.

[0179] This step can be implemented with reference to S206 and S502, and this application embodiment will not elaborate on this.

[0180] S704. The terminal device sends a second uplink signal to the second network device through the second beam according to the second transmission parameter.

[0181] This step can be implemented with reference to S207 and S503, and this application embodiment will not elaborate on this.

[0182] It should be understood that the execution order of S703 and S704 can be simultaneous execution, or S703 is executed first and then S704, or S704 is executed first and then S703. The embodiments of the present application do not limit this. In addition, the first signal set and the second signal set can be predefined or indicated by the first network device; wherein, the first signal set corresponds to the first network device, and the first signal set includes at least one signal that the terminal device can send to the first network device; the second signal set corresponds to the second network device, and the first signal set includes the second signal set that the terminal device can send to the second network device. Based on this, the first uplink signal sent by the terminal device can be any signal in the first signal set, that is, the first signal set includes the first uplink signal; the second uplink signal sent by the terminal device can be any signal in the second set, that is, the second signal set includes the second uplink signal.

[0183] Among them, examples of the first signal set and the second signal set can be understood with reference to Examples 1 to 6 described in S205, and the embodiments of the present application will not elaborate on this. The first time-frequency resource for sending the signal in the first signal set and the second time-frequency resource for sending the signal in the second signal set are orthogonal time-frequency resources.

[0184] For example, if the first signal set includes PUCCH and the second signal set includes PUSCH, then the terminal uses time-frequency resource 1 to send PUCCH to the first device through beam 1, and uses time-frequency resource 2 to send PUSCH to the second device through beam 2, and time-frequency resource 1 and time-frequency resource 2 are orthogonal to each other.

[0185] For another example, if the first signal set includes PUCCH1 and the second signal set includes PUCCH2, then the terminal uses time-frequency resource 1 to send PUCCH1 to the first device through beam 1, and uses time-frequency resource 2 to send PUCCH2 to the second device through beam 2, and time-frequency resource 1 and time-frequency resource 2 are orthogonal to each other.

[0186] Based on the same concept, referring to Figure 8 , the embodiments of the present application provide a communication device 800, and the communication device 800 includes a processing module 801 and a communication module 802. The communication device 800 can be a terminal device, or can be applied to a terminal device or used in combination with a terminal device, and can implement a communication method executed on the terminal device side; or, the communication device 800 can be a network device, or can be applied to a network device or used in combination with a network device, and can implement a communication method executed on the network device side.

[0187] Among them, the communication module can also be referred to as a transceiver module, transceiver, transceiver unit, or transceiver device, etc. The processing module can also be referred to as a processor, processing board, processing unit, or processing device, etc. Optionally, the communication module is used to perform the sending operation and receiving operation on the terminal device side or network device side in the above method. The components in the communication module used to implement the receiving function can be regarded as the receiving unit, and the components used to implement the sending function can be regarded as the sending unit, that is, the communication module includes a receiving unit and a sending unit.

[0188] When the communication device 800 is applied to a terminal device, the processing module 801 can be used to implement Figure 2 , Figure 5 , Figure 6 and Figure 7 the processing functions of the terminal device described in the embodiments shown in Figure 2 , Figure 5 , Figure 6 and Figure 7 . Or the communication device can also be understood with reference to the third aspect in the invention content and the possible designs in the third aspect.

[0189] When the communication device 800 is applied to a network device, the processing module 801 can be used to implement Figure 2 , Figure 5 , Figure 6 and Figure 7 the processing functions of the network device described in the embodiments shown in Figure 2 , Figure 5 , Figure 6 and Figure 7 . Or the communication device can also be understood with reference to the fourth aspect in the invention content and the possible designs in the fourth aspect.

[0190] In addition, it should be noted that the foregoing communication module and / or processing module can be implemented by a virtual module. For example, the processing module can be implemented by a software functional unit or a virtual device, and the communication module can be implemented by a software function or a virtual device. Or, the processing module or the communication module can also be implemented by a physical device. For example, if the communication device is implemented by a chip / chip circuit, the communication module can be an input / output circuit and / or a communication interface, performing input operations (corresponding to the foregoing receiving operations) and output operations (corresponding to the foregoing sending operations); the processing module is an integrated processor or microprocessor or integrated circuit.

[0191] In the embodiments of the present application, the division of modules is illustrative, merely a logical function division. In actual implementation, there may be other division methods. Additionally, in each embodiment of the present application, each functional module may be integrated in a processor, may exist independently physically, or two or more modules may be integrated in one module. The above integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0192] Based on the same inventive concept, the embodiments of the present application further provide a communication device 900. For example, the communication device 900 may be a chip or a chip system. Optionally, in the embodiments of the present application, the chip system may be composed of chips or may include chips and other discrete devices.

[0193] The communication device 900 can be used to implement the functions of any network element in the communication system described in the foregoing embodiments. The communication device 900 may include at least one processor 910, and the processor 910 is coupled to the memory. Optionally, the memory may be located within the communication device, the memory may be integrated with the processor, or the memory may be located outside the communication device. For example, the communication device 900 may further include at least one memory 920. The memory 920 stores the necessary computer programs, computer programs or instructions and / or data in any of the foregoing embodiments; the processor 910 may execute the computer programs stored in the memory 920 to complete the methods in any of the foregoing embodiments.

[0194] The communication device 900 may further include a communication interface 930, and the communication device 900 may interact with other devices through the communication interface 930. Exemplarily, the communication interface 930 may be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces. When the communication device 900 is a chip-like device or a circuit, the communication interface 930 in the communication device 900 may also be an input / output circuit, which can input information (or receive information) and output information (or send information), and the processor is an integrated processor, a microprocessor, an integrated circuit, or a logic circuit, and the processor may determine the output information according to the input information.

[0195] The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be electrical, mechanical, or other forms, and is used for information interaction between devices, units, or modules. The processor 910 may cooperate with the memory 920 and the communication interface 930. In the embodiments of the present application, the specific connection medium between the above processor 910, memory 920, and communication interface 930 is not limited.

[0196] Optionally, refer to Figure 9, the processor 910, the memory 920, and the communication interface 930 are interconnected with each other through a bus 940. The bus 940 may be a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity of representation, Figure 9 only a thick line is used to represent it in Figure 9 , but it does not mean that there is only one bus or one type of bus.

[0197] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0198] In the embodiments of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory, such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data.

[0199] In a possible implementation manner, the communication device 900 may be applied to a first network device. Specifically, the communication device 900 may be the first network device, or may be a device capable of supporting the first network device and implementing the functions of the first network device in any of the above-mentioned embodiments. The memory 920 stores a computer program (or instructions) and / or data for implementing the functions of the first network device in any of the above-mentioned embodiments. The processor 910 may execute the computer program stored in the memory 920 to complete the methods executed by the first network device in any of the above-mentioned embodiments. When applied to the first network device, the communication interface in the communication device 900 may be used to interact with a terminal device, send information to the terminal device, or receive information from the terminal device.

[0200] In a possible implementation, the communication device 900 can be applied to a second network device. Specifically, the communication device 900 can be the second network device or a device capable of supporting the second network device to implement the functions of the second network device in any of the above-mentioned embodiments. The memory 920 stores computer programs (or instructions) and / or data for implementing the functions of the second network device in any of the above-mentioned embodiments. The processor 910 can execute the computer programs stored in the memory 920 to complete the methods executed by the second network device in any of the above-mentioned embodiments. When applied to the second network device, the communication interface in the communication device 900 can be used to receive information from the terminal device.

[0201] In a possible implementation, the communication device 900 can be applied to a terminal device. Specifically, the communication device 900 can be the terminal device or a device capable of supporting the terminal device to implement the functions of the terminal device in any of the above-mentioned embodiments. The memory 920 stores computer programs (or instructions) and / or data for implementing the functions of the terminal device in any of the above-mentioned embodiments. The processor 910 can execute the computer programs stored in the memory 920 to complete the methods executed by the terminal device in any of the above-mentioned embodiments. When applied to the terminal device, the communication interface in the communication device 900 can be used to interact with the network device, send information to the network device or receive information from the network device.

[0202] Since the communication device 900 provided in this embodiment can be applied to the first network device to complete the methods executed by the first network device above, or applied to the first network device to complete the methods executed by the first network device above, or applied to the terminal device to complete the methods executed by the terminal device. Therefore, the technical effects it can obtain can refer to the above method examples and will not be elaborated here.

[0203] Based on the above embodiments, an embodiment of the present application provides a communication system, including a network device and a terminal device, where the network device and the terminal device can implement Figure 2 、 Figure 5 、 Figure 6 and Figure 7 the methods provided in the embodiments shown.

[0204] The technical solutions provided by the embodiments of this application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a terminal device, a network device, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or a wireless manner (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital video disc (DVD)), or a semiconductor medium, etc.

[0205] In the embodiments of this application, on the premise of no logical contradiction, the embodiments can reference each other. For example, the methods and / or terms between method embodiments can reference each other, the functions and / or terms between device embodiments can reference each other, and the functions and / or terms between device embodiments and method embodiments can reference each other.

[0206] Obviously, those skilled in the art can make various changes and modifications to the embodiments of this application without departing from the scope of the embodiments of this application. Thus, if these modifications and variations of the embodiments of this application fall within the scope of the claims of the embodiments of this application and their equivalent technologies, the embodiments of this application also intend to include these changes and modifications.

Claims

1. A communication method, characterized in that, Applied to a terminal device, including: Sending a first uplink signal to a first network device; sending a second uplink signal to a second network device; Wherein, the beam for sending the first uplink signal is a first beam, and the beam for sending the second uplink signal is a second beam, and the identifier of the first beam is different from the identifier of the second beam; the first network device supports sending downlink signals, and the second network device does not support sending downlink signals.

2. The method according to claim 1, wherein Further including: Receiving first indication information, where the first indication information is used to indicate the identifier of the first beam corresponding to the first network device and the identifier of the second beam corresponding to the second network device; or, the first indication information is used to indicate the identifier of the second beam corresponding to the second network device.

3. The method according to claim 1 or 2, characterized in that Further including: Receiving second indication information, where the second indication information is used to indicate a first signal set corresponding to the first network device and a second signal set corresponding to the second network device, the first signal set includes the first uplink signal, and the second signal set includes the second uplink signal.

4. The method according to claim 3, characterized in that, The first time-frequency resource for sending the signals in the first signal set and the second time-frequency resource for sending the signals in the second signal set are orthogonal time-frequency resources.

5. The method according to any one of claims 1-4, characterized in that, Further including: Receiving third indication information, where the third indication information is used to indicate a first transmission parameter corresponding to the first network device and a second transmission parameter corresponding to the second network device; The step of sending the first uplink signal to the first network device includes: sending the first uplink signal to the first network device according to the first transmission parameter; The step of sending the second uplink signal to the second network device includes: sending the second uplink signal to the second network device according to the second transmission parameter.

6. The method according to claim 5, characterized in that Before receiving the third indication information, further including: Sending a first uplink reference signal through the first beam, where the first uplink reference signal is used to determine the first transmission parameter; Sending a second uplink reference signal through the second beam, where the second uplink reference signal is used to determine the second transmission parameter.

7. The method according to claim 5 or 6, characterized in that, The third indication information includes: The first transmission parameter and the second transmission parameter; or, The first transmission parameter and the difference between the first transmission parameter and the second transmission parameter; or, The second transmission parameter and the difference between the second transmission parameter and the first transmission parameter.

8. The method according to any one of claims 5 to 7, characterized in that, When the difference between the first transmission parameter and the second transmission parameter is less than or equal to a first threshold, the transmission power for sending the first uplink signal is the same as the transmission power for sending the second uplink signal; or, When the difference between the first transmission parameter and the second transmission parameter is greater than the first threshold, the transmission power for sending the first uplink signal is different from the transmission power for sending the second uplink signal.

9. A communication method, characterized in that, Applied to a first network device, including: Send first indication information, where the first indication information is used to indicate the identifier of a first beam corresponding to the first network device and the identifier of a second beam corresponding to the second network device; wherein, the first network device supports sending downlink signals, and the second network device does not support sending downlink signals; Receive a first uplink signal sent by the terminal device via the first beam.

10. The method according to claim 9, characterized in that, Further includes: Receive fourth indication information from the second network device, where the fourth indication information is used to indicate the identifier of the second beam corresponding to the second network device.

11. The method according to claim 9 or 10, characterized in that, Further includes: Send second indication information, where the second indication information is used to indicate a first signal set corresponding to the first network device and a second signal set corresponding to the second network device, the first signal set includes the first uplink signal; the second signal set includes the second uplink signal.

12. The method according to claim 11, wherein The first time-frequency resource for receiving signals in the first signal set and the second time-frequency resource for receiving signals in the second signal set are orthogonal time-frequency resources.

13. The method according to any one of claims 9 to 12, characterized in that, Further includes: Send third indication information, where the third indication information is used to indicate a first transmission parameter corresponding to the first network device and a second transmission parameter corresponding to the second network device; Receive the first uplink signal sent by the terminal device based on the first transmission parameter.

14. The method according to claim 13, characterized in that, Before sending the third indication information, further includes: Receive a first uplink reference signal sent by the terminal device via the first beam; Determine the first transmission parameter according to the first uplink reference signal.

15. The method according to claim 13 or 14, characterized in that Further includes: Receive fifth indication information, where the fifth indication information is used to indicate the second transmission parameter corresponding to the second network device.

16. The method according to any one of claims 13 to 15, characterized in that, The third indication information includes: The first transmission parameter and the second transmission parameter; or, The first transmission parameter and the difference between the first transmission parameter and the second transmission parameter; or, The second transmission parameter and the difference between the second transmission parameter and the first transmission parameter.

17. A communication method, characterized in that, Applied to the second network device, includes: Send fourth indication information to the first network device, where the fourth indication information is used to indicate the identifier of the second beam corresponding to the second network device, so that the first network device indicates the identifier of the second beam to the terminal device; wherein, the first network device supports sending downlink signals, and the second network device does not support sending downlink signals; Receive a second uplink signal sent by the terminal device via the second beam.

18. The method according to claim 17, wherein Further includes: Send fifth indication information to the first network device, where the fifth indication information indicates the second transmission parameter corresponding to the second network device, so that the first network device sends third indication information to the terminal device, and the third indication information is used to indicate the first transmission parameter corresponding to the first network device and the second transmission parameter corresponding to the second network device; Receive the second uplink signal sent by the terminal device based on the second transmission parameter.

19. The method according to claim 17 or 18, characterized in that, Before sending the third indication information, further includes: Receive a second uplink reference signal sent by the terminal device via the second beam; Determine the second transmission parameter according to the second uplink reference signal.

20. A communication device, characterized in that, Comprising a module for performing the method according to any one of claims 1-8.

21. A communication device, characterized in that, Comprising a module for performing the method according to any one of claims 9-16.

22. A communication device, characterized in that, Comprising a module for performing the method according to any one of claims 17-19.

23. A communication device, characterized in that, Comprising: A processor, which is configured to execute a computer program or instructions in a memory to implement the method according to any one of claims 1-19.

24. A computer-readable storage medium, characterized in that, Instructions are stored on the computer-readable storage medium, and when the instructions are run on a computer, the computer is caused to execute the method according to any one of claims 1-19.

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