Communication method and related device

Abstract

The invention provides a communication method and a communication device, which are applied to the technical field of communication. In the technical scheme provided by the invention, terminal equipment receives configuration information, the configuration information comprises related parameters of one or more first resources, the first resources are uplink path loss measurement resources, and each first resource corresponds to one first signal; the terminal equipment sends a first signal corresponding to one or more first resources; and receiving first indication information, wherein the first indication information is used for indicating the path loss value or the receiving power corresponding to the at least one first resource. In the application, the terminal device can determine the uplink transmission path loss value between the network device only having the uplink communication function and the terminal device.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to communication methods and related devices. Background Art

[0002] During the communication between the base station and the terminal, the terminal needs to determine the uplink path loss on the transmission path between the terminal and the base station, and then determine the transmission power when sending the signal to the base station, so as to ensure the receiving power of the signal reaching the base station.

[0003] The commonly used method for determining the uplink path loss of a terminal is as follows: the base station sends a path loss measurement signal; the terminal measures the power of the received path loss measurement signal, and uses a difference or ratio to determine the downlink path loss on the transmission path of the path loss measurement signal from the base station to the terminal, and then uses the downlink path loss as the uplink path loss.

[0004] However, the existing technology is not applicable to the scenario where the network equipment does not have the capability of downlink transmission, so how to determine the uplink path loss between the terminal and the base station in this scenario becomes a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a communication method, a communication device and a communication system, which can determine the uplink path loss between a terminal and a base station, thereby improving communication performance.

[0006] In a first aspect, the present application provides a communication method and a related device, the method being applied in a terminal device. The method comprises: the terminal device receives configuration information from a network device, the configuration information comprising related parameters of one or more first resources, wherein the first resource is an uplink path loss measurement resource, and each of the one or more first resources corresponds to a first signal; sends a first signal corresponding to the one or more first resources; receives first indication information, the first indication information being used to indicate a path loss value or receiving power corresponding to at least one of the one or more first resources.

[0007] In this method, the terminal device can obtain the first resource used as an uplink path loss measurement resource based on the configuration of the network device, so that it can send a first signal for path loss measurement based on the first resource, and obtain from the network device the path loss value of the first signal determined by the network device or the receiving power of the first signal, and then determine the uplink path loss value of the first signal, and finally determine the uplink path loss value between the terminal device and the network device.

[0008] In some implementations, the first resource is a sounding reference signal (SRS) resource.

[0009] In some implementations, the related parameters of the first resource include a first parameter, where the first parameter is used to indicate that the first resource is an uplink path loss measurement resource.

[0010] In some implementations, the first parameter is a type parameter used to indicate the type of the first resource. When the type indicated by the first parameter is the first type, it indicates that the first resource is an uplink path loss measurement resource.

[0011] In some implementations, the configuration information is used to configure uplink path loss measurement resources associated with uplink signal resources, and the uplink signal resources include at least one of the following resources: SRS resources, physical uplink control channel PUCCH resources, physical uplink shared channel PUSCH resources, demodulation reference signal DMRS resources, or physical random access channel PRACH resources.

[0012] In some implementations, the uplink signal resource includes an SRS resource. If the configuration information does not configure an uplink path loss measurement resource associated with the SRS resource, the SRS resource is an uplink path loss measurement resource.

[0013] In some implementations, before sending a first signal corresponding to one or more first resources, the method further includes: the terminal device determines a transmission power of the first signal.

[0014] Optionally, the transmission power of the first signal is the first transmission power configured by the configuration information, or the transmission power determined according to the path loss corresponding to the first resource.

[0015] In some possible implementations, when the first condition is met, the transmission power of the first signal is the first transmission power; when the first condition is not met, the transmission power of the first signal is the transmission power determined by the path loss value corresponding to the first resource.

[0016] Among them, the first condition includes one or more of the following conditions: the initial first indication information has been received by the terminal device; the initial first indication information has taken effect; the terminal device knows the path loss value corresponding to the first resource; the terminal device has received indication information containing the path loss value corresponding to the first resource within a period of time in the past; the timer corresponding to the first resource has not timed out, and the timer is a timer used to maintain the path loss value corresponding to the first resource.

[0017] In some implementations, the first indication information includes an index of each first resource in the at least one first resource and path loss information corresponding to each first resource.

[0018] In some implementations, for a first resource having the largest path loss value or the smallest path loss value among at least one first resource, the first indication information includes the path loss value of the first resource; for any other first resource among at least one first resource, the first indication information includes the difference between the path loss value of any other first resource and the path loss value of the first resource.

[0019] In some implementations, the first indication information includes an index of each first resource in at least one first resource and a receiving power corresponding to each first resource; the terminal device calculates a path loss value corresponding to the at least one first resource based on the receiving power of the at least one first resource.

[0020] In some implementations, for a first resource having the largest received power or the smallest received power among at least one first resource, the first indication information includes the received power of the first resource; for any other first resource among at least one first resource, the first indication information includes the difference between the received power of any other first resource and the received power of the first resource.

[0021] In a second aspect, the present application provides a communication method, which is applied to a network device. The method includes: sending configuration information, the configuration information including relevant parameters of one or more first resources, the first resource is an uplink path loss measurement resource, and each of the one or more first resources corresponds to a first signal; receiving a first signal corresponding to the one or more first resources; sending first indication information, the first indication information is used to indicate a path loss value or a received power corresponding to at least one first resource.

[0022] This method can enable the network device to determine the uplink path loss value of the first signal, and ultimately determine the uplink path loss value between the terminal device and the network device.

[0023] In some implementations, the first resource is a sounding reference signal (SRS) resource.

[0024] In some implementations, the related parameters of the first resource include a first parameter, where the first parameter is used to indicate that the first resource is an uplink path loss measurement resource.

[0025] In some implementations, the first parameter is a type parameter, and the type parameter is used to indicate the type of the first resource. When the type indicated by the first parameter is the first type, it indicates that the first resource is an uplink path loss measurement resource.

[0026] In some implementations, the configuration information is used to configure uplink path loss measurement resources associated with uplink signal resources, and the uplink signal resources include at least one of the following resources: SRS resources, physical uplink control channel PUCCH resources, physical uplink shared channel PUSCH resources, demodulation reference signal DMRS resources, or physical random access channel PRACH resources.

[0027] In some implementations, the uplink signal resource includes an SRS resource. If the configuration information does not configure an uplink path loss measurement resource associated with the SRS resource, the SRS resource is an uplink path loss measurement resource.

[0028] In some implementations, before sending the first indication information, the method further includes: determining a transmission power of the first signal.

[0029] In some implementations, the transmit power of the first signal is the first transmit power configured by the configuration information, or the transmit power determined according to the path loss corresponding to the first resource.

[0030] In some implementations, when the first condition is met, the transmission power of the first signal is the first transmission power; when the first condition is not met, the transmission power of the first signal is the transmission power determined by the path loss value corresponding to the first resource.

[0031] Among them, the first condition includes one or more of the following conditions: the initial first indication information has been received by the terminal device; the initial first indication information has taken effect; the terminal device knows the path loss value corresponding to the first resource; the terminal device has received indication information containing the path loss value corresponding to the first resource within a period of time in the past; or, the timer corresponding to the first resource has not timed out, and the timer is a timer used to maintain the path loss value corresponding to the first resource.

[0032] In some implementations, the first indication information includes an index of each first resource in the at least one first resource, and path loss information corresponding to each first resource.

[0033] In some implementations, for a first resource having the largest path loss value or the smallest path loss value among the at least one first resource, the first indication information includes the path loss value of the first resource; for any other first resource among the at least one first resource, the first indication information includes the difference between the path loss value of any other first resource and the path loss value of the first resource.

[0034] In some implementations, the first indication information includes an index of each first resource in the at least one first resource, and a receiving power corresponding to each first resource.

[0035] In some implementations, for a first resource having the largest received power or the smallest received power among the at least one first resource, the first indication information includes the received power of the one first resource; for any other first resource among the at least one first resource, the first indication information includes the difference between the received power of any other first resource and the received power of the one first resource.

[0036] In a third aspect, the present application provides a communication device, including modules or units for implementing the method in the first aspect and any possible implementation of the first aspect. It should be understood that each module or unit can implement the corresponding function by executing a computer program.

[0037] In a fourth aspect, the present application provides a communication device, including a module or unit for implementing the method in the second aspect and any possible implementation of the second aspect. It should be understood that each module or unit can implement the corresponding function by executing a computer program.

[0038] In a fifth aspect, the present application provides a communication device, including a processor, wherein the processor is used to execute the communication method described in the first aspect or any possible implementation of the first aspect. The communication device may be a chip or a chip system applied to a terminal device.

[0039] The device may also include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the method described in the first aspect or any possible implementation thereof may be implemented. The device may also include a communication interface, and the communication interface is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface.

[0040] In a sixth aspect, the present application provides a communication device, including a processor, wherein the processor is used to execute the communication method described in the second aspect or any possible implementation of the second aspect. The communication device may be a chip or a chip system applied to a network device.

[0041] The device may further include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the method described in the second aspect or any possible implementation thereof may be implemented. The device may further include a communication interface, and the communication interface is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface.

[0042] In a seventh aspect, the present application provides a computer-readable storage medium storing a program code for execution by a communication device, wherein the program code includes instructions for implementing the method in the first aspect and any possible implementation manner of the first aspect.

[0043] In an eighth aspect, the present application provides a computer-readable storage medium storing a program code for execution by a communication device, wherein the program code includes instructions for implementing the method in the second aspect and any possible implementation manner of the second aspect.

[0044] In a ninth aspect, the present application provides a computer program product comprising instructions, which, when executed on a communication device, enables the communication device to implement the method in the first aspect and any possible implementation manner of the first aspect.

[0045] In a tenth aspect, the present application provides a computer program product comprising instructions, which, when executed on a communication device, enables the communication device to implement the method in the second aspect and any possible implementation manner of the second aspect.

[0046] In an eleventh aspect, the present application provides a communication system, which includes a communication device for implementing the method in the first aspect and any possible implementation of the first aspect and / or a communication device for implementing the method in the second aspect and any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic diagram of a communication system applicable to the method of an embodiment of the present application;

[0048] Figure 2 is a schematic diagram of another communication system applicable to the method of the embodiment of the present application;

[0049] Figure 3 A schematic flow chart of a communication method provided in one embodiment of the present application;

[0050] Figure 4 A schematic flow chart of a communication method provided in one embodiment of the present application;

[0051] Figure 5 This is a schematic diagram of the structure of a communication device according to an embodiment of the present application;

[0052] Figure 6 A schematic diagram of the structure of a communication device provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0054] In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0055] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0056] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and / or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0057] To facilitate understanding of the communication method provided in the embodiment of the present application, the system architecture and application scenarios of the communication method provided in the embodiment of the present application are described below. It is understandable that the system architecture and application scenarios described in the embodiment of the present application are to more clearly illustrate the technical solution of the embodiment of the present application, and do not constitute a limitation on the technical solution provided in the embodiment of the present application.

[0058] The technical solution provided in the present application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) or new radio (new radio, NR) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, wireless local area network (wireless local area network, WLAN) system, satellite communication system, future communication system, such as the sixth generation (6th generation, 6G) mobile communication system, or a fusion system of multiple systems, etc. The technical solution provided in the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of things (IoT) communication system or other communication systems.

[0059] A device in a communication system can send a signal to another device or receive a signal from another device. The signal may include information, signaling, or data. The device may also be replaced by an entity, a network entity, a communication device, a communication module, a node, a communication node, etc. The present application takes the device as an example for description. For example, the communication system may include at least one terminal device and at least one network device. The network device may send a downlink signal to the terminal device, and / or the terminal device may send an uplink signal to the network device.

[0060] In an embodiment of the present application, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.

[0061] The terminal device may be a device that provides voice / data, such as a handheld device or a vehicle-mounted device with a wireless connection function. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (public land mobile The embodiments of the present application do not limit this.

[0062] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0063] In the embodiment of the present application, the device for realizing the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, which may be installed in the terminal device or used in combination with the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the embodiment of the present application, only the device for realizing the function of the terminal device is used as an example for explanation, and the scheme of the embodiment of the present application is not limited.

[0064] The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be referred to as an access network device or a wireless access network device, such as a base station. The network device in the embodiment of the present application may refer to a wireless access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station, auxiliary station, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), radio unit (RU), positioning node, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station may also refer to a communication module, modem or chip used to be set in the aforementioned equipment or device. The base station may also be a mobile switching center and a device that performs the base station function in D2D, V2X, and M2M communications, a network side device in a 6G network, and a device that performs the base station function in future communication systems. The base station can support networks with the same or different access technologies. Optionally, the RAN node may also be a server, a wearable device, a vehicle or an on-board device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU). The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.In some deployments, the network device mentioned in the embodiments of the present application may be a device including a CU, or a DU, or a device including a CU and a DU, or a device including a control plane CU node (central unit control plane (central unit-control plane, CU-CP)) and a user plane CU node (central unit user plane (central unit-user plane, CU-UP)) and a DU node. For example, the network device may include a gNB-CU-CP, a gNB-CU-UP, and a gNB-DU.

[0065] In some deployments, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes implement part of the functions of the base station. For example, the RAN node can be a CU, DU, CU-CP, CU-UP, or RU. The CU and DU can be set separately, or can also be included in the same network element, such as a BBU. The RU can be included in a radio frequency device or a radio frequency unit, such as an RRU, AAU, or RRH.

[0066] The RAN node may support one or more types of fronthaul interfaces, and different fronthaul interfaces correspond to DUs and RUs with different functions. If the fronthaul interface between the DU and the RU is a common public radio interface (CPRI), the DU is configured to implement one or more baseband functions, and the RU is configured to implement one or more radio frequency functions. If the fronthaul interface between the DU and the RU is another interface, relative to the CPRI, part of the downlink and / or uplink baseband functions, such as, for downlink, one or more of precoding, digital beamforming (BF), or inverse fast Fourier transform (IFFT) / cyclic prefix (CP) are moved from the DU to the RU for implementation, and for uplink, one or more of digital beamforming (BF), or fast Fourier transform (FFT) / cyclic prefix (CP) are moved from the DU to the RU for implementation. In a possible implementation, the interface may be an enhanced common public radio interface (eCPRI). In the eCPRI architecture, the division between DU and RU is different, corresponding to different types (category, Cat) of eCPRI, such as eCPRI Cat A, B, C, D, E, F.

[0067] Taking eCPRI Cat A as an example, for downlink transmission, based on layer mapping, the DU is configured to implement layer mapping and one or more functions before it (i.e., one or more functions of coding, rate matching, scrambling, modulation, and layer mapping), while other functions after layer mapping (e.g., RE mapping, digital beamforming (BF), or one or more functions of inverse fast Fourier transform (IFFT) / adding cyclic prefix (CP)) are moved to the RU for implementation. For uplink transmission, based on de-RE mapping, the DU is configured to implement de-mapping and one or more functions before it (i.e., one or more functions of decoding, de-rate matching, de-scrambling, demodulation, inverse discrete Fourier transform (IDFT), channel equalization, and de-RE mapping), while other functions after de-mapping (e.g., one or more functions of digital BF or fast Fourier transform (FFT) / removing CP) are moved to the RU for implementation. It can be understood that for the functional description of DU and RU corresponding to various types of eCPRI, reference can be made to the eCPRI protocol and will not be repeated here.

[0068] In one possible design, the processing unit for implementing the baseband function in the BBU is called a baseband high layer (BBH) unit, and the processing unit for implementing the baseband function in the RRU / AAU / RRH is called a baseband low layer (BBL) unit.

[0069] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. Any unit in the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0070] In the embodiments of the present application, the device for realizing the function of the network device may be a network device; or it may be a device capable of supporting the network device to realize the function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module. The device may be installed in the network device or used in combination with the network device. In the embodiments of the present application, only the device for realizing the function of the network device is a network device as an example for explanation, and the scheme of the embodiments of the present application is not limited.

[0071] The network device and / or terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on the water surface; it can also be deployed on aircraft, balloons and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in the embodiments of the present application. In addition, the terminal device and the network device can be hardware devices, or they can be software functions running on dedicated hardware, software functions running on general-purpose hardware, such as virtualization functions instantiated on a platform (e.g., a cloud platform), or entities including dedicated or general-purpose hardware devices and software functions. The present application does not limit the specific forms of the terminal device and the network device.

[0072] In the embodiment of the present application, beam refers to a special directional transmission or reception effect formed by a transmitter or receiver of a network device or terminal device through an antenna array, just like a flashlight converges light in one direction to form a beam. Sending and receiving signals in the form of beams can effectively increase the transmission distance of signals.

[0073] In addition, the beam may be a wide beam, a narrow beam, or other types of beams. The technology for forming the beam may be a beamforming technology or other technologies. The beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital / analog beamforming technology.

[0074] Beams generally correspond to resources. For example, when performing beam measurement, the network device measures different beams through different resources. The terminal device feeds back the measured resource quality, and the network device knows the quality of the corresponding beam. During data transmission, beam information is also indicated by its corresponding resources. For example, the network device indicates a TCI-state through the TCI field in the DCI, and the terminal device determines the reference resource contained in the TCI-state to determine the beam of data.

[0075] In the communication protocol, the beam can be specifically characterized as a digital beam, an analog beam, a spatial domain filter, a spatial filter, a spatial parameter, a transmission configuration indication (TCI), a transmission configuration indication-state (TCI-state), etc. The beam used to send a signal can be called a transmission beam (or Tx beam), a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, a spatial transmission parameter, etc. The beam used to receive a signal can be called a reception beam (or Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception parameter, etc.

[0076] The invention technology of this application uniformly adopts beams for explanation, but it should be understood that the beams in this application can be replaced by other equivalent concepts and are not limited to the concepts mentioned above.

[0077] In an embodiment of the present application, the resource may be a resource of an uplink signal, which may be referred to as an uplink signal resource. The uplink signal includes, but is not limited to, a sounding reference signal (SRS) and a demodulation reference signal (DMRS). The downlink signal includes, but is not limited to, a channel state information reference signal (CSI-RS), a cell specific reference signal (CS-RS), a UE specific reference signal (US-RS), a demodulation reference signal (DMRS), and a synchronization system / physical broadcast channel block (SS / PBCH block). Among them, the SS / PBCH block may be referred to as a synchronization signal block (SSB).

[0078] In the communication protocol, reference signals are configured in the form of resources. Network devices will configure each reference signal to the terminal device in the form of resources. A resource is a configuration information unit, which usually includes parameters related to a reference signal, such as the time-frequency resource location of the reference signal, the number of ports, the time domain type (periodic / semi-static / aperiodic), etc.

[0079] In uplink and downlink transmission, both the network device and the terminal device need to use the correct beam to achieve the best transmission. In uplink transmission, the network device also needs to indicate to the terminal device what uplink transmission beam the terminal device needs to use, because the network device knows which beam of the terminal device is the best. The uplink beam can be indicated by TCI-state. Specifically, the beam used for uplink transmission is indicated by downlink TCI-state.

[0080] In the 3GPP protocol, the network device indicates the specific TCI-state to the terminal device through the TCI (Transmission Configuration Index) field in the downlink control information (DCI). The TCI field size is 3 bits and can specifically represent 8 different field values ​​(codepoints). Each field value of the TCI field can be associated with a TCI-state index, and the TCI-state index can uniquely identify a TCI-state. The TCI-state can be a downlink TCI-state or an uplink TCI-state. Each field value of the TCI field can also be associated with two TCI-state indexes, and the two TCI-state indexes can uniquely identify two TCI-states. The two TCI-states can be a downlink TCI-state and an uplink TCI-state, or two downlink TCI-states, or two uplink TCI-states.

[0081] Figure 1 Schematic diagram of a communication system applicable to the method of the embodiment of the present application. Figure 1 As shown, the communication system 100 may include at least one network device, such as Figure 1 The network device 110 shown; the communication system 100 may also include at least one terminal device, such as Figure 1 The terminal device 120 and the terminal device 130 are shown.

[0082] The network device 110 and the terminal device 120 and the terminal device 130 may communicate via a wireless link. The communication devices in the communication system, for example, the network device 110 and the terminal device 120 and the terminal device 130 may communicate via a multi-antenna technology.

[0083] In some possible scenarios, the network device 110 may only have an uplink receiving function but not a downlink sending function.

[0084] Figure 2 is a schematic diagram of another communication system applicable to the method of the embodiment of the present application. Figure 2 As shown, the terminal device includes a processor 211, a memory 212 and a transceiver 213, and the transceiver 213 includes a transmitter 2131, a receiver 2132 and an antenna 2133. The network device includes a processor 221, a memory 222 and a transceiver 223, and the transceiver 223 includes a transmitter 2231, a receiver 2232 and an antenna 2233.

[0085] The processor 211 , the memory 212 , and the transceiver 213 communicate with each other through an internal connection path, and the processor 221 , the memory 222 , and the transceiver 223 communicate with each other through an internal connection path.

[0086] The receiver 2132 may be used to receive transmission control information via the antenna 2133, and the transmitter 2131 may be used to send transmission feedback information to the network device via the antenna 2133. The transmitter 2231 may be used to send transmission control information to the terminal device via the antenna 2233, and the receiver 2232 may be used to receive transmission feedback information sent by the terminal device via the antenna 2233.

[0087] In some possible scenarios, Figure 2 The network device in the network may only have an uplink receiving function but not a downlink sending function.

[0088] It should be noted that Figure 1 and Figure 2 This is a simplified schematic diagram for ease of understanding. In actual applications, the communication system may include multiple network devices and multiple terminal devices. The embodiment of the present application does not limit the number of network devices and terminal devices included in the communication system.

[0089] The following is an example application scenario of the communication method of the present application. In the uplink transmission from the terminal to the base station, the terminal device needs to determine how much transmission power should be used based on the path loss (referred to as path loss) of the uplink signal propagation, so as to ensure that the signal strength when the signal reaches the network device meets the requirements, that is, reaches the target received power. The greater the path loss, the higher the uplink transmission power. Therefore, before performing uplink transmission, the terminal device needs to determine the value of the uplink path loss.

[0090] The specific method of determining the uplink path loss in the prior art is: the network device sends a path loss measurement signal to the terminal device, the terminal device measures the receiving power of the path loss measurement signal, and finally calculates the downlink path loss based on the sending power and receiving power of the path loss measurement signal, and regards the downlink path loss as the uplink path loss.

[0091] One method for calculating the path loss is to divide the transmission power (in milliwatts mw) of the path loss measurement signal by the reception power of the path loss measurement signal to obtain the path loss value, that is, how many times the signal has attenuated.

[0092] Another method of calculating the path loss is to use the transmission power (in dBm) of the path loss measurement signal minus the reception power of the path loss measurement signal to obtain the path loss value, that is, how many dB the attenuation is. For example, if the transmission power of the path loss measurement signal is 40dBm and the reception power of the path loss measurement signal is -40dBm, then the path loss value is 40-(-40)=80dB.

[0093] It should be noted that the relevant parameters of the path loss measurement signal are configured to the terminal device in the form of a path loss measurement resource. For example, a synchronization signal and PBCH block (SSB) or a channel state information-reference signal (CSI-RS) can be used as a path loss measurement signal.

[0094] For network devices that only have an uplink receiving function, when the terminal device performs uplink transmission to it, it is also necessary to determine the uplink transmission power according to the path loss value. However, since such network devices do not send downlink signals, it is impossible to measure the path loss value by measuring the path loss measurement signal sent by them. In view of this problem, the present application proposes a new communication method.

[0095] Figure 3 The following is a schematic flow chart of a communication method provided by an embodiment of the present application. Figure 3 As shown, the method may include S310 to S340.

[0096] S310, the network device sends configuration information to the terminal device. Correspondingly, the terminal device receives the configuration information from the network device.

[0097] As an example, the configuration information is used to configure resources, or in other words, the configuration information is used to configure uplink resources, or in other words, the configuration information is used to configure resources of uplink signals.

[0098] If the resources configured by the configuration information are used to transmit an uplink path loss measurement signal, or the resources configured in the configuration information are for transmitting an uplink path loss measurement signal, then it can be said that the configuration information is used to configure a path loss measurement resource or to configure an uplink path loss measurement resource, and the configured resource is an uplink path loss measurement resource. For the sake of simplicity of description, the uplink path loss measurement resource in the embodiment of the present application may be referred to as a path loss measurement resource, and the uplink path loss measurement signal may be referred to as a path loss measurement signal.

[0099] As an example, the configuration information may be carried in radio resource control (RRC) signaling, downlink control information (DCI), and media access control-control element (MAC-CE) signaling.

[0100] As an example, the configuration information may be understood to include configuration parameters related to the path loss measurement signal. For example, the configuration information includes one or more configuration parameters related to the path loss measurement resource.

[0101] As an example, the path loss measurement resource and the path loss measurement signal are in one-to-one correspondence, so in some descriptions, the two can be replaced with each other. For example, the path loss measurement resource in the description of the configuration of the path loss measurement resource can be replaced with the path loss measurement signal, and described as configuring the path loss measurement signal.

[0102] As an example, the path loss measurement resource may be understood as a resource used to transmit a path loss measurement signal. The path loss measurement signal corresponding to the path loss measurement resource may be understood as a path loss measurement signal transmitted using the path loss measurement resource.

[0103] As an example, the path loss measurement signal may be a sounding reference signal (SRS), a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), or a physical random access channel (PRACH). The DMRS may be a DMRS of a physical uplink control channel (PUCCH), or may be a DMRS of a physical uplink shared channel (PUSCH).

[0104] As an example, the path loss measurement resources include at least one of the following resources: SRS resources, DMRS resources, PTRS resources, PUCCH resources, PUSCH resources, PRACH resources, etc.

[0105] The following uses the SRS resource as an example to describe how to configure the path loss measurement resource using configuration information. These methods are also applicable to the other resources mentioned above. It is only necessary to replace the SRS resource with the other resources mentioned above. It can be understood that the path loss measurement resource in the following method for configuring the path loss measurement resource can be replaced with a path loss measurement signal, and the SRS resource can be replaced with an SRS.

[0106] In some possible implementations, an SRS resource specifically used for path loss measurement may be introduced, and a parameter may be used to indicate that the SRS resource is a resource specifically used for path loss measurement, or it may be said that the SRS resource is a path loss measurement resource. For the sake of convenience of description, the parameter may be referred to as the first parameter.

[0107] Among them, the first parameter can be a parameter specifically used to indicate whether the SRS resource is used for path loss measurement; the first parameter can also be a type parameter or a usage parameter of the SRS resource. When the type parameter or the usage parameter is configured as the first type or the first usage or the first value, it indicates that the SRS resource is an SRS resource suitable for uplink path loss measurement. It can be understood that the meaning represented by the first type or the first usage or the first value can be pre-agreed and known in advance by the terminal and the network device.

[0108] In some possible implementations, whether an SRS resource is a path loss measurement resource can be determined based on whether the SRS resource is configured with a corresponding path loss measurement resource. If an SRS resource is not configured with a corresponding path loss measurement resource, it means that the SRS resource itself is an SRS resource for path loss measurement. If an SRS resource is configured with a corresponding path loss measurement resource, it means that the SRS resource is not an SRS resource for path loss measurement.

[0109] As an example, for an uplink signal resource, its configuration information can also be used to configure the path loss measurement resource corresponding to the uplink signal resource, or in other words, its configuration information can include relevant parameters of the path loss measurement resource corresponding to the uplink signal resource. If the configuration information of the uplink signal resource does not configure the uplink path loss measurement resource corresponding to the uplink signal resource, then the uplink path loss resource is the uplink path loss measurement resource. If the configuration information of the uplink signal resource configures the uplink path loss measurement resource corresponding to the uplink signal resource, then the uplink path loss resource is not the uplink path loss measurement resource. It can be understood that the uplink signal resource in this paragraph can be replaced by the uplink signal.

[0110] In the embodiment of the present application, the uplink signal resource corresponds to the path loss measurement resource. It can be understood that the path loss value based on the transmission power of the uplink signal sent using the uplink signal resource is measured based on the receiving power and the transmitting power of the path loss measurement signal sent by the path loss measurement resource corresponding to the uplink signal resource.

[0111] As an example, the uplink signal resource includes at least one of the following resources: SRS resource, physical uplink control channel PUCCH resource, physical uplink shared channel PUSCH resource, demodulation reference signal DMRS resource, or physical random access channel PRACH resource.

[0112] As an example, the corresponding path loss measurement resources may be indicated for PUCCH resources, PUSCH resources or SRS resources through RRC configuration information or MAC-CE.

[0113] As an example, for PUCCH resources, a corresponding path loss measurement resource may be configured for each PUCCH resource, and a corresponding path loss measurement resource may also be configured for each PUCCH resource group.

[0114] As an example, for PUSCH resources, a corresponding path loss measurement resource may be configured for each PUSCH resource, and a corresponding path loss measurement resource may also be configured for each PUSCH resource group.

[0115] As an example, for SRS resources, a corresponding path loss measurement resource may be configured for each SRS resource, or a corresponding path loss measurement SRS resource may be configured for each SRS resource group (such as an SRS resource set). The corresponding path loss measurement SRS resource may also be indicated for PUCCH, PUSCH or SRS via MAC-CE.

[0116] In some possible implementations, the path loss measurement resource may be configured in TCI-state. TCI-state is a parameter used in uplink transmission and is used to determine which transmission beam is used in uplink transmission.

[0117] The path loss measurement resource is configured in the TCI-state, and the uplink signal using the TCI-state corresponds to the path loss measurement resource, that is, the transmission of the uplink signal can use the path loss value corresponding to the path loss measurement resource.

[0118] As an example, the TCI-state may include a path loss measurement resource, and all uplink signals (such as PUCCH, PUSCH or SRS) using the TCI-state correspond to the path loss measurement resource.

[0119] As another example, a TCI-state may include multiple path loss measurement resources, each of which corresponds to an uplink signal (such as PUCCH, PUSCH or SRS). For example, a TCI-state may include three path loss measurement resources, corresponding to the PUCCH, PUSCH and SRS using the TCI-state.

[0120] In this embodiment, it can be understood that when the network device does not have a downlink communication function, the network device can send the configuration information to the terminal through a network device with a downlink communication function. For example, the network device can send the configuration information to a network device with a downlink communication function, and the network device with a downlink communication function forwards or transparently transmits the configuration information to the terminal.

[0121] S320: The terminal device sends a path loss measurement signal, and the network device receives the path loss measurement signal accordingly.

[0122] It can be understood that the terminal device needs to determine the transmission power of the path loss measurement signal and transmit the path loss measurement signal based on the transmission power.

[0123] As an example, the transmission power determined by the terminal device for the path loss measurement signal may be a preset transmission power. For the convenience of description, the transmission power may be referred to as a first transmission power.

[0124] The preset transmit power may be a value specified by the protocol. For example, the transmit power is a transmit power determined according to the power class adopted by the terminal device. For another example, the transmit power is equal to the maximum transmit power allowed by the power class adopted by the terminal device. Alternatively, the preset transmit power may also be a value indicated by the network device for the terminal device, such as a value configured through RRC configuration information.

[0125] As another example, the transmission power determined by the terminal device for the path loss measurement signal may be calculated based on the path loss value corresponding to the path loss measurement signal. Each path loss measurement signal may correspond to a path loss value, and the path loss value corresponding to the path loss measurement signal may be the path loss measurement signal previously sent by the terminal to the network device and indicated to the terminal device. For example, the terminal device previously sent the path loss measurement signal to the network device, and the network device determined the path loss value corresponding to the path loss measurement signal and indicated it to the terminal device.

[0126] In this example, after the terminal device calculates and determines the transmission power of the path loss measurement signal, it can report the transmission power to the network device so that the network device knows the transmission power used by the path loss measurement signal and can further calculate the path loss value of the path loss measurement signal.

[0127] As an example, the terminal device may report the transmit power of the path loss measurement signal through UCI or MAC-CE signaling.

[0128] For a path loss measurement signal, the terminal device can determine which method to use to determine the transmission power of the path loss measurement signal according to the conditions. For example, when the first condition is met, the transmission power of the path loss measurement signal is determined by the path loss value corresponding to the path loss measurement signal; when the first condition is not met, the transmission power of the path loss measurement signal is a preset transmission power.

[0129] The first condition may be a combination of one or more of the following: the terminal device has determined the path loss value corresponding to the path loss measurement signal; the first path loss indication information has been received by the terminal device; the first path loss indication information has taken effect; the terminal device has received path loss indication information indicating the path loss value corresponding to the path loss measurement signal; the terminal device has received path loss indication information indicating the path loss value corresponding to the path loss measurement signal within a period of time; the timer corresponding to the path loss value of the path loss measurement signal has not timed out. The first path loss indication information refers to the first path loss indication information after the initial RRC configuration is completed.

[0130] The terminal device may maintain a timer, and each time the terminal receives the path loss value of the path loss measurement signal indicated by the network device, the timer is reset to zero, i.e., the timer is restarted. If the timer times out, for example, if the path loss value of the path loss measurement signal indicated by the network device is not received for a period of time, then the path loss value corresponding to the path loss measurement resource will become invalid and cannot be used for uplink transmission, i.e., cannot be used to calculate the transmission power of the uplink signal.

[0131] Optionally, one timer may be maintained for each path loss measurement signal, or a unified timer may be maintained for all path loss measurement signals.

[0132] S330, the network device calculates the path loss value of the path loss measurement signal.

[0133] As an example, the path loss measurement signal corresponds to the path loss measurement resource one-to-one, and therefore, the path loss value of the path loss measurement signal may be referred to as the path loss value corresponding to the path loss measurement resource.

[0134] As an example, after receiving the path loss measurement signal, the network device divides the transmission power of the path loss measurement signal by the reception power of the path loss measurement signal to obtain the path loss value of the path loss measurement signal, and the path loss value indicates how many times the reception power of the path loss measurement signal is attenuated compared to the transmission power. In this example, the transmission power and reception power of the path loss measurement signal can be in milliwatts (mw).

[0135] As another example, the network device may use the transmission power of the path loss measurement signal minus the reception power of the path loss measurement signal to obtain the path loss value of the path loss measurement signal, and the path loss value may indicate how many dB the reception power of the path loss measurement signal is attenuated compared to the transmission power. In this example, the transmission power and reception power of the path loss measurement signal may be in dBm.

[0136] For example, the transmission power of the path loss measurement signal is 40 dBm, and the reception power of the path loss measurement signal is -40 dBm, then the path loss value is 40-(-40)=80 dBm.

[0137] S340, the network device sends path loss indication information to the terminal device. Correspondingly, the terminal device receives the path loss indication information.

[0138] As an example, the path loss indication information indicates the path loss value of the path loss measurement signal sent by the terminal device in S330.

[0139] As an example, the path loss indication information may indicate the path loss value of one or more path loss measurement signals. For example, when the terminal sends multiple path loss measurement signals in S320, the path loss indication information may indicate the path loss value of each path loss measurement signal in all or part of the multiple path loss measurement signals.

[0140] In some possible implementations, the path loss indication information may be carried in RRC signaling, MAC-CE signaling, or downlink control information (DCI) signaling.

[0141] In some possible implementations, the path loss indication information includes information corresponding to one or more path loss measurement signals, such as an index of each path loss measurement signal in the one or more path loss measurement signals and a path loss value of each path loss measurement signal. The index of the path loss measurement signal may be an index of a path loss measurement resource corresponding to the path loss measurement signal.

[0142] In some possible implementations, the path loss value corresponding to each path loss measurement signal may be an absolute value or a relative value. The absolute value refers to the path loss value directly used by the terminal device. The relative value refers to the change in the path loss value.

[0143] For example, if the path loss value of a path loss measurement signal is 80dBm before, and the network device finds that the path loss value of the path loss measurement signal has changed to 85dBm, then the network device indicates the change of 5dBm to the terminal device, and the terminal device uses the change to update the path loss value of the path loss measurement signal to 85dBm. The 5dBm is a relative value.

[0144] In some possible implementations, the path loss values ​​of multiple path loss measurement signals may be quantized using a differential method. For example, one of the multiple path loss measurement signals is used as a reference path loss measurement signal, and for the reference path loss measurement signal, its path loss value is directly indicated to the network device as a reference path loss value, and for each of the other path loss measurement signals, the network device indicates the difference between the path loss value of each of the other path loss measurement signals and the path loss value of the reference path loss measurement signal.

[0145] As an example, the path loss values ​​corresponding to the two path loss measurement signals are x dBm and y dBm respectively. The path loss value x dBm of the reference path loss measurement signal is directly indicated. For the other path loss measurement signal, the network device indicates the difference between the path loss measurement signal and the path loss value of the reference path loss measurement signal, that is, (xy)dBm or (yx)dBm.

[0146] In some possible implementations, the reference path loss measurement signal may be the first or last of multiple path loss measurement signals, or may be the path loss measurement signal corresponding to the first or last path loss measurement resource among one or more path loss measurement resources, or may be the path loss measurement signal corresponding to the path loss measurement resource with the largest or smallest index.

[0147] By using the method of this embodiment, the terminal device can determine the path loss value of the uplink signal between the network device having only the uplink receiving function and the terminal device. The method of this embodiment is improved over the prior art in that: the terminal device sends a path loss measurement signal, the network device measures and indicates the path loss value of the path loss measurement signal, and the terminal device can determine the path loss value of the uplink signal between the network device having only the uplink receiving function and the terminal device.

[0148] As an example of an embodiment of the present application, the configuration information in S310 may include relevant parameters of one or more first resources, the first resource is an uplink path loss measurement resource, and each of the one or more first resources corresponds to a first signal. Among them, the first resource is a path loss measurement resource, so the first signal corresponding to the first resource can be called an uplink path loss measurement signal.

[0149] As an example, the first resource may be an SRS resource.

[0150] As an example, the related parameters of the first resource include a first parameter, and the first parameter is used to indicate that the first resource is an uplink path loss measurement resource.

[0151] As an example, the first parameter is a type parameter, and the type parameter is used to indicate the type of the first resource. When the type indicated by the first parameter is the first type, it indicates that the first resource is a path loss measurement resource.

[0152] In S320, the terminal device sends a first signal corresponding to each first resource in at least one first resource among the one or more first resources in the configuration information.

[0153] As an example, before the terminal sends the first signal corresponding to the one or more first resources, the terminal also determines the transmission power of the first signal.

[0154] As an example, the transmission power of the first signal is the first transmission power configured by the configuration information, or the transmission power determined according to the path loss corresponding to the first resource.

[0155] As an example, when the first condition is met, the transmission power of the first signal is the first transmission power; when the first condition is not met, the transmission power of the first signal is the transmission power determined by the path loss value corresponding to the first resource.

[0156] In S330, the network device calculates the path loss value of the first signal corresponding to each first resource in at least one first resource among the one or more first resources. For the sake of simplicity, the path loss value of the first signal corresponding to the first resource is referred to as the path loss value corresponding to the first resource.

[0157] It can be understood that the at least one first resource may be all or part of the one or more first resources.

[0158] In S340, the path loss indication information indicates a path loss value corresponding to each first resource in the at least one first resource. The path loss indication information may be referred to as first indication information.

[0159] As an example, the first indication information includes an index of each first resource in the at least one first resource and path loss information corresponding to each first resource.

[0160] As an example, for a first resource with the largest path loss value or the smallest path loss value among the at least one first resource, the first indication information includes the path loss value of the first resource; for any other first resource among the at least one first resource, the first indication information includes the difference between the path loss value of any other first resource and the path loss value of the first resource.

[0161] Figure 4 A schematic flow chart of a communication method provided by another embodiment of the present application. Figure 4 As shown, the communication method may include S410 to S440.

[0162] S410, the network device sends configuration information to the terminal device. Correspondingly, the terminal device receives the configuration information from the network device.

[0163] This step may refer to S310 and will not be described in detail here.

[0164] S420: The terminal device sends a path loss measurement signal, and the network device receives the path loss measurement signal accordingly.

[0165] This step can refer to S320 and will not be described here. The difference may include: when the terminal device determines the transmission power of the path loss measurement signal, the path loss value corresponding to the path loss measurement signal in the relevant content of "calculated by the path loss value corresponding to the path loss measurement signal" can be replaced with the receiving power corresponding to the path loss measurement signal.

[0166] S430, the network device sends receiving power indication information to the terminal device. Correspondingly, the terminal device receives the receiving power indication information. The receiving power indication information indicates the receiving power of the path loss measurement signal sent by the terminal device to the network device.

[0167] As an example, the received power indication information may indicate the received power of one or more path loss measurement signals. For example, when the terminal sends multiple path loss measurement signals in S420, the received power indication information may indicate the received power of each path loss measurement signal in all or part of the multiple path loss measurement signals.

[0168] In some possible implementations, the received power indication information may be carried in RRC signaling, MAC-CE signaling or DCI signaling.

[0169] In some possible implementations, the received power indication information includes information corresponding to one or more path loss measurement signals, such as an index of each path loss measurement signal in the one or more path loss measurement signals and the received power of each path loss measurement signal. The index of the path loss measurement signal may be an index of a path loss measurement resource corresponding to the path loss measurement signal.

[0170] In some possible implementations, the received power corresponding to each path loss measurement signal may be an absolute value or a relative value. An absolute value refers to a value directly used by a network device. A relative value refers to a change in the received power.

[0171] For example, if the received power of a path loss measurement signal was 80 dBm before, and the network device finds that the received power of the path loss measurement signal has changed to 85 dBm, the network device indicates the change of 5 dBm to the terminal device, and the terminal device uses the change to update the received power of the path loss measurement signal to 85 dBm. The 5 dBm is a relative value.

[0172] In some possible implementations, the received powers of multiple path loss measurement signals may be quantized in a differential manner. For example, one of the multiple path loss measurement signals is used as a reference path loss measurement signal, and for the reference path loss measurement signal, its received power is directly indicated to the network device as the reference received power, and for each other path loss measurement signal, the network device indicates the difference between the received power of each other path loss measurement signal and the received power of the reference path loss measurement signal.

[0173] As an example, the received powers corresponding to the two path loss measurement signals are x dBm and y dBm respectively. The received power x dBm of the reference path loss measurement signal is directly indicated. For the other path loss measurement signal, the network device indicates the difference between the received power of the path loss measurement signal and the received power of the reference path loss measurement signal, that is, (xy) dBm or (yx) dBm.

[0174] In some possible implementations, the reference path loss measurement signal may be the first or last of multiple path loss measurement signals, or may be the path loss measurement signal corresponding to the first or last path loss measurement resource among one or more path loss measurement resources, or may be the path loss measurement signal corresponding to the path loss measurement resource with the largest or smallest index.

[0175] S440, the terminal device calculates the path loss value of the path loss measurement signal.

[0176] For this step, reference may be made to the relevant contents of calculating the path loss measurement signal by the network device in S330, which will not be described in detail here.

[0177] Through the method of this embodiment, the terminal device can determine the path loss value between the network device having only the uplink receiving function and the terminal device. The improvement of this embodiment over the prior art is that the terminal device sends a path loss measurement signal, the network device measures and indicates the receiving power of the path loss measurement signal, and the terminal device can determine the path loss value between the network device having only the uplink receiving function and the terminal device based on the receiving power.

[0178] As an example of an embodiment of the present application, the configuration information in S410 includes relevant parameters of one or more first resources, the first resource is an uplink path loss measurement resource, and when each of the one or more first resources corresponds to a first signal, the received power indication information in S340 indicates the received power corresponding to each of the at least one first resource. The received power indication information may also be referred to as first indication information.

[0179] As an example, the first indication information includes an index of each first resource in the at least one first resource and receiving power information corresponding to each first resource.

[0180] As an example, for a first resource with the largest received power or the smallest received power among the at least one first resource, the first indication information includes the received power of the one first resource; for any other first resource among the at least one first resource, the first indication information includes the difference between the received power of any other first resource and the received power of the one first resource.

[0181] Figure 5 FIG. 1 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. Figure 5 As shown, the apparatus 500 may include a processing module 501 and a communication module 502 .

[0182] As a first example, the apparatus 500 may be used to implement Figure 3 to Figure 4 A communication method implemented by a terminal device in any of the embodiments shown in FIG. 5 . For example, the processing module 501 is used to implement Figure 3 to Figure 4 The communication module 502 is used to implement the processing steps performed by the terminal device in any of the embodiments shown in Figure 3 to Figure 4 The steps of sending and / or receiving etc. are performed by the terminal device in any of the embodiments shown in the specification.

[0183] As a second example, the apparatus 500 may be used to implement Figure 3 to Figure 4 A communication method implemented by a network device in any of the embodiments shown in FIG. 5 . For example, the processing module 501 is used to implement Figure 3 to Figure 4 The communication module 502 is used to implement the processing steps performed by the network device in any of the embodiments shown in Figure 3 to Figure 4 Any of the illustrated embodiments includes steps of sending and / or receiving performed by a network device.

[0184] Figure 6 This is a schematic diagram of the structure of a communication device provided by another embodiment of the present application. Figure 6 As shown, the device 600 includes a processor 601 and a communication circuit 602. The processor 601 and the communication circuit 602 are coupled to each other. It is understood that the communication circuit 602 can be a transceiver or an input-output interface. Optionally, the device 600 may also include a memory 603 for storing instructions executed by the processor 601 or storing input data required by the processor 601 to run the instructions or storing data generated after the processor 601 runs the instructions. It is understood that the memory 603 may be located outside the processor 601, or inside the processor 601.

[0185] As an example, the processor 601 is used to implement the functions of the processing module 501 , and the communication circuit 602 is used to implement the functions of the communication module 502 .

[0186] The device 600 may be a communication device or a chip used in a communication device. For example, the device 600 may be a UE or a chip used in a UE, or a network device or a chip used in a network device. It is understood that when the device 600 is a UE or a network device, the communication circuit 602 may be a transceiver.

[0187] In some embodiments of the present application, a computer program product is also provided. When the computer program product is executed on a processor, it can implement the method implemented by the terminal device in any of the above embodiments, or it can implement the method implemented by the network device in any of the above method embodiments.

[0188] In some embodiments of the present application, a computer-readable storage medium is also provided, which includes computer instructions. When the computer instructions are executed on a processor, the method implemented by the terminal device in any of the above embodiments can be implemented, or the method implemented by the network device in any of the above method embodiments can be implemented.

[0189] In some embodiments of the present application, a communication system is also provided, which can implement the method implemented by the terminal device and the network device in any of the above embodiments.

[0190] It is understood that the processor in the embodiments of the present application can be the following devices or all or part of the circuits in the following devices for processing functions: central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0191] The method steps in the embodiments of the present application can be implemented by hardware, or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device or a terminal device. Of course, the processor and the storage medium can also be present in a network device or a terminal device as discrete components.

[0192] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by 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 programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk.

[0193] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0194] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: Applied to a terminal device, the method comprises: Receive configuration information, where the configuration information includes relevant parameters of one or more first resources, where the first resource is an uplink path loss measurement resource, and each of the one or more first resources corresponds to a first signal; Sending a first signal corresponding to the one or more first resources; First indication information is received, where the first indication information is used to indicate a path loss value or a receiving power corresponding to at least one first resource.

2. The method according to claim 1, characterized in that The first resource is a sounding reference signal SRS resource.

3. The method according to claim 1 or 2, characterized in that: The related parameters of the first resource include a first parameter, and the first parameter is used to indicate that the first resource is an uplink path loss measurement resource.

4. The method according to claim 3, characterized in that The first parameter is a type parameter, and the type parameter is used to indicate the type of the first resource. When the type indicated by the first parameter is the first type, it means that the first resource is an uplink path loss measurement resource.

5. The method according to claim 1, characterized in that The configuration information is used to configure uplink path loss measurement resources associated with uplink signal resources, and the uplink signal resources include at least one of the following resources: SRS resources, physical uplink control channel PUCCH resources, physical uplink shared channel PUSCH resources, demodulation reference signal DMRS resources, or physical random access channel PRACH resources.

6. The method according to claim 5, characterized in that The uplink signal resource includes an SRS resource. If the configuration information does not configure an uplink path loss measurement resource associated with the SRS resource, the SRS resource is an uplink path loss measurement resource.

7. The method according to claim 1, characterized in that Before sending the first signal corresponding to the one or more first resources, the method further includes: Determine the transmit power of the first signal.

8. The method according to claim 7, characterized in that The transmission power of the first signal is the first transmission power configured by the configuration information, or the transmission power determined according to the path loss corresponding to the first resource.

9. The method according to claim 8, characterized in that When the first condition is met, the transmit power of the first signal is the first transmit power; when the first condition is not met, the transmit power of the first signal is the transmit power determined by the path loss value corresponding to the first resource; The first condition includes one or more of the following conditions: The initial first indication information has been received by the terminal device; The initial first instruction information has taken effect; The terminal device knows the path loss value corresponding to the first resource; The terminal device has received indication information including a path loss value corresponding to the first resource within a period of time in the past; The timer corresponding to the first resource has not timed out, and the timer is a timer used to maintain the path loss value corresponding to the first resource.

10. The method according to claim 1, characterized in that The first indication information includes an index of each first resource in the at least one first resource and path loss information corresponding to each first resource.

11. The method according to claim 10, characterized in that For a first resource having a maximum path loss value or a minimum path loss value among the at least one first resource, the first indication information includes the path loss value of the first resource; For any other first resource among the at least one first resource, the first indication information includes a difference between a path loss value of the any other first resource and a path loss value of the one first resource.

12. The method according to claim 1, characterized in that The first indication information includes an index of each first resource in the at least one first resource, and a receiving power corresponding to each first resource; A path loss value corresponding to the at least one first resource is calculated according to the received power of the at least one first resource.

13. The method according to claim 12, characterized in that For a first resource having the largest received power or the smallest received power among the at least one first resource, the first indication information includes the received power of the first resource; For any other first resource among the at least one first resource, the first indication information includes a difference between a received power of the any other first resource and a received power of the one first resource.

14. A communication method, characterized in that: Applied to a network device, the method comprises: Sending configuration information, where the configuration information includes parameters related to one or more first resources, where the first resource is an uplink path loss measurement resource, and each of the one or more first resources corresponds to a first signal; receiving a first signal corresponding to the one or more first resources; Send first indication information, where the first indication information is used to indicate a path loss value or a receiving power corresponding to at least one first resource.

15. The method according to claim 14, characterized in that The first resource is a sounding reference signal SRS resource.

16. The method according to claim 14 or 15, characterized in that The related parameters of the first resource include a first parameter, and the first parameter is used to indicate that the first resource is an uplink path loss measurement resource.

17. The method according to claim 16, characterized in that The first parameter is a type parameter, and the type parameter is used to indicate the type of the first resource. When the type indicated by the first parameter is the first type, it means that the first resource is an uplink path loss measurement resource.

18. The method according to claim 14, characterized in that The configuration information is used to configure uplink path loss measurement resources associated with uplink signal resources, and the uplink signal resources include at least one of the following resources: SRS resources, physical uplink control channel PUCCH resources, physical uplink shared channel PUSCH resources, demodulation reference signal DMRS resources, or physical random access channel PRACH resources.

19. The method according to claim 18, characterized in that The uplink signal resource includes an SRS resource. If the configuration information does not configure an uplink path loss measurement resource associated with the SRS resource, the SRS resource is an uplink path loss measurement resource.

20. The method according to claim 14, characterized in that Before sending the first indication information, the method further includes: Determine the transmit power of the first signal.

21. The method according to claim 20, characterized in that The transmission power of the first signal is the first transmission power configured by the configuration information, or the transmission power determined according to the path loss corresponding to the first resource.

22. The method according to claim 21, characterized in that When the first condition is met, the transmit power of the first signal is the first transmit power; when the first condition is not met, the transmit power of the first signal is the transmit power determined by the path loss value corresponding to the first resource; The first condition includes one or more of the following conditions: The initial first indication information has been received by the terminal device; The initial first instruction information has taken effect; The terminal device knows the path loss value corresponding to the first resource; The terminal device has received indication information including a path loss value corresponding to the first resource within a period of time in the past; The timer corresponding to the first resource has not timed out, and the timer is a timer used to maintain the path loss value corresponding to the first resource.

23. The method according to claim 14, characterized in that The first indication information includes an index of each first resource in the at least one first resource and path loss information corresponding to each first resource.

24. The method according to claim 23, characterized in that For a first resource having a maximum path loss value or a minimum path loss value among the at least one first resource, the first indication information includes the path loss value of the first resource; For any other first resource among the at least one first resource, the first indication information includes a difference between a path loss value of the any other first resource and a path loss value of the one first resource.

25. The method according to claim 14, characterized in that The first indication information includes an index of each first resource in the at least one first resource, and a receiving power corresponding to each first resource.

26. The method according to claim 25, characterized in that For a first resource having the largest received power or the smallest received power among the at least one first resource, the first indication information includes the received power of the first resource; For any other first resource among the at least one first resource, the first indication information includes a difference between a received power of the any other first resource and a received power of the one first resource.

27. A communication device, characterized in that: The method comprises a functional module for implementing the method according to any one of claims 1 to 26.

28. A communication device, characterized in that: include: Memory and processor; The memory is used to store program instructions; The processor is configured to execute program instructions in the memory to implement the method according to any one of claims 1 to 26.

29. A communication system, characterized in that: The communication system comprises a terminal device and a network device, the terminal device is used to implement the method according to any one of claims 1 to 13, and the terminal device is used to implement the method according to any one of claims 14 to 26.

30. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program code for computer execution, wherein the program code includes instructions for implementing the method according to any one of claims 1 to 26.

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