Communication method, terminal equipment and network equipment

Abstract

The invention relates to a communication method, terminal equipment and network equipment, and the communication method comprises the steps that the terminal equipment determines path loss between the terminal equipment and first network equipment according to a path loss deviation value; and the terminal equipment sends uplink information to the first network equipment based on the path loss. The power consumption waste of the terminal equipment can be reduced or avoided.

Description

Communication method, terminal device and network device Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a communication method, a terminal device, and a network device. Background Art

[0002] Distributed communication systems are beneficial to terminal energy conservation and improving uplink throughput. In a distributed communication system, multiple transmission reception points (TRPs) are deployed. For uplink transmission, the terminal device sends uplink information to the TRP, and the TRP then transmits the uplink information to the macro base station through an ideal backhaul communication link with the macro base station. For downlink transmission, the macro base station sends downlink information to the terminal device. Since the TRP does not send a downlink reference signal to the terminal device, how the terminal device in the distributed communication system determines the path loss when sending uplink information to the TRP is an unresolved problem.

[0003] Summary of the Invention

[0004] An embodiment of the present application provides a communication method that can be used by a terminal device in a distributed communication system to determine path loss and send uplink information based on the path loss, thereby reducing or avoiding power consumption waste of the terminal device.

[0005] An embodiment of the present application provides a communication method, including:

[0006] The terminal device determines the path loss between the terminal device and the first network device according to the path loss offset value;

[0007] The terminal device sends uplink information to the first network device based on the path loss.

[0008] An embodiment of the present application provides a communication method, including:

[0009] The second network device sends indication information to the terminal device, where the indication information is used to indicate a path loss offset value, where the path loss offset value is used to determine the path loss between the terminal device and the first network device, where the path loss is used by the terminal device to send uplink information to the first network device.

[0010] An embodiment of the present application provides a communication method, including:

[0011] The first network device receives a first SRS;

[0012] The first network device sends the received power of the first SRS to the second network device; or, the first network device sends the difference between the transmitted power of the first SRS and the received power of the first SRS to the second network device.

[0013] An embodiment of the present application provides a communication method, including:

[0014] The terminal device receives the DCI sent by the second network device, where the number of bits of the TPC field in the DCI is greater than or equal to 3;

[0015] The terminal device adjusts the transmission power of the uplink information according to the DCI.

[0016] An embodiment of the present application provides a communication method, including:

[0017] The second network device sends DCI to the terminal device, where the number of bits of the TPC field in the DCI is greater than or equal to 3; the DCI is used by the terminal device to determine the transmission power of uplink information.

[0018] An embodiment of the present application provides a terminal device, including:

[0019] A first processing module determines a path loss between the terminal device and the first network device according to the path loss offset value;

[0020] The first transceiver module is configured to send uplink information to the first network device based on the path loss.

[0021] An embodiment of the present application provides a second network device, including:

[0022] The second transceiver module is used to send indication information to the terminal device, where the indication information is used to indicate a path loss offset value, where the path loss offset value is used to determine the path loss between the terminal device and the first network device, where the path loss is used by the terminal device to send uplink information to the first network device.

[0023] An embodiment of the present application provides a first network device, comprising: a third transceiver module, configured to:

[0024] receiving a first SRS;

[0025] The received power of the first SRS is sent to the second network device; or the difference between the transmitted power of the first SRS and the received power of the first SRS is sent to the second network device.

[0026] An embodiment of the present application provides a terminal device, including:

[0027] a fourth transceiver module, configured to receive a DCI sent by the second network device, where the number of bits of a transmission power control TPC field in the DCI is greater than or equal to 3;

[0028] The third processing module is configured to adjust the transmission power of uplink information according to the DCI.

[0029] An embodiment of the present application provides a second network device, including:

[0030] The fifth transceiver module is used to send DCI to the terminal device, where the number of bits of the TPC field in the DCI is greater than or equal to 3; the DCI is used by the terminal device to determine the transmission power of uplink information.

[0031] The present application also provides a communication device including a processor, a memory, and a transceiver. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory and control the transceiver so that the device executes the above-mentioned communication method.

[0032] An embodiment of the present application provides a chip for implementing the above-mentioned communication method.

[0033] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned communication method.

[0034] An embodiment of the present application provides a computer-readable storage medium for storing a computer program, which, when executed by a device, enables the device to execute the above-mentioned communication method.

[0035] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned communication method.

[0036] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned communication method.

[0037] In an embodiment of the present application, the terminal device determines the path loss between the terminal device and the first network device based on the path loss offset value, and sends uplink information to the first network device based on the path loss. The embodiment of the present application is applicable to a distributed communication system, and can avoid the situation in which the path loss determined by the terminal device in the distributed communication system is not applicable to the receiving end of the uplink information, thereby reducing or avoiding waste of power consumption of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is a schematic diagram of an application scenario according to an embodiment of the present application.

[0039] FIG2 is a schematic diagram of the structure of a distributed communication system.

[0040] FIG3 is a schematic flowchart of a communication method 300 according to an embodiment of the present application.

[0041] FIG4A is a schematic diagram showing an association between a path loss offset value set and one or more uplink TRPs in an embodiment of the present application.

[0042] Figure 4B is a schematic diagram of the one-to-one correspondence between multiple path loss offset value sets and multiple uplink TRPs in an embodiment of the present application.

[0043] FIG5A is a flowchart 1 of the implementation of Example 4 of the present application.

[0044] FIG5B is a second implementation flowchart of Example 4 of the present application.

[0045] FIG6 is a schematic diagram of an interaction method between a terminal device and a network device according to an embodiment of the present application.

[0046] FIG7 is a schematic flowchart of a communication method 700 according to an embodiment of the present application.

[0047] FIG8 is a schematic flowchart of a communication method 800 according to an embodiment of the present application.

[0048] FIG9 is a flowchart of an implementation of a communication method 900 according to an embodiment of the present application.

[0049] FIG10 is a schematic block diagram of a terminal device 1000 according to an embodiment of the present application.

[0050] FIG11 is a schematic block diagram of a second network device 1100 according to an embodiment of the present application.

[0051] FIG12 is a schematic block diagram of a second network device 1200 according to an embodiment of the present application.

[0052] FIG13 is a schematic block diagram of a first network device 1300 according to an embodiment of the present application.

[0053] FIG14 is a schematic block diagram of a terminal device 1400 according to an embodiment of the present application.

[0054] FIG15 is a schematic block diagram of a second network device 1500 according to an embodiment of the present application.

[0055] FIG16 is a schematic structural diagram of a communication device 1600 according to an embodiment of the present application.

[0056] FIG17 is a schematic structural diagram of a chip 1700 according to an embodiment of the present application. DETAILED DESCRIPTION

[0057] 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.

[0058] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), Fifth Generation (5G) system or other communication systems.

[0059] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0060] In one embodiment, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0061] In one embodiment, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0062] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0063] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0064] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0065] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0066] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called 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 achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those 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 smart bracelets and smart jewelry for vital sign monitoring.

[0067] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in a WLAN, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0068] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0069] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0070] FIG1 exemplarily illustrates a communication system 100. The communication system includes a network device 110 and two terminal devices 120. In one embodiment, the communication system 100 may include multiple network devices 110, and each network device 110 may include a different number of terminal devices 120 within its coverage area, which is not limited in this embodiment of the present application.

[0071] In one embodiment, the communication system 100 may further include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF), which is not limited in this embodiment of the present application.

[0072] Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment can be an evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), pico base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc. in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0073] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system shown in Figure 1 as an example, the communication device may include a network device and a terminal device having a communication function. The network device and the terminal device may be specific devices in the embodiments of the present application and will not be described in detail here. The communication device may also include other devices in the communication system, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0074] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0075] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0076] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0077] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0078] In a communication network, although base stations have sufficient transmit power to send signals to terminal devices, the transmit power and battery storage capacity of terminal devices may be relatively limited. Furthermore, further improving uplink throughput remains an unresolved issue. To address these issues, a distributed communication system has been proposed. Distributed communication systems can also be referred to as distributed systems, distributedly deployed communication systems, or distributed deployment systems. Distributed communication systems employ multiple Transmitter Relay Protocols (TRPs), each of which provides services to terminal devices. This improves cell edge coverage and provides more balanced service quality. The large number of TRPs communicating with terminal devices ensures the robustness of the communication link. Figure 2 is a schematic diagram of the distributed communication system. As shown in Figure 2, multiple TRPs are configured in the distributed communication system. During uplink transmission, the terminal device sends uplink information to the TRP, which then transmits this uplink information to the macro base station via an ideal backhaul communication link with the macro base station. During downlink transmission, the macro base station can directly send downlink information to the terminal device.

[0079] In current technology, the terminal device determines the path loss value by measuring the downlink reference signal, and applies the path loss to the calculation of the transmission power of the uplink transmission. In a distributed communication system, the terminal device may not receive the downlink reference signal from the TRP. For example, the terminal device only receives the downlink reference signal configured from the macro base station, determines the path loss based on the downlink reference signal, and determines the transmission power when sending uplink information to the TRP based on the path loss. That is to say, in the related art, the terminal device determines the path loss between the terminal device and the macro base station, and then determines the transmission power when the terminal device sends uplink information to the TRP based on the path loss. However, in a distributed communication system, the difference between the path loss between the terminal device and the macro base station and the path loss between the terminal device and the TRP can be very large, and the former is often greater than the latter; therefore, the path loss calculated by the downlink reference signal sent by the macro base station is not applicable to the current environment, resulting in waste of power consumption of the terminal device. For uplink information such as the Physical Uplink Shared Channel (PUSCH) information, the Physical Uplink Control Channel (PUCCH) information, the Sounding Reference Signal (SRS), and the Physical Random Access Channel (PRACH), there is the problem that the path loss determined by the terminal device is not suitable for sending uplink information.

[0080] FIG3 is a schematic flow chart of a communication method 300 according to an embodiment of the present application. The method may optionally be applied to the system shown in FIG1 or FIG2 , but is not limited thereto. The method includes at least part of the following contents.

[0081] S310. The terminal device determines a path loss between the terminal device and the first network device according to the path loss offset value.

[0082] S320. The terminal device sends uplink information to the first network device based on the path loss.

[0083] The first network device may include a TRP in a distributed communication system. In the distributed communication network, the terminal device may use the above method to determine the path loss between the terminal device and each TRP, and send uplink information to the uplink TRP based on the path loss.

[0084] In some embodiments, the terminal device receives indication information sent by a second network device, where the indication information is used to indicate a path loss offset value. The second network device may be a device different from the first network device, for example, the second network device may include a macro base station / base station, or other TRP different from the first network device.

[0085] The uplink information may include at least one of PUSCH information, PUCCH information, SRS information and PRACH information.

[0086] Since the terminal device determines the path loss between itself and the first network device based on the path loss offset value instead of the path loss between itself and other network devices, the terminal device determines the transmission power based on the path loss and uses the transmission power to send uplink information to the first network device. This can avoid the problem that the path loss determined by the terminal device is not suitable for sending uplink information, thereby reducing or avoiding wasteful power consumption of the terminal device.

[0087] In other implementations, the second network device may determine the path loss between the terminal device and the first network device and send the path loss to the terminal device; the terminal device sends uplink information to the first network device based on the path loss.

[0088] In some embodiments, the terminal device may determine the path loss between the terminal device and the first network device based on the path loss information configured or indicated by the second network device and the path loss between the terminal device and the second network device. For example, the second network device may configure or indicate path loss information for each first network device, and the terminal device may determine the path loss between the terminal device and each first network device based on the configuration or indication of the first network device.

[0089] In some embodiments, the path loss information includes a path loss offset value. The path loss information may also include a path loss reference signal index and / or a reference signal power; wherein,

[0090] The path loss reference signal indicated by the path loss reference signal index is sent by the second network device to the terminal device. The path loss reference signal may be a channel state information reference signal (CSI-RS), a synchronization signal block (SSB), or a positioning reference signal (PRS).

[0091] The path loss reference signal index can be configured by the network device through radio resource control (RRC) signaling, or updated through a media access control (MAC) control element (CE), or determined by a preset rule, or dynamically mapped through the SRS resource indicator (SRI) field in the downlink control information (DCI). It is worth noting that the network device and one or more uplink TRPs are different devices;

[0092] The reference signal power can be determined based on the reference signal power configured by the network device. The reference signal power is the transmit power of the path loss reference signal, such as the transmit power of the CSI-RS, the transmit power of the SSB, or the transmit power of the PRS. It is worth noting that the network device and one or more uplink TRPs are different devices.

[0093] The terminal device can determine the path loss with one or more first network devices based on the path loss information.

[0094] The path loss offset value is configured by the second network device. One possible implementation scheme is that the second network device receives an SRS from the terminal device, and determines the path loss between the terminal device and the second network device based on the transmission power and RSRP of the SRS; and the second network device receives the path loss between the terminal device and the first network device from the first network device (or the power used to determine the path loss); the second network device determines the path loss offset value based on the path loss between the terminal device and the second network device, and the path loss between the terminal device and the first network device. The second network device can also configure the path loss offset value in other ways, and the embodiment of the present application does not limit the specific method. In addition, in the embodiment of the present application, the second network device can configure different path loss offset values ​​for each terminal device, and can also configure the same path loss offset value for multiple terminal devices that are located close to each other, so as to reduce the workload of configuring and calculating the path loss offset value.

[0095] The path loss offset value may be the difference between the path loss between the terminal device and the second network device and the path loss between the terminal device and the first network device. The path loss offset value may be a positive integer, a negative integer, or 0. When the path loss offset value is set to default, it indicates that the path loss offset value is a default value, for example, the default value may be 0.

[0096] For example, the path loss offset value = the path loss between the terminal device and the second network device – the path loss between the terminal device and the first network device;

[0097] Accordingly, when the terminal device sends uplink information to the first network device, the path loss between the terminal device and the first network device can be determined based on the reference signal power when the second network device sends the path loss reference signal, the receiving power of the terminal receiving the path loss reference signal, and the path loss offset value, thereby determining the sending power used by the terminal device when sending uplink information to the first network device.

[0098] For example, the path loss between the terminal device and the first network device = the path loss between the terminal device and the second network device – the path loss offset. For example, the path loss between the terminal device and the second network device can be determined by the power of a reference signal sent by the second network device to the terminal device and the RSRP of the high-layer filtered reference signal.

[0099] Alternatively, the path loss offset value=the path loss between the terminal device and the first network device–the path loss between the terminal device and the second network device;

[0100] Accordingly, when the terminal device sends uplink information to the first network device, the path loss between the terminal device and the first network device can be determined based on the reference signal power when the second network device sends the path loss reference signal, the receiving power of the terminal receiving the path loss reference signal, and the path loss offset value, thereby determining the sending power used by the terminal device when sending uplink information to the first network device.

[0101] For example, the path loss between the terminal device and the first network device = the path loss between the terminal device and the second network device + the path loss offset. For example, the path loss between the terminal device and the second network device can be determined by the power of the reference signal sent by the second network device to the terminal device and the RSRP of the high-layer filtered reference signal.

[0102] In the above two examples, the RSRP of the higher layer filtering is equivalent to the received power of the path loss reference signal received by the terminal device. The RSRP of the higher layer filtering can be expressed as the Reference Signal Receiving Power (RSRP) of the higher layer filtering when the terminal device receives the path loss reference signal. The RSRP of the higher layer filtering can be called higher layer filtered RSRP. The RSRP of the higher layer filtering is obtained by the terminal device by measuring the path loss reference signal.

[0103] It can be seen from the RSRP and reference signal power of high-level filtering that these two items are determined based on the path loss reference signal sent by the second network device. The path loss calculated by these two items is the path loss between the terminal device and the second network device, which is different from the path loss between the terminal device and one or more TRPs; therefore, the network device configures a path loss offset value for the terminal device to adjust the path loss difference so that the terminal device can determine the path loss between it and one or uplink TRPs.

[0104] In some implementations, the uplink information sent by the terminal device may include at least one of PUSCH information, PUCCH information, SRS information, and PRACH information.

[0105] The path loss information may include PUSCH path loss information, and the terminal device sends PUSCH information to one or more first network devices (such as uplink TRP) according to the path loss information;

[0106] The path loss information may include PUCCH path loss information, and the terminal device sends PUCCH information to one or more first network devices (such as uplink TRP) according to the path loss information;

[0107] The path loss information may include path loss information of the SRS, and the terminal device sends the SRS information to one or more first network devices (such as an uplink TRP) according to the path loss information;

[0108] The path loss information may include the path loss information of PRACH, and the terminal device sends the PRACH information to one or more first network devices (such as uplink TRP) based on the path loss information.

[0109] In some embodiments, the path loss offset value is associated with one or more of the following transmission parameters:

[0110] Type of uplink information;

[0111] Path loss reference signal index;

[0112] SRS Resource Indicator (SRI) index;

[0113] Spatial information.

[0114] The type of uplink information may indicate that the uplink information is at least one of PUSCH information, PUCCH information, SRS information or PRACH information.

[0115] The path loss reference signal index may include one or more of the following: CSI-RS index, CSI-RS resource index, SSB index, SSB resource index, PRS index, PRS resource index.

[0116] The spatial information may include at least one of the following:

[0117] SRS resource collection information;

[0118] Transmission configuration indicator (TCI) status information;

[0119] Antenna panel information;

[0120] Control Resource Set (CORESET) group information (CORESET Pool Index);

[0121] Beam information;

[0122] Reference signal resource information.

[0123] As can be seen from the above content, the second network device configures multiple path loss offset values ​​for the terminal device, and configures the transmission parameters or transmission parameter combinations associated with each path loss offset value. In some embodiments, the first network device is associated with one or more of the above transmission parameters, or the uplink information sent by the terminal device to the first network device is associated with one or more of the above transmission parameters. When sending uplink information, the terminal device can determine the path loss offset value associated with the first network device or the uplink information based on one or more of the transmission parameters associated with the first network device or the uplink information, and the configuration of the second network device; and determine the path loss between the terminal device and the first network device based on the path loss offset value associated with the first network device or the uplink information.

[0124] For example, taking the association of the path loss offset value with the type of uplink information as an example, the second network device pre-configures a path loss offset value 1 and a path loss offset value 2 for the terminal device, wherein the path loss offset value 1 is associated with the PUSCH information, and the path loss offset value 2 is associated with the PUCCH information. When the terminal device sends uplink information, if PUSCH information is to be sent, the path loss offset value associated with the uplink information can be determined to be the path loss offset value 1 based on the association between the path loss offset value 1 and the PUSCH information; if PUCCH information is to be sent, the path loss offset value associated with the uplink information can be determined to be the path loss offset value 2 based on the association between the path loss offset value 2 and the PUCCH information.

[0125] For another example, taking the association of path loss offset values ​​with TCI states as an example, the second network device pre-configures path loss offset values ​​5, 6, and 7 for the terminal device, where path loss offset value 5 is associated with TCI state 1, path loss offset value 6 is associated with TCI state 2, and path loss offset value 7 is associated with TCI state 3. When the terminal device sends uplink information to the first network device, if the first network device is associated with TCI state 1, the terminal device can determine that the path loss offset value associated with the first network device is path loss offset value 5 based on the association between path loss offset value 5 and TCI state 1.

[0126] In the above example, the path loss offset value is associated with a transmission parameter. In the case where the path loss offset value is associated with multiple transmission parameters, the terminal device can also use the same method to determine the path loss offset value associated with the first network device, or determine the path loss offset value associated with the uplink information, which will not be repeated here.

[0127] In the embodiments of the present application, spatial information may refer to a spatial setting, spatial relation, spatial parameters, etc. for uplink information transmission. Spatial information may represent the spatial relationship between uplink and downlink channels transmitted by a terminal device. For example, the spatial relationship may include a panel, beam, or TRP for uplink and downlink channels transmitted by the terminal device.

[0128] SRS resource set information includes the SRS resource set index, SRS resource set ID, etc. The SRS resource set can be associated with the panel / beam / TCI state. In actual applications, the terminal device can use the same panel / beam / TCI state as the one used to transmit the SRS resource set to transmit the uplink channel.

[0129] TCI state information can be used for uplink and downlink beam management. Among them, a TCI state may include Quasi Co-Location (QCL) type configuration and QCL reference signal configuration. The QCL type configuration may be one of QCL type A (typeA), QCL typeB, QCL typeC or QCL typeD, and the QCL reference signal configuration may be a cell identifier (ID), a bandwidth part (Bandwidth Part, BWP) ID and a reference signal identifier (such as a CSI-RS resource ID or an SSB index). Among them, the definitions of different QCL types are as follows: QCL TypeA is used to configure Doppler shift, Doppler spread, average delay, and delay spread; QCL typeB is used to configure Doppler shift and Doppler spread; QCL typeC is used to configure Doppler shift and average delay; QCL typeD is used to configure Spatial Rx parameters.

[0130] If the network device configures the QCL reference signal of the target uplink channel as an SSB 1 resource through the TCI state, and the QCL type is configured as typeA, typeB or typeC, the terminal device can assume that the large-scale parameters of the above-mentioned target uplink signal and the SSB 1 resource are the same or similar, and the large-scale parameters are determined by the QCL type configuration.

[0131] If the transmission TRP, transmission panel, or transmit beam of two uplink channels is different, different TCI states are usually configured.

[0132] In the embodiment of the present application, the panel information may include a panel ID, or an index value of a panel, etc., which is not limited in the embodiment of the present application.

[0133] In this embodiment of the present application, the CORESET Pool Index can be associated with a TRP. The network device can configure a CORESET Pool Index for each CORESET to indicate whether it is the same TRP. The value range of the CORESET Pool Index is 0 and 1. For CORESETs configured with the same CORESET Pool Index, the terminal device can be considered to be associated with the same TRP.

[0134] In addition, the beam information may include a beam ID, or a beam index value, etc., which is not limited in this embodiment of the present application.

[0135] The TRP information may include a TRP ID, or an index value of a TPR, etc., which is not limited in this embodiment of the present application.

[0136] Reference signal resource information includes CSI-RS resource index, SSB resource index, PRS resource index, SRS resource index, etc.

[0137] In an embodiment of the present application, the terminal device can be configured with multiple different spatial parameters, that is, the terminal device can transmit uplink channels through multiple different spatial relationships.

[0138] The following are several specific embodiments to introduce several ways in which the second network device configures a path loss offset value for the terminal device.

[0139] Example 1:

[0140] In this embodiment, the path loss offset value is configured via RRC signaling, i.e., the indication information sent by the second network device to the terminal device includes RRC signaling. For example, the second network device configures the path loss offset value for the terminal device via RRC signaling. The RRC signaling may be first RRC signaling.

[0141] In some embodiments, the path loss offset value is associated with one or more of the following: uplink information type, path loss reference signal index, SRS resource indication (SRI) index, SRS resource set (SRS Resource Set) information, TCI status information, antenna panel information, CORESET group information, beam information, and reference signal resource information. The path loss reference signal index may include: CSI-RS index, CSI-RS resource index, SSB index, SSB resource index, PRS index, or PRS resource index.

[0142] In some embodiments, the path loss reference signal index is configured through independent RRC signaling. For example, the second network device can configure the path loss offset value, the path loss reference signal index and the reference signal power for the terminal device through different RRC signaling respectively. Alternatively, the second network device can also configure the path loss offset value, the path loss reference signal index and the reference signal power for the terminal device through the same RRC signaling. Alternatively, the second network device can also configure the path loss offset value, the path loss reference signal index and the reference signal power for the terminal device through two RRC signalings, and each RRC signaling configures one or two of the path loss offset value, the path loss reference signal index and the reference signal power. The embodiments of the present application do not limit the specific configuration method.

[0143] The following is an example of an RRC structure that configures the path loss offset value to be associated with the path loss reference signal index:

[0144] In the above RRC structure, pathloss-delta-Id represents the identifier of the path loss offset value, and PUSCH-pathloss-delta-Id represents the identifier of the path loss reference signal.

[0145] Since the measurement values ​​of the terminal device according to different path loss reference signals are different, the path loss offset value can be configured more accurately by associating with the path loss reference signal.

[0146] The following is an example of an RRC structure that configures the path loss offset value associated with the TCI state. The path loss offset values ​​corresponding to different uplink channels can be the same or configured separately. This example uses the path loss offset values ​​of different uplink channels (such as PUSCH, PUCCH, SRS, and PRACH) as an example:

[0147] In the above RRC structure, TCI-StateId represents the TCI state identifier, PUSCH-pathloss-delta-Id, PUCCH-pathloss-delta-Id, SRS-pathloss-delta-Id, and PRACH-pathloss-delta-Id respectively represent the identifiers of the path loss offset values ​​corresponding to different uplink channels (PUSCH, PUCCH, SRS, and PRACH).

[0148] Since different TCI states can represent different beam directions, the path loss offset values ​​for different beam directions are different. Therefore, configuring the path loss offset value in association with the TCI state can more accurately configure the path loss offset value and better integrate with the existing TCI architecture.

[0149] The following is an example of an RRC structure that configures the path loss offset value to be associated with the CSI-RS index (or CSI-RS resource index). The path loss offset values ​​corresponding to different uplink channels can be the same or configured separately. This example uses the path loss offset values ​​of different uplink channels (such as PUSCH, PUCCH, SRS, and PRACH) to be configured separately as an example:

[0150] In the above RRC structure, powerControlOffsetSS represents the offset relative to the SSB power. nzp-CSI-RS-ResourceId represents the CSI-RS resource index, and PUSCH-pathloss-delta-Id, PUCCH-pathloss-delta-Id, SRS-pathloss-delta-Id, and PRACH-pathloss-delta-Id represent the path loss offset values ​​corresponding to different uplink channels (PUSCH, PUCCH, SRS, and PRACH), respectively.

[0151] When the reference signal power is the power of the CSI-RS, the path loss offset value is associated with the CSI-RS index (or CSI-RS resource index), which can more accurately compensate for the difference between the path losses.

[0152] The following is an example of an RRC structure that configures the path loss offset value to be associated with the SSB index (or SSB resource index). The path loss offset values ​​corresponding to different uplink channels can be the same or configured separately. This example uses the path loss offset values ​​of different uplink channels (such as PUSCH, PUCCH, SRS, and PRACH) to be configured separately as an example:

[0153] In the above RRC structure, SSB-Index represents the SSB index, PUSCH-pathloss-delta-Id, PUCCH-pathloss-delta-Id, SRS-pathloss-delta-Id, and PRACH-pathloss-delta-Id respectively represent the identifiers of the path loss offset values ​​corresponding to different uplink channels (PUSCH, PUCCH, SRS, and PRACH).

[0154] When the reference signal power is the power of the SSB, associating the path loss offset value with the SSB index (or SSB resource index) can more accurately compensate for the difference between the path losses.

[0155] The following is an example of an RRC structure that configures a path loss offset value associated with an SRS resource set index. The path loss offset values ​​for different uplink channels can be the same or configured separately. This example uses the path loss offset values ​​for different uplink channels (such as SRS and PUSCH) as an example:

[0156] In the above RRC structure, SRS-ResourceSetId represents the SRS resource set index, while SRS-ResourceSetId and PUSCH-pathloss-delta-Id identify the path loss offset values ​​corresponding to different uplink channels (SRS and PUSCH), respectively. This solution is primarily applicable when the uplink information is PUSCH and SRS. In PUSCH transmission, each PUSCH is associated with an SRS resource set. Therefore, associating the path loss offset value with the SRS resource set index can more accurately compensate for PUSCH path loss.

[0157] The above introduces various ways to configure the path loss offset value. The ways to configure the path loss offset value in the embodiments of the present application are not limited to these and are not listed here one by one. Using the path loss offset value configured by the second network device, the terminal device can determine the path loss between it and one or more first network devices and send uplink information to the first network device based on the path loss. If the second network device does not configure a path loss offset value for the terminal device, the terminal device defaults to the path loss offset value of 0 when determining the path loss between it and the first network device.

[0158] Example 2:

[0159] In this embodiment, the path loss offset value is indicated via a MAC CE, i.e., the indication information sent by the second network device to the terminal device includes a MAC CE. For example, the second network device configures the path loss offset value for the terminal device via a MAC CE. Because MAC CEs have a shorter latency than RRC signaling, this embodiment uses a MAC CE to configure the path loss offset value. This shorter latency allows the terminal device to quickly receive the path loss offset and calculate the path loss between the terminal device and one or more first network devices (e.g., uplink TRP).

[0160] The following is a possible MAC CE structure, denoted as MAC CE structure 1. The MAC CE structure 1 includes one or more of the following information:

[0161] (1) Serving cell ID,

[0162] (2) Bandwidth part index (BWP ID),

[0163] (3) Path loss offset,

[0164] (4) Reserved bits (reserved bits are optional).

[0165] In the MAC CE structure 1, an associated path loss offset value is configured for a specific service cell and / or BWP. In the above example, the path loss offset values ​​corresponding to different uplink channels are the same. In other examples, the path loss offset values ​​corresponding to different uplink channels can be configured separately. For example, the MAC CE structure 1 is modified to include multiple path loss offset values, each path loss offset value corresponds to a different uplink channel (such as a PUSCH channel, a PUCCH channel, an SRS channel, and a PRACH channel); when the terminal device sends uplink information, it uses the path loss offset value corresponding to the uplink channel to determine the path loss, and sends the uplink information based on the path loss.

[0166] The following is a possible MAC CE structure, denoted as MAC CE structure 2. The MAC CE structure 2 includes one or more of the following information:

[0167] (1) Serving cell ID,

[0168] (2) Bandwidth part index (BWP ID),

[0169] (3) Path loss offset,

[0170] (4) Path loss reference signal index,

[0171] (5) Reserved bits (reserved bits are optional).

[0172] In the MAC CE structure 2, an associated path loss offset value is configured for one or more of a specific service cell, BWP, and path loss reference signal. In the above example, the path loss offset values ​​corresponding to different uplink channels are the same. In other examples, the path loss offset values ​​corresponding to different uplink channels can be configured separately. For example, the MAC CE structure 2 is modified to include multiple path loss offset values, each path loss offset value corresponds to a different uplink channel (such as a PUSCH channel, a PUCCH channel, an SRS channel, and a PRACH channel); when the terminal device sends uplink information, it uses the path loss offset value corresponding to the uplink channel to determine the path loss, and sends the uplink information based on the path loss.

[0173] The following is a possible MAC CE structure, denoted as MAC CE structure 3, which includes one or more of the following information:

[0174] (1) Serving cell ID,

[0175] (2) Bandwidth part index (BWP ID),

[0176] (3) Path loss offset,

[0177] (4) Path loss reference signal index,

[0178] (5) Sounding Reference Signal Resource Indicator (SRI) index,

[0179] (6) Reserved bits (reserved bits are optional).

[0180] In the MAC CE structure 3, an associated path loss offset value is configured for one or more of a specific service cell, a BWP, a path loss reference signal, and an SRI. In the above example, the path loss offset values ​​corresponding to different uplink channels are the same. In other examples, the path loss offset values ​​corresponding to different uplink channels can be configured separately. For example, the MAC CE structure 3 is modified to include multiple path loss offset values, each path loss offset value corresponding to a different uplink channel (such as a PUSCH channel, a PUCCH channel, an SRS channel, and a PRACH channel); when the terminal device sends uplink information, it uses the path loss offset value corresponding to the uplink channel to determine the path loss, and sends the uplink information based on the path loss.

[0181] The following is a possible MAC CE structure, denoted as MAC CE structure 4. The MAC CE structure 4 includes one or more of the following information:

[0182] (1) Serving cell ID,

[0183] (2) Bandwidth part index (BWP ID),

[0184] (3) Path loss offset,

[0185] (4) Path loss reference signal index,

[0186] (5) Sounding reference signal resource set index,

[0187] (6) Reserved bits (reserved bits are optional).

[0188] In the MAC CE structure 4, an associated path loss offset value is configured for one or more of a specific service cell, BWP, path loss reference signal, and sounding reference signal resource set. In the above example, the path loss offset values ​​corresponding to different uplink channels are the same. In other examples, the path loss offset values ​​corresponding to different uplink channels can be configured separately. For example, the MAC CE structure 3 is modified to include multiple path loss offset values, each path loss offset value corresponds to a different uplink channel (such as a PUSCH channel, a PUCCH channel, an SRS channel, and a PRACH channel); when the terminal device sends uplink information, it uses the path loss offset value corresponding to the uplink channel to determine the path loss, and sends the uplink information based on the path loss.

[0189] Example 3:

[0190] In this embodiment, the path loss offset value is configured via RRC signaling and indicated via DCI. Specifically, the indication information sent by the second network device to the terminal device includes RRC signaling and DCI. For example, the second network device configures one or more sets of path loss offset values ​​for the terminal device via RRC signaling and dynamically maps the path loss offset values ​​corresponding to different spatial information using fields in the DCI. In this way, the path loss offset value can be adjusted more flexibly and dynamically, and path loss differences can be compensated for more accurately.

[0191] This embodiment includes at least the following two methods:

[0192] Method 1: Configure a path loss offset value set through RRC signaling, and indicate the path loss offset values ​​associated with different spatial information in the path loss offset value set through DCI. Since different first network devices (such as uplink TRPs) may correspond to different spatial information, indicating the path loss offset values ​​associated with different spatial information through DCI is equivalent to indicating the path loss offset values ​​associated with different first network devices (such as uplink TRPs).

[0193] Figure 4A is a schematic diagram of a path loss offset value set associated with one or more uplink TRPs in an embodiment of the present application. As shown in Figure 4A, a path loss offset value set 0 is configured for the terminal device through RRC signaling, and the path loss offset value set 0 includes 8 path loss offset values; the path loss offset value associated with one or more uplink TRPs in the path loss offset value set 0 is indicated by the DCI. In the example of Figure 4A, path loss offset value 0 is associated with uplink TRP 0, path loss offset value 1 is associated with uplink TRP 1, path loss offset value 2 is associated with uplink TRP 2, path loss offset value 3 is associated with uplink TRP 3, path loss offset value 4 is associated with uplink TRP 4, path loss offset value 5 is associated with uplink TRP 5, path loss offset value 6 is associated with uplink TRP 6, and path loss offset value 7 is associated with uplink TRP 7.

[0194] Method 2: Configure multiple path loss offset value sets through RRC signaling, and the multiple path loss offset value sets correspond one-to-one to multiple first network devices (such as uplink TRPs). And indicate the path loss offset values ​​associated with different spatial information in the path loss offset value set through DCI. Since different first network devices (such as uplink TRPs) may correspond to different spatial information, indicating the path loss offset values ​​associated with different spatial information through DCI is equivalent to indicating the path loss offset values ​​associated with different first network devices (such as uplink TRPs).

[0195] Figure 4B is a schematic diagram of the one-to-one correspondence between multiple path loss offset value sets and multiple uplink TRPs in an embodiment of the present application. As shown in Figure 4B, path loss offset value set 0 and path loss offset value set 1 are configured for the terminal device through RRC signaling; wherein, path loss offset value set 0 is associated with uplink TRP 0, and path loss offset value set 1 is associated with uplink TRP 1. The path loss offset values ​​in different path loss offset value sets are the same, partially the same, or completely different. Then, through DCI, the path loss offset value associated with uplink TRP 0 in path loss offset value set 0 can be indicated, and the path loss offset value associated with uplink TRP 1 in path loss offset value set 1 can be indicated.

[0196] It can be seen that the above method 1 only needs to configure one path loss offset value set, while method 2 needs to configure multiple path loss offset value sets. Method 2 is more flexible, but the mapping method between the DCI field will be more complicated.

[0197] In some implementations, for the first approach described above, RRC signaling configures a path loss offset value set; and the DCI indicates the path loss offset value corresponding to the first network device within the path loss offset value set. For example, the SRI field, other existing fields, or a newly added field in the DCI may be used to indicate the path loss offset value corresponding to the first network device within the path loss offset value set.

[0198] In this case, the second network device also sends mapping relationship information to the terminal device. For example, the mapping relationship information can be the first information. The terminal device receives the mapping relationship information (the mapping relationship information can be RRC information). The mapping relationship information indicates the mapping relationship between the state value of the SRI field and the path loss offset value in the path loss offset value set. For example, RRC signaling configures a path loss offset value set, and the path loss offset value set includes path loss offset value 0, path loss offset value 1, path loss offset value 2, and path loss offset value 3. The DCI indicates the mapping relationship between each state value of the SRI field in the DCI and each path loss offset value in the path loss offset value set. For example, the SRI field value is 00, indicating that it contains a path loss offset value of 0; the SRI field value is 01, indicating that it contains a path loss offset value of 1; the SRI field value is 10, indicating that it contains a path loss offset value of 2; the SRI field value is 11, indicating that it contains a path loss offset value of 3.

[0199] The terminal device determines the path loss offset value corresponding to the first network device based on the RRC signaling, the mapping relationship information, and the DCI. For example, if the terminal device receives a DCI, and the SRI field in the DCI has a value of 11, it means that the second network device has configured for the terminal device a path loss offset value of 3 from the path loss offset value set configured by the RRC signaling.

[0200] Taking the uplink information as PUSCH as an example, when RRC signaling configures a path loss offset value set, the network device sends mapping relationship information to the terminal device (the mapping relationship information may be RRC information), for example, the mapping relationship information may be second information. The mapping relationship information configures the mapping relationship between the path loss offset value and the status value of the SRI field in the DCI. For example, the mapping relationship information may include one or more of the following:

[0201] (1) SRI-PUSCH power control index

[0202] (2) PUSCH path loss reference signal

[0203] (3) PUSCH path loss offset

[0204] The RRC structure example is as follows:

[0205] The path loss offset value is indicated by the SRI field in the DCI. Each state value of the SRI in the DCI corresponds to an index of a path loss offset value, and the path loss offset value associated with the PUSCH is dynamically indicated by different state values ​​of the SRI.

[0206] In some implementations, for the second approach described above, RRC signaling configures multiple path loss offset value sets, with different path loss offset value sets associated with different spatial information; and the DCI indicates the path loss offset value corresponding to the first network device in each path loss offset value set. For example, the SRI field in the DCI may be used to indicate the path loss offset value corresponding to the first network device in each path loss offset value set.

[0207] In this case, the terminal device receives mapping relationship information (the mapping relationship information may include RRC information), where the mapping relationship information indicates a mapping relationship between the state value of the SRI field and the path loss offset value in the path loss offset value set;

[0208] The terminal device determines a set of path loss offset values ​​applied by the first network device;

[0209] The terminal device determines the path loss offset value corresponding to the first network device from the path loss offset value set applied by the first network device based on the RRC signaling, mapping relationship information and DCI.

[0210] Taking the uplink information as PUSCH as an example, when multiple path loss offset value sets are configured and the multiple path loss offset value sets correspond one-to-one to multiple uplink TRPs, the network device sends mapping relationship information to the terminal device (the mapping relationship information can be RRC information), and the mapping relationship information configures the mapping relationship between the path loss offset value in each path loss offset value set and the status value of the SRI field in the DCI.

[0211] The network device sends a DCI to the terminal device, and the SRI in the DCI indicates the corresponding path loss offset value.

[0212] The terminal device first determines the path loss offset value set for the uplink TRP application through the TCI state or SRS resource set. Then, the terminal device determines the path loss offset value associated with the PUSCH based on the mapping relationship information and the SRI field in the DCI. Each state value of the SRI field in the DCI corresponds to an index of a path loss offset value, and the path loss offset value associated with the PUSCH is dynamically indicated by the different state values ​​of the SRI field.

[0213] For example, the second network device configures two path loss offset value sets through RRC, where path loss offset value set 0 is associated with spatial information 0, and path loss offset value set 1 is associated with spatial information 1. The second network device sends mapping relationship information and DCI to the terminal device. When the terminal device sends uplink information to the uplink TRP, it first determines the path loss offset value set applied to the TRP based on the TCI state or SRS resource set of the uplink TRP. Assuming that the TCI state or SRS resource set of the uplink TRP matches spatial information 0, the path loss offset value for the uplink TRP will be determined from the path loss offset value set associated with spatial information 0 (i.e., path loss offset value set 0). Furthermore, based on the mapping relationship information and DCI, the path loss offset value indicated by the DCI can be determined from the path loss offset value set 0, and the path loss offset value is the path loss offset value configured by the second network device for the uplink TRP.

[0214] The above embodiments 1-3 describe how a second network device configures a path loss offset value for a terminal device. This path loss offset can be used to determine the path loss when the terminal device sends uplink information to the first network device. The first network device may include an uplink TRP, and the second network device may be a device different from the first network device.

[0215] The following describes how the second network device determines the path loss offset value.

[0216] Example 4:

[0217] In this embodiment, the terminal device sends an SRS to one or more first network devices (such as an uplink TRP) at a first power. Each first network device receives the SRS, and sends the received power of the SRS and the transmitted power of the SRS (that is, the first power) to the second network device (such as a macro base station, other TRPs different from the first network device, etc.); or, the first network device sends the difference between the transmitted power of the SRS (that is, the first power) and the received power of the SRS to the second network device. In this way, the second network device can determine the path loss between the terminal device and the first network device, and then combine the path loss between the terminal device and the second network device to determine the path loss offset value. The path loss offset value can be determined in the following way:

[0218] Path loss offset value = path loss between the terminal device and the second network device – path loss between the terminal device and the first network device; or,

[0219] Path loss offset value=path loss between the terminal device and the first network device−path loss between the terminal device and the second network device.

[0220] For the path loss between the terminal device and the second network device, at least the following methods can be used:

[0221] Method 1:

[0222] The terminal device sends an SRS to the second network device; accordingly, the second network device can calculate the path loss between the terminal device and the second network device based on the transmission power and reception power of the SRS.

[0223] Method 2:

[0224] The terminal device sends the path loss between the terminal device and the second network device to the second network device. The path loss may be determined based on the CSI-RS or SSB. Alternatively, the terminal device may send a layer 1 RSRP value or a layer 3 filtered RSRP value to the second network device, and the second network device determines the path loss between the terminal device and the second network device based on the layer 1 RSRP value or the layer 3 filtered RSRP value and the transmit power of the CSI-RS or SSB.

[0225] Figure 5A is a flowchart of the implementation of Example 4 of the present application. In this embodiment, the first network device can be a TRP (or distributed TRP), and the second network device can be a macro base station, a base station, or a TRP different from the first network device. For the convenience of introduction, Figure 5A shows an example of determining and configuring a path loss offset value for a first network device; for the case of multiple first network devices, the path loss offset value can be determined and configured for each first network device in the manner shown in Figure 5A. As shown in Figure 5A, the following steps are included:

[0226] S511. The terminal device sends an SRS to the first network device;

[0227] S512. The first network device receives the SRS, measures the RSRP value of the SRS, and sends the RSRP of the SRS to the second network device. In some examples, the first network device may also send the transmit power of the SRS to the second network device. The transmit power of the SRS may be pre-stored by the first network device or sent to the first network device by the terminal device. Alternatively, the first network device may send the difference between the transmit power of the SRS and the RSRP to the second network device.

[0228] S513. The second network device may determine a path loss between the terminal device and the first network device based on the transmit power of the SRS and the RSRP of the SRS, or based on a difference between the transmit power of the SRS and the RSRP of the SRS. The second network device may determine a path loss offset value based on the path loss between the terminal device and the first network device and the path loss between the terminal device and the second network device. The path loss offset value is equal to the difference between the two path losses.

[0229] S514: The second network device sends path loss information to the terminal device. The path loss information includes a path loss offset value. The path loss information may also include a path loss reference signal index and / or a reference signal power. This step may refer to the path loss offset value configuration method described in Examples 1 to 3 above and will not be repeated here.

[0230] S515. The terminal device calculates the transmission power when sending uplink information based on the path loss offset value, and sends the uplink information.

[0231] Figure 5B is a second implementation flow chart of Example 4 of the present application. In this embodiment, the first network device can be a TRP (or distributed TRP), and the second network device can be a macro base station, a base station, or a TRP different from the first network device. For ease of introduction, Figure 5B shows an example of determining and configuring a path loss offset value for a first network device; for the case of multiple first network devices, the path loss offset value can be determined and configured for each first network device in the manner shown in Figure 5B. As shown in Figure 5B, the following steps are included:

[0232] S521. The terminal device sends a first SRS to the first network device, and sends a second SRS to the second network device.

[0233] S522. The first network device receives the first SRS, measures the RSRP value of the first SRS, and sends the RSRP of the first SRS to the second network device. In some examples, the first network device may also send the transmit power of the first SRS to the second network device. The transmit power of the first SRS may be sent in advance by the uplink first network device or by the terminal device to the first network device; or, if the transmit power of the first SRS is known, the first network device does not need to send the transmit power of the first SRS to the second network device. Alternatively, the first network device may send the difference between the transmit power of the first SRS and the RSRP to the second network device.

[0234] S523. The second network device may determine the path loss between the terminal device and the first network device based on the transmit power of the first SRS and the RSRP of the first SRS, or based on the difference between the transmit power of the first SRS and the RSRP of the first SRS. Furthermore, the second network device receives the second SRS, measures the RSRP value of the second SRS, and determines the path loss between the terminal device and the second network device based on the transmit power of the second SRS and the RSRP value of the second SRS. The transmit power of the second SRS may be sent by the terminal device to the second network device; or, if the transmit power of the second SRS is known, the terminal device does not need to send the transmit power of the second SRS to the second network device. Afterwards, the second network device determines a path loss offset value based on the path loss between the terminal device and the first network device and the path loss between the terminal device and the second network device. The path loss offset value is equal to the difference between the two aforementioned path losses.

[0235] S524: The second network device sends path loss information to the terminal device. The path loss information includes a path loss offset value. The path loss information may also include a path loss reference signal index and / or a reference signal power. This step may refer to the path loss offset value configuration method described in Examples 1 to 3 above and will not be repeated here.

[0236] S525. The terminal device calculates the transmission power when sending uplink information based on the path loss offset value, and sends the uplink information.

[0237] In the above process, the power (ie, the above-mentioned first power) of the terminal device when sending the SRS (such as the first SRS) to the first network device can be determined in at least the following two ways:

[0238] Mode 1: The first power is a fixed power: for example, the first power is a predefined power, or the first power is configured through third information;

[0239] Mode 2: The first power is determined by open-loop power control.

[0240] The following are detailed introductions:

[0241] Method 1: Use fixed power to send the SRS used to obtain the path loss offset value:

[0242] In some implementations, the terminal device sends an SRS for adjusting path loss at a first power. The first power may be a predefined power value, or the first power may be configured by the network device through third information, which may be carried in RRC signaling or MAC CE.

[0243] For example, the first power is a predefined power value, such as the maximum transmit power, 1 / m of the maximum transmit power, the maximum transmit power –n dB, or a fixed power value. 1 / m of the maximum transmit power can be understood as a proportional reduction of the maximum transmit power. For different uplink TRPs, the value of m can be different, and m is a positive integer. The maximum transmit power –n dB can be understood as a reduction of n dB as the first power based on the maximum transmit power. For different uplink TRPs, the value of n dB can be different, and n is a positive integer. At this time, the first power is known to the terminal device and the network device.

[0244] For another example, the first power is configured or indicated by the network device based on the channel quality, such as through RRC signaling or MAC CE. The network device directly configures the first power for the terminal device, for example, the network device configures the first power through p bits in RRC signaling or MAC CE, and the configuration step size can be k dB, where k is a positive integer, such as k=3.

[0245] If the terminal device sends an SRS to the first network device (such as an uplink TRP), the first network device (such as an uplink TRP) will interact with the second network device (such as a macro base station, or other TRPs different from the first network device, etc.) to measure the RSRP value obtained by the SRS, or interact with the difference between the first power and the SRS RSRP. The second network device determines the path loss between the terminal device and the first network device based on the difference between the first power of the SRS and the SRS RSRP, and then combines the path loss between the terminal device and the second network device to determine the path loss offset value, and configure it to the terminal device in any of the ways in Examples 1 to 3. As shown in Figure 6, the terminal device sends an SRS to the first network device at a first power, and the first network device sends the first power and the RSRP value of the SRS to the second network device through an ideal backhaul link, or sends the difference between the first power and the RSRP value of the SRS to the second network device; the second network device can determine the path loss between the terminal device and the first network device based on the received information. The second network device sends an SSB / CSI-RS to the terminal device. The terminal device uses the SSB / CSI-RS to determine the path loss between the terminal device and the second network device, and sends the path loss between the terminal device and the second network device to the second network device. The second network device uses the path loss between the terminal device and the first network device and the path loss between the terminal device and the second network device to determine a path loss offset value, and configures a reference signal power and the path loss offset value for the terminal device.

[0246] The method of sending SRS with fixed power does not require the terminal device to calculate the SRS power, which reduces the complexity of power calculation and makes implementation simpler.

[0247] Method 2: Use open-loop power control to determine the SRS power:

[0248] The power of SRS is determined by the following formula:

[0249] As can be seen from the above formula, the closed-loop power is adjusted to 0, and only the open-loop power control is used to determine the power of the SRS;

[0250] Among them, Po is the target power associated with one or more uplink TRPs configured by the network device, and the path loss is determined based on the specific downlink reference signal configured by the network device.

[0251] This method requires the terminal device to calculate the SRS transmission power by itself. It is more complex than method 1, but the SRS power value is more accurate.

[0252] In the above process, the power of the terminal device when sending the SRS (such as the second SRS) to the second network device can be determined in at least the following three ways:

[0253] Mode 1: Calculate the path loss between the terminal device and the second network device according to the path loss reference signal configured by the second network device, and determine the transmit power of the second SRS according to the path loss;

[0254] Mode 2: The transmission power of the second SRS is fixed. For details, please refer to the above-mentioned Mode 1 for determining the transmission power of the first SRS, which will not be described in detail here.

[0255] Mode 3: determining the transmission power of the second SRS through open-loop power control. Specific details can be found in Mode 2 for determining the transmission power of the first SRS, which will not be described in detail here.

[0256] An embodiment of the present application also proposes a communication method, which can be applied to a second network device, for configuring or indicating a path loss offset value to a terminal device, and the path loss offset value is used to determine the path loss between the terminal device and one or more first network devices. The second network device is a device different from the first network device. The first network device may include a TRP in a distributed communication system, and the second network device may include a base station, a macro base station, or a TRP different from the first network device. As shown in Figure 7, Figure 7 is a schematic flow chart of a communication method 700 according to an embodiment of the present application. The method can optionally be applied to the system shown in Figure 1 or Figure 2, but is not limited thereto. The method includes at least part of the following content.

[0257] S710. The second network device sends indication information to the terminal device, where the indication information is used to indicate a path loss offset value, where the path loss offset value is used to determine the path loss between the terminal device and the first network device, where the path loss is used by the terminal device to send uplink information to the first network device.

[0258] The first network device may include a TRP, such as a distributed TRP.

[0259] The second network device may include a macro base station, a base station, or a TRP different from the first network device.

[0260] In some embodiments, the second network device may configure or indicate path loss information to the terminal device, where the path loss information includes a path loss offset value and may also include a path loss reference signal index and / or a reference signal power; wherein,

[0261] The path loss reference signal index may be configured by the second network device through radio resource control (RRC) signaling, or updated through a media access control (MAC) control element (CE), or determined by a preset rule, or dynamically mapped through the SRS resource indicator (SRI) field in the downlink control information (DCI). It is worth noting that the network device and one or more uplink TRPs are different devices;

[0262] The reference signal power may be determined according to the reference signal power configured by the second network device. The reference signal power is the transmit power of the path loss reference signal, such as the transmit power of the CSI-RS, the transmit power of the SSB, or the transmit power of the PRS.

[0263] In some embodiments, the path loss offset value is associated with one or more of the following transmission parameters:

[0264] Type of uplink information;

[0265] Path loss reference signal index;

[0266] SRS resource indication index;

[0267] Spatial information.

[0268] In some embodiments, the spatial information includes at least one of SRS resource set information, transmission configuration indication (TCI) status information, antenna panel information, control resource set (CORESET) group information, beam information, and reference signal resource information.

[0269] In some embodiments, the path loss reference signal index includes one or more of the following: CSI-RS index, CSI-RS resource index, SSB index, SSB resource index, PRS index, PRS resource index.

[0270] In some embodiments, the indication information includes radio resource control RRC signaling; or,

[0271] The indication information includes MAC CE; or,

[0272] The indication information includes RRC signaling and downlink control information DCI.

[0273] In some implementations, RRC signaling configures a set of path loss offset values;

[0274] The DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set. For example, the SRI field or a newly added field in the DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

[0275] In some implementations, the second network device sends mapping relationship information to the terminal device, where the mapping relationship information indicates a mapping relationship between a state value of the SRI field and a path loss offset value in the path loss offset value set.

[0276] Specifically, RRC signaling can configure one or more path loss offset value sets. If multiple path loss offset value sets are configured, different path loss offset value sets are associated with different spatial information; and the DCI indicates the path loss offset value corresponding to the first network device in each path loss offset value set. For example, the SRI field in the DCI indicates the path loss offset value corresponding to the first network device in each path loss offset value set.

[0277] The specific manner in which the second network device configures and / or indicates the path loss offset value can be referred to above embodiments 1 to 3 and will not be repeated here.

[0278] In some embodiments, the second network device determines a path loss offset value based on a first path loss and a second path loss; wherein the first path loss includes a path loss between the terminal device and one or more first network devices, and the second path loss includes a path loss between the terminal device and the second network device.

[0279] For other implementations of the second network device, reference may be made to the contents related to the second network device in the aforementioned embodiments, which will not be described in detail here.

[0280] The present application also provides a communication method that can be applied to a first network device (e.g., a TRP), as shown in FIG8 , which is a schematic flow chart of a communication method 800 according to an embodiment of the present application. The method can optionally be applied to the system shown in FIG1 or FIG2 , but is not limited thereto. The method includes at least part of the following content.

[0281] S810. A first network device receives a first SRS.

[0282] S820: The first network device transmits the received power of the first SRS to the second network device; alternatively, the first network device transmits the difference between the transmit power of the first SRS and the received power of the first SRS to the second network device. Alternatively, the first network device transmits the received power of the first SRS to the second network device. This method is applicable when the transmit power of the first SRS is known, and thus the first network device does not need to transmit the transmit power of the first SRS to the second network device.

[0283] The second network device is a device different from the first network device. For example, the first network device includes a TRP, such as a distributed TRP, and the second network device includes a base station, a macro base station, or a TRP.

[0284] The first network device may receive a first SRS from a terminal device and send the received power of the first SRS and the transmit power of the first SRS to the second network device, or send the difference between the transmit power of the first SRS and the received power of the first SRS to the second network device, or send the received power of the first SRS to the second network device, so that the second network device can determine the path loss between the network device and the first network device, thereby further determining the path loss offset value. The received power of the first SRS may refer to a measured value when the first network device receives the first SRS, that is, the RSRP value of the first SRS.

[0285] For other implementations of the first network device, reference may be made to the contents related to the first network device in the aforementioned embodiments, which will not be described in detail here.

[0286] The above content introduces a method in which the terminal device determines the path loss between the terminal device and the first network device based on the path loss offset value, and then adjusts the transmission power when sending uplink information to the first network device. The embodiment of the present application also proposes a communication method, which adjusts the transmission power of the terminal device when sending uplink information to the uplink TRP through closed-loop power control. In order to improve the efficiency of power adjustment and save the overhead of DCI (DCI can be used for closed-loop power adjustment), the numerical range of closed-loop power adjustment is expanded in the method proposed in the embodiment of the present application.

[0287] FIG9 is a flowchart of an implementation of a communication method 900 according to an embodiment of the present application, including:

[0288] S910. The terminal device receives DCI sent by the second network device, where the number of bits of a Transmission Power Control (TPC) field in the DCI is greater than or equal to 3.

[0289] S920. The terminal device adjusts the transmission power of the uplink information according to the DCI.

[0290] In some embodiments, the terminal device uses the adjusted transmission power to send uplink information to the first network device or the second network device.

[0291] For example, the first network device may include a TRP, and the second network device may include a base station, a macro base station, or a TRP different from the first network device.

[0292] In some implementations, the absolute power adjustment value indicated by the TPC field satisfies the following conditions:

[0293] The absolute power adjustment value is positive; or,

[0294] The absolute power adjustment value is greater than or equal to 8dB; or,

[0295] The absolute power adjustment value is negative; or,

[0296] The absolute power adjustment value is less than or equal to -8dB.

[0297] In some implementations, the accumulated power adjustment value indicated by the TPC field satisfies the following conditions:

[0298] The accumulated power adjustment value is negative; or,

[0299] The cumulative power adjustment value is less than or equal to -3dB.

[0300] The absolute power adjustment value and cumulative power adjustment value indicated by the TPC field can be any integer value that meets certain conditions. For example, the absolute power adjustment value can be any integer value greater than or equal to 8dB, such as 9dB, 10dB, 15dB, etc.; another example, the cumulative power adjustment value can be any integer value less than or equal to -3dB, such as -4dB, -6dB, -8dB, -9dB, etc. The absolute power adjustment value and cumulative power adjustment value indicated by the TPC field can also be values ​​that meet certain rules, such as multiples of 3, 4, 6, 8, etc.

[0301] In one example, for PUSCH or SRS, the number of bits of the TPC field is 3 bits, and the adjustment range of the cumulative power adjustment value and the absolute power adjustment value is increased, as shown in Table 1. In Table 1, the additions include: (1) the value of the TPC field is 4, indicating that the cumulative power adjustment value of PUSCH or SRS is -12dB and the absolute power adjustment value of PUSCH or SRS is -12dB; (2) the value of the TPC field is 5, indicating that the cumulative power adjustment value of PUSCH or SRS is -9dB and the absolute power adjustment value of PUSCH or SRS is -8dB; (3) the value of the TPC field is 6, indicating that the cumulative power adjustment value of PUSCH or SRS is -6dB and the absolute power adjustment value of PUSCH or SRS is 8dB; (4) the value of the TPC field is 7, indicating that the cumulative power adjustment value of PUSCH or SRS is -3dB and the absolute power adjustment value of PUSCH or SRS is 12dB.

[0302] Table 1

[0303] In one example, for PUCCH, the number of bits in the TPC field is extended to 3 bits, and the adjustment range of negative values ​​is increased, as shown in Table 2. In Table 2, the additions include: (1) the value of the TPC field is 4, indicating that the cumulative power adjustment value of the PUCCH is -12dB; (2) the value of the TPC field is 5, indicating that the cumulative power adjustment value of the PUCCH is -9dB; (3) the value of the TPC field is 6, indicating that the cumulative power adjustment value of the PUCCH is -6dB; (4) the value of the TPC field is 7, indicating that the cumulative power adjustment value of the PUCCH is -3dB.

[0304] Table 2

[0305] In the embodiment of the present application, different uplink TRPs may correspond to different closed-loop adjustment states, and each closed-loop adjustment state may correspond to its own TPC. The number of increased closed-loop adjustment states is greater than 2, for example, 4.

[0306] By expanding the number of bits of the TPC field in the DCI to greater than or equal to 3, a power adjustment value with a larger numerical range (including absolute power adjustment value and cumulative power adjustment value) can be indicated, thereby reducing the number of closed-loop power adjustments and achieving the appropriate power value through fewer adjustments, thereby saving DCI overhead.

[0307] The DCI used by a terminal device for closed-loop power adjustment can be sent by a network device. For example, a second network device sends DCI to a terminal device, where the number of bits in the TPC field in the DCI is greater than or equal to 3; this DCI is used by the terminal device to determine the transmit power of uplink information. The characteristics of the absolute power adjustment value and the cumulative power adjustment value indicated by the TPC field have been described above and will not be repeated here.

[0308] In some embodiments, in a distributedly deployed network, a second network device (such as a macro base station, TRP, etc.) sends a DCI to a terminal device, where the DCI is used for the terminal device to adjust the transmission power of uplink information using a closed-loop power control adjustment method. The uplink information is information sent by the terminal device to one or more first network devices (such as uplink TRP); the number of bits of the TPC field in the DCI is greater than or equal to 3.

[0309] The present application also provides a terminal device. FIG10 is a schematic block diagram of a terminal device 1000 according to an embodiment of the present application. The terminal device 1000 may include:

[0310] The first processing module 1010 determines the path loss between the terminal device and the first network device according to the path loss offset value;

[0311] The first transceiver module 1020 is configured to send uplink information to the first network device based on the path loss.

[0312] In some implementations, the first transceiver module 1020 is further configured to receive indication information sent by the second network device, where the indication information is used to indicate a path loss offset value.

[0313] In some embodiments, the path loss offset value is associated with one or more of the following transmission parameters:

[0314] Type of uplink information;

[0315] Path loss reference signal index;

[0316] SRS resource indication index;

[0317] Spatial information.

[0318] In some embodiments, the spatial information includes at least one of the following:

[0319] SRS resource collection information;

[0320] TCI status information;

[0321] Antenna panel information;

[0322] CORESET group information;

[0323] Beam information;

[0324] Reference signal resource information.

[0325] In some embodiments, the path loss reference signal index includes one or more of the following: a CSI-RS index, a CSI-RS resource index, an SSB index, an SSB resource index, a fixed PRS index, and a PRS resource index.

[0326] In some implementations, the first network device is associated with one or more of the transmission parameters.

[0327] In some embodiments, the first processing module 1010 is used to determine a path loss offset value associated with the uplink information based on one or more transmission parameters associated with the uplink information; and determine the path loss between the terminal device and the first network device based on the path loss offset value associated with the uplink information.

[0328] In some embodiments, the indication information includes radio resource control RRC signaling; or,

[0329] The indication information includes MAC CE; or,

[0330] The indication information includes RRC signaling and downlink control information DCI.

[0331] In some implementations, the indication information includes RRC signaling and DCI, including:

[0332] RRC signaling configures a path loss offset value set;

[0333] The DCI indicates the path loss offset value corresponding to the uplink information in the path loss offset value set.

[0334] In some implementations, the path loss offset value corresponding to the uplink information in the path loss offset value set indicated by the DCI includes:

[0335] The resource indication field SRI field or a newly added field in the DCI indicates the path loss offset value corresponding to the uplink information in the path loss offset value set.

[0336] In some embodiments, the first transceiver module 1020 is further configured to receive mapping relationship information indicating a mapping relationship between a state value of the SRI field and a path loss offset value in a path loss offset value set;

[0337] The first processing module is used to determine a path loss offset value corresponding to the uplink information according to the RRC signaling, the mapping relationship information and the DCI.

[0338] In some embodiments, the first transceiver module 1020 is further configured to receive mapping relationship information indicating a mapping relationship between a state value of the SRI field and a path loss offset value in a path loss offset value set;

[0339] The first processing module 1010 is used to determine a set of path loss offset values ​​applied by the first network device; the terminal device determines the path loss offset value corresponding to the uplink information based on RRC signaling, mapping relationship information and DCI.

[0340] In some implementations, the first transceiver module 1020 is further configured to send a first SRS to the first network device at a first power, where the first SRS is used to determine a path loss offset value.

[0341] In some embodiments, the first power is a predefined power; or,

[0342] The first power is configured by third information.

[0343] In some implementations, the third information is carried by RRC signaling or MAC CE.

[0344] In some embodiments, the first power is determined by open loop power control.

[0345] In some implementations, the first transceiver module 1020 is further configured to send a second SRS to the second network device; or send a path loss between the terminal device and the second network device to the second network device.

[0346] In some implementations, the uplink information includes at least one of: PUSCH information, PUCCH information, SRS information, and PRACH information.

[0347] The terminal device 1000 of the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the terminal device 1000 can be found in the corresponding descriptions in the above-mentioned method embodiments, which will not be repeated here. It should be noted that the functions described in the various modules (sub-modules, units or components, etc.) of the terminal device 1000 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).

[0348] The present application also provides a second network device. FIG11 is a schematic block diagram of a second network device 1100 according to an embodiment of the present application. The second network device 1100 may include:

[0349] The second transceiver module 1110 is used to send indication information to the terminal device, where the indication information is used to indicate a path loss offset value, which is used to determine the path loss between the terminal device and the first network device, and the path loss is used by the terminal device to send uplink information to the first network device.

[0350] In some embodiments, the path loss offset value is associated with one or more of the following transmission parameters:

[0351] Type of uplink information;

[0352] Path loss reference signal index;

[0353] SRS resource indication index;

[0354] Spatial information.

[0355] In some embodiments, the spatial information includes at least one of the following:

[0356] SRS resource collection information;

[0357] TCI status information;

[0358] Antenna panel information;

[0359] CORESET group information;

[0360] Beam information;

[0361] Reference signal resource information.

[0362] In some embodiments, the path loss reference signal index includes one or more of the following: CSI-RS index, CSI-RS resource index, SSB index, SSB resource index, PRS index, PRS resource index.

[0363] In some embodiments, the indication information includes RRC signaling; or,

[0364] The indication information includes MAC CE; or,

[0365] The indication information includes RRC signaling and DCI.

[0366] In some implementations, the indication information includes RRC signaling and DCI, including:

[0367] RRC signaling configures a path loss offset value set;

[0368] The DCI indicates the path loss offset value corresponding to the uplink information in the path loss offset value set.

[0369] In some implementations, the path loss offset value corresponding to the uplink information in the path loss offset value set indicated by the DCI includes:

[0370] The SRI field or the newly added field in the DCI indicates the path loss offset value corresponding to the uplink information in the path loss offset value set.

[0371] FIG12 is a schematic block diagram of a second network device 1200 according to an embodiment of the present application. As shown in FIG12 , the second network device 1200 includes a second transceiver module 1110, and further includes:

[0372] The second processing module 1220 is configured to send mapping relationship information to the terminal device, where the mapping relationship information indicates a mapping relationship between a state value of the SRI field and a path loss offset value in a path loss offset value set.

[0373] In some embodiments, the second processing module 1220 is further configured to:

[0374] Determine a path loss offset value based on the first path loss and the second path loss; wherein,

[0375] The first path loss includes a path loss between the terminal device and one or more first network devices;

[0376] The second path loss includes the path loss between the terminal device and the second network device.

[0377] The second network device 1100 and the second network device 1200 of the embodiment of the present application can implement the corresponding functions of the second network device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the second network device 1100 and the second network device 1200 can be found in the corresponding description in the above-mentioned method embodiment, which will not be repeated here. It should be noted that the functions described in the various modules (sub-modules, units or components, etc.) in the second network device 1100 and the second network device 1200 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).

[0378] The embodiment of the present application further proposes a first network device. FIG13 is a schematic block diagram of a first network device 1300 according to an embodiment of the present application. The first network device 1300 may include: a third transceiver module 1310, configured to:

[0379] receiving a first SRS;

[0380] The received power of the first SRS is sent to the second network device; or the difference between the transmitted power of the first SRS and the received power of the first SRS is sent to the second network device.

[0381] The first network device 1300 of the embodiment of the present application can implement the corresponding functions of the first network device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to each module (sub-module, unit or component, etc.) in the first network device 1300 can be found in the corresponding description in the above method embodiment, and will not be repeated here. It should be noted that the functions described in the various modules (sub-module, unit or component, etc.) in the first network device 1300 of the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.) or by the same module (sub-module, unit or component, etc.).

[0382] The present application also provides a terminal device. FIG14 is a schematic block diagram of a terminal device 1400 according to an embodiment of the present application. The terminal device 1400 may include:

[0383] The fourth transceiver module 1410 is configured to receive DCI sent by the second network device, where the number of bits of the transmission power control TPC field in the DCI is greater than or equal to 3;

[0384] The third processing module 1420 is configured to adjust the transmit power of uplink information according to the DCI.

[0385] In some implementations, the fourth transceiver module 1410 is further configured to use the adjusted transmit power to send uplink information to the first network device or the second network device.

[0386] In some implementations, the absolute power adjustment value indicated by the TPC field satisfies the following conditions:

[0387] The absolute power adjustment value is positive; or,

[0388] The absolute power adjustment value is greater than or equal to 8dB; or,

[0389] The absolute power adjustment value is negative; or,

[0390] The absolute power adjustment value is less than or equal to -8dB.

[0391] In some implementations, the cumulative power adjustment value indicated by the TPC field satisfies the following conditions:

[0392] The accumulated power adjustment value is negative; or,

[0393] The cumulative power adjustment value is less than or equal to -3dB.

[0394] The terminal device 1400 of the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the terminal device 1400 can be found in the corresponding descriptions in the above-mentioned method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the terminal device 1400 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).

[0395] The present application also provides a second network device. FIG15 is a schematic block diagram of a second network device 1500 according to an embodiment of the present application. The second network device 1500 may include:

[0396] The fifth transceiver module 1510 is used to send DCI to the terminal device, where the number of bits of the transmission power control TPC field in the DCI is greater than or equal to 3; the DCI is used by the terminal device to determine the transmission power of uplink information.

[0397] In some implementations, the absolute power adjustment value indicated by the TPC field satisfies the following conditions:

[0398] The absolute power adjustment value is positive; or,

[0399] The absolute power adjustment value is greater than or equal to 8dB; or,

[0400] The absolute power adjustment value is negative; or,

[0401] The absolute power adjustment value is less than or equal to -8dB.

[0402] In some implementations, the cumulative power adjustment value indicated by the TPC field satisfies the following conditions:

[0403] The accumulated power adjustment value is negative; or,

[0404] The cumulative power adjustment value is less than or equal to -3dB.

[0405] The second network device 1500 of the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the second network device 1500 can be found in the corresponding descriptions in the above-mentioned method embodiments, and will not be repeated here. It should be noted that the functions described in the various modules (sub-modules, units or components, etc.) in the second network device 1500 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).

[0406] Figure 16 is a schematic structural diagram of a communication device 1600 according to an embodiment of the present application. The communication device 1600 includes a processor 1610, which can call and execute a computer program from a memory to enable the communication device 1600 to implement the method in the embodiment of the present application.

[0407] In one embodiment, the communication device 1600 may further include a memory 1620. The processor 1610 may call and execute a computer program from the memory 1620 to enable the communication device 1600 to implement the method in the embodiment of the present application.

[0408] The memory 1620 may be a separate device independent of the processor 1610 , or may be integrated into the processor 1610 .

[0409] In one embodiment, the communication device 1600 may further include a transceiver 1630 , and the processor 1610 may control the transceiver 1630 to communicate with other devices. Specifically, the transceiver 1630 may send information or data to other devices, or receive information or data sent by other devices.

[0410] The transceiver 1630 may include a transmitter and a receiver. The transceiver 1630 may further include an antenna, and the number of antennas may be one or more.

[0411] In one embodiment, the communication device 1600 may be a terminal device according to an embodiment of the present application, and the communication device 1600 may implement the corresponding processes implemented by the terminal device in each method according to the embodiment of the present application. For the sake of brevity, these processes are not described here. The terminal device includes a memory, a processor, and a transceiver. The memory may store programs executed by the terminal device; the processor executes the programs, specifically, the processor may execute the actions performed by the first processing module 1010 or the third processing module 1420; and the transceiver, under the control of the processor, executes the actions performed by the first transceiver module 1020 or the fourth transceiver module 1410.

[0412] In one embodiment, the communication device 1600 may be the first network device of the embodiments of the present application, and the communication device 1600 may implement the corresponding processes implemented by the first network device in each method of the embodiments of the present application. For the sake of brevity, these processes are not described here. The first network device includes a memory, a processor, and a transceiver. The memory may store a program executed by the first network device; the processor executes the program; and the transceiver, under the control of the processor, executes the actions performed by the third transceiver module 1310.

[0413] In one embodiment, the communication device 1600 may be the second network device of the embodiments of the present application, and the communication device 1600 may implement the corresponding processes implemented by the second network device in the various methods of the embodiments of the present application. For the sake of brevity, these processes are not further described here. The second network device includes a memory, a processor, and a transceiver. The memory may store a program executed by the second network device; the processor executes the program, specifically, the processor may execute the actions performed by the second processing module 1220; and the transceiver, under the control of the processor, executes the actions performed by the second transceiver module 1110 or the fifth transceiver module 1510.

[0414] 17 is a schematic structural diagram of a chip 1700 according to an embodiment of the present application. The chip 1700 includes a processor 1710, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0415] In one embodiment, the chip 1700 may further include a memory 1720. The processor 1710 may call and execute a computer program from the memory 1720 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

[0416] The memory 1720 may be a separate device independent of the processor 1710 , or may be integrated into the processor 1710 .

[0417] In one embodiment, the chip 1700 may further include an input interface 1730. The processor 1710 may control the input interface 1730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0418] In one embodiment, the chip 1700 may further include an output interface 1740. The processor 1710 may control the output interface 1740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0419] In one embodiment, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0420] In one embodiment, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0421] The chips used in the network device and the terminal device may be the same chip or different chips.

[0422] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0423] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0424] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0425] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0426] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0427] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0428] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0429] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, comprising: The terminal device determines the path loss between the terminal device and the first network device according to the path loss offset value; The terminal device sends uplink information to the first network device based on the path loss.

2. The method according to claim 1 further includes the terminal device receiving indication information sent by the second network device, wherein the indication information is used to indicate the path loss offset value.

3. The method according to claim 1 or 2, wherein: The path loss offset value is associated with one or more of the following transmission parameters: Type of uplink information; Path loss reference signal index; Sounding reference signal SRS resource indication index; Spatial information.

4. The method according to claim 3, wherein: The spatial information includes at least one of the following: SRS resource collection information; Transmission configuration indication TCI status information; Antenna panel information; Control resource set CORESET group information; Beam information; Reference signal resource information.

5. The method according to claim 3 or 4, wherein: The path loss reference signal index includes one or more of the following: a channel state information reference signal CSI-RS index, a CSI-RS resource index, a synchronization signal block SSB index, an SSB resource index, a positioning reference signal PRS index, and a PRS resource index.

6. The method according to any one of claims 3 to 5, wherein: The first network device is associated with one or more of the transmission parameters.

7. The method according to claim 6, wherein: The terminal device determines, according to the path loss offset value, a path loss between the terminal device and the first network device, including: The terminal device determines a path loss offset value associated with the first network device based on one or more of the transmission parameters associated with the first network device; and determines the path loss between the terminal device and the first network device based on the path loss offset value associated with the first network device.

8. The method according to claim 2, wherein: The indication information includes radio resource control RRC signaling; or, The indication information includes MAC CE; or, The indication information includes RRC signaling and downlink control information DCI.

9. The method according to claim 8, wherein: The indication information includes RRC signaling and downlink control information DCI, including: The RRC signaling configures a path loss offset value set; The DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

10. The method according to claim 9, wherein: The DCI indicates a path loss offset value corresponding to the first network device in the path loss offset value set, including: The resource indication domain SRI field or the newly added field in the DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

11. The method according to claim 9 or 10, further comprising, the terminal device receiving mapping relationship information, the mapping relationship information indicating a mapping relationship between the state value of the SRI field and the path loss offset value in the path loss offset value set; The terminal device determines, according to the path loss offset value, a path loss between the terminal device and the first network device, including: The terminal device determines the path loss offset value corresponding to the first network device according to the RRC signaling, the mapping relationship information and the DCI.

12. The method according to claim 9 or 10, further comprising, the terminal device receiving mapping relationship information, the mapping relationship information indicating a mapping relationship between the state value of the SRI field and the path loss offset value in the path loss offset value set; The terminal device determines, according to the path loss offset value, a path loss between the terminal device and the first network device, including: The terminal device determines a set of path loss offset values ​​applied by the first network device; The terminal device determines the path loss offset value corresponding to the first network device according to the RRC signaling, the mapping relationship information and the DCI.

13. The method according to any one of claims 1 to 12, further comprising: The terminal device sends a first SRS to the first network device at a first power, where the first SRS is used to determine the path loss offset value.

14. The method according to claim 13, wherein: The first power is a predefined power; or, The first power is configured by third information.

15. The method according to claim 14, wherein: The third information is carried by RRC signaling or MAC CE.

16. The method according to claim 14, wherein: The first power is determined by open-loop power control.

17. The method according to any one of claims 1 to 16, further comprising: The terminal device sends a second SRS to the second network device; or, The terminal device sends the path loss between the terminal device and the second network device to the second network device.

18. The method according to any one of claims 1 to 17, wherein: The uplink information includes: at least one of: physical uplink shared channel PUSCH information, physical uplink control channel PUCCH information, SRS information and physical random access channel PRACH information.

19. A communication method, comprising: The second network device sends indication information to the terminal device, where the indication information is used to indicate a path loss offset value, where the path loss offset value is used to determine the path loss between the terminal device and the first network device, where the path loss is used by the terminal device to send uplink information to the first network device.

20. The method according to claim 19, wherein: The path loss offset value is associated with one or more of the following transmission parameters: Type of uplink information; Path loss reference signal index; SRS resource indication index; Spatial information.

21. The method according to claim 20, wherein: The spatial information includes at least one of the following: SRS resource collection information; Transmission configuration indication TCI status information; Antenna panel information; Control resource set CORESET group information; Beam information; Reference signal resource information.

22. The method according to claim 20, wherein: The path loss reference signal index includes one or more of the following: CSI-RS index, CSI-RS resource index, SSB index, SSB resource index, PRS index, and PRS resource index.

23. The method according to any one of claims 20 to 22, wherein: The indication information includes radio resource control RRC signaling; or, The indication information includes MAC CE; or, The indication information includes RRC signaling and downlink control information DCI.

24. The method according to claim 23, wherein: The indication information includes RRC signaling and downlink control information DCI, including: The RRC signaling configures a path loss offset value set; The DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

25. The method according to claim 24, wherein: The DCI indicates a path loss offset value corresponding to the first network device in the path loss offset value set, including: The SRI field or the newly added field in the DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

26. The method according to claim 25, further comprising, The second network device sends mapping relationship information to the terminal device, where the mapping relationship information indicates a mapping relationship between a state value of the SRI field and a path loss offset value in the path loss offset value set.

27. The method according to any one of claims 19 to 26, further comprising: The second network device determines the path loss offset value according to the first path loss and the second path loss; wherein, The first path loss includes a path loss between the terminal device and the one or more first network devices; The second path loss includes a path loss between the terminal device and the second network device.

28. A communication method, comprising: The first network device receives a first SRS; The first network device sends the received power of the first SRS to the second network device; Alternatively, the first network device The difference between the transmission power of the first SRS and the reception power of the first SRS is sent to the second network device.

29. A communication method, comprising: The terminal device receives the DCI sent by the second network device, where the number of bits of the transmission power control TPC field in the DCI is greater than or equal to 3; The terminal device adjusts the transmission power of the uplink information according to the DCI.

30. The method according to claim 29 further includes the terminal device using the adjusted transmission power to send uplink information to the first network device or the second network device.

31. The method according to claim 29 or 30, wherein: The absolute power adjustment value indicated by the TPC field satisfies the following conditions: The absolute power adjustment value is a positive value; or, The absolute power adjustment value is greater than or equal to 8 dB; or, The absolute power adjustment value is a negative value; or, The absolute power adjustment value is less than or equal to -8 dB.

32. The method according to claim 29 or 30, wherein: The cumulative power adjustment value indicated by the TPC field satisfies the following conditions: The accumulated power adjustment value is a negative value; or, The accumulated power adjustment value is less than or equal to -3dB.

33. A communication method, comprising: The second network device sends a DCI to the terminal device, where the number of bits of a transmission power control TPC field in the DCI is greater than or equal to 3; The DCI is used by the terminal device to determine the transmission power of uplink information.

34. The method of claim 33, wherein: The absolute power adjustment value indicated by the TPC field satisfies the following conditions: The absolute power adjustment value is a positive value; or, The absolute power adjustment value is greater than or equal to 8 dB; or, The absolute power adjustment value is a negative value; or, The absolute power adjustment value is less than or equal to -8 dB.

35. The method of claim 33, wherein: The cumulative power adjustment value indicated by the TPC field satisfies the following conditions: The accumulated power adjustment value is a negative value; or, The accumulated power adjustment value is less than or equal to -3dB.

36. A terminal device, comprising: A first processing module determines a path loss between the terminal device and the first network device according to a path loss offset value; The first transceiver module is used to send uplink information to the first network device based on the path loss.

37. According to the terminal device according to claim 36, the first transceiver module is also used to receive indication information sent by the second network device, and the indication information is used to indicate the path loss offset value.

38. The terminal device according to claim 36 or 37, wherein: The path loss offset value is associated with one or more of the following transmission parameters: Type of uplink information; Path loss reference signal index; Sounding reference signal SRS resource indication index; Spatial information.

39. The terminal device according to claim 38, wherein: The spatial information includes at least one of the following: SRS resource collection information; Transmission configuration indication TCI status information; Antenna panel information; Control resource set CORESET group information; Beam information; Reference signal resource information.

40. The terminal device according to claim 38 or 39, wherein: The path loss reference signal index includes one or more of the following: a channel state information reference signal CSI-RS index, a CSI-RS resource index, a synchronization signal block SSB index, an SSB resource index, a positioning reference signal PRS index, and a PRS resource index.

41. The terminal device according to any one of claims 38 to 40, wherein: The first network device is associated with one or more of the transmission parameters.

42. The terminal device according to claim 41, wherein: The first processing module is used to determine a path loss offset value associated with the first network device based on one or more transmission parameters associated with the first network device; and determine the path loss between the terminal device and the first network device based on the path loss offset value associated with the first network device.

43. The terminal device according to claim 37, wherein: The indication information includes radio resource control RRC signaling; or, The indication information includes MAC CE; or, The indication information includes RRC signaling and downlink control information DCI.

44. The terminal device according to claim 43, wherein: The indication information includes RRC signaling and downlink control information DCI, including: The RRC signaling configures a path loss offset value set; The DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

45. The terminal device according to claim 44, wherein: The DCI indicates a path loss offset value corresponding to the first network device in the path loss offset value set, including: The resource indication domain SRI field or the newly added field in the DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

46. ​​The terminal device according to claim 44 or 45, wherein the first transceiver module is further used to receive mapping relationship information, wherein the mapping relationship information indicates a mapping relationship between a state value of the SRI field and a path loss offset value in the path loss offset value set; The first processing module is used to determine a path loss offset value corresponding to the first network device according to the RRC signaling, the mapping relationship information and the DCI.

47. The terminal device according to claim 44 or 45, wherein the first transceiver module is further used to receive mapping relationship information, wherein the mapping relationship information indicates a mapping relationship between a state value of the SRI field and a path loss offset value in the path loss offset value set; The first processing module is used to determine a set of path loss offset values ​​applied by the first network device; the terminal device determines the path loss offset value corresponding to the first network device based on the RRC signaling, the mapping relationship information and the DCI.

48. According to the terminal device according to any one of claims 36-47, the first transceiver module is also used to send a first SRS to the first network device at a first power, and the first SRS is used to determine the path loss offset value.

49. The terminal device according to claim 48, wherein: The first power is a predefined power; or, The first power is configured by third information.

50. The terminal device according to claim 49, wherein: The third information is carried by RRC signaling or MAC CE.

51. The terminal device according to claim 49, wherein: The first power is determined by open-loop power control.

52. According to the terminal device according to any one of claims 36-51, the first transceiver module is further used to send a second SRS to a second network device; or to send a path loss between the terminal device and the second network device to the second network device.

53. The terminal device according to any one of claims 36 to 52, wherein: The uplink information includes: at least one of: physical uplink shared channel PUSCH information, physical uplink control channel PUCCH information, SRS information and physical random access channel PRACH information.

54. A second network device, comprising: The second transceiver module is used to send indication information to the terminal device, wherein the indication information is used to indicate a path loss offset value, and the path loss offset value is used to determine the path loss between the terminal device and the first network device, and the path loss is used by the terminal device to send uplink information to the first network device.

55. The second network device according to claim 54, wherein: The path loss offset value is associated with one or more of the following transmission parameters: Type of uplink information; Path loss reference signal index; SRS resource indication index; Spatial information.

56. The second network device according to claim 55, wherein: The spatial information includes at least one of the following: SRS resource collection information; Transmission configuration indication TCI status information; Antenna panel information; Control resource set CORESET group information; Beam information; Reference signal resource information.

57. The second network device according to claim 55, wherein: The path loss reference signal index includes one or more of the following: CSI-RS index, CSI-RS resource index, SSB index, SSB resource index, PRS index, and PRS resource index.

58. The second network device according to any one of claims 55 to 57, wherein: The indication information includes radio resource control RRC signaling; or, The indication information includes MAC CE; or, The indication information includes RRC signaling and downlink control information DCI.

59. The second network device according to claim 58, wherein: The indication information includes RRC signaling and downlink control information DCI, including: The RRC signaling configures a path loss offset value set; The DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

60. The second network device according to claim 59, wherein: The DCI indicates a path loss offset value corresponding to the first network device in the path loss offset value set, including: The SRI field or the newly added field in the DCI indicates the path loss offset value corresponding to the first network device in the path loss offset value set.

61. The second network device according to claim 59, further comprising: The second processing module is used to send mapping relationship information to the terminal device, where the mapping relationship information indicates a mapping relationship between the state value of the SRI field and the path loss offset value in the path loss offset value set.

62. The second network device according to any one of claims 54 to 61, wherein the second processing module is further configured to: The path loss offset value is determined according to the first path loss and the second path loss; wherein, The first path loss includes a path loss between the terminal device and the one or more first network devices; The second path loss includes a path loss between the terminal device and the second network device.

63. A first network device, comprising: The third transceiver module is used to: receiving a first SRS; Sending the received power of the first SRS to the second network device; Alternatively, a difference between the transmit power of the first SRS and the receive power of the first SRS is sent to the second network device.

64. A terminal device, comprising: a fourth transceiver module, configured to receive a DCI sent by a second network device, wherein the number of bits of a transmission power control TPC field in the DCI is greater than or equal to 3; The third processing module is used to adjust the transmission power of uplink information according to the DCI.

65. According to the terminal device according to claim 64, the fourth transceiver module is also used to use the adjusted transmission power to send uplink information to the first network device or the second network device.

66. The terminal device according to claim 64 or 65, wherein: The absolute power adjustment value indicated by the TPC field satisfies the following conditions: The absolute power adjustment value is a positive value; or, The absolute power adjustment value is greater than or equal to 8 dB; or, The absolute power adjustment value is a negative value; or, The absolute power adjustment value is less than or equal to -8 dB.

67. The terminal device according to claim 64 or 65, wherein: The cumulative power adjustment value indicated by the TPC field satisfies the following conditions: The accumulated power adjustment value is a negative value; or, The accumulated power adjustment value is less than or equal to -3dB.

68. A second network device, comprising: A fifth transceiver module, configured to send a DCI to a terminal device, wherein the number of bits of a transmission power control TPC field in the DCI is greater than or equal to 3; The DCI is used by the terminal device to determine the transmission power of uplink information.

69. The second network device according to claim 68, wherein: The absolute power adjustment value indicated by the TPC field satisfies the following conditions: The absolute power adjustment value is a positive value; or, The absolute power adjustment value is greater than or equal to 8 dB; or, The absolute power adjustment value is a negative value; or, The absolute power adjustment value is less than or equal to -8 dB.

70. The second network device according to claim 68, wherein: The cumulative power adjustment value indicated by the TPC field satisfies the following conditions: The accumulated power adjustment value is a negative value; or, The accumulated power adjustment value is less than or equal to -3dB.

71. A communication device comprising: A processor, a memory and a transceiver, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory and control the transceiver to execute the method as described in any one of claims 1 to 35.

72. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 35.

73. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method according to any one of claims 1 to 35.

74. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 35.

75. A computer program causing a computer to execute the method of any one of claims 1 to 35.

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