Power control method and device, and communication equipment

Abstract

The embodiment of the invention provides a power control method and device, communication equipment, a chip and a computer readable storage medium, and the method comprises the steps that terminal equipment determines second path loss based on first path loss and first path loss offset; the first path loss is the path loss between the terminal equipment and first network equipment, and the second path loss is the path loss between the terminal equipment and second network equipment; and the terminal equipment determines the sending power of the terminal equipment to the second network equipment based on the second path loss.

Description

Power control method and device, and communication equipment Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a power control method and apparatus, and communication equipment. Background Art

[0002] Power control is required for uplink transmissions from terminal devices. One of the key factors in power control is the path loss between the terminal device and network equipment. Some network equipment only has uplink reception capabilities but no downlink transmission capabilities. Terminal devices cannot estimate the path loss between them by measuring the network equipment's downlink reference signal, making uplink power control impossible for these types of network equipment.

[0003] Summary of the Invention

[0004] Embodiments of the present application provide a power control method and apparatus, communication equipment, a chip, a computer-readable storage medium, a computer program product, and a computer program.

[0005] The present invention provides a power control method, which includes:

[0006] The terminal device determines a second path loss based on the first path loss and the first path loss offset; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device;

[0007] The terminal device determines the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the second network device based on the second path loss.

[0008] The present invention provides a power control method, which includes:

[0009] A first network device sends signaling to a terminal device, and the signaling is used to determine a first path loss offset; the first path loss offset and the first path loss are used by the terminal device to determine a second path loss; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device; the second path loss is used by the terminal device to determine the transmission power of the uplink signal and / or uplink channel sent to the second network device.

[0010] An embodiment of the present application provides a power control device, which is applied to a terminal device. The power control device includes:

[0011] A determination unit is used to determine a second path loss based on a first path loss and a first path loss offset; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device; based on the second path loss, determine the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the second network device.

[0012] An embodiment of the present application provides a power control device, applied to a first network device, the power control device including:

[0013] A sending unit, used to send signaling to a terminal device, wherein the signaling is used to determine a first path loss offset; the first path loss offset and the first path loss are used by the terminal device to determine a second path loss; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device; the second path loss is used by the terminal device to determine the transmission power of the uplink signal and / or uplink channel sent to the second network device.

[0014] The communication device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the above-mentioned power control method.

[0015] The chip provided in the embodiment of the present application is used to implement the above-mentioned power control method. The chip includes: a processor, which is used to call and run a computer program from a memory, so that the device equipped with the chip executes the above-mentioned power control method.

[0016] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned power control method.

[0017] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned power control method.

[0018] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned power control method.

[0019] Through the above technical solution, the terminal device can determine the path loss between the terminal device and the second network device (i.e., the second path loss) based on the path loss between the terminal device and the first network device (i.e., the first path loss) and the first path loss offset. In this way, the method for determining the path loss between the terminal device and the second network device is clarified, so that the terminal device can determine the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the second network device based on the path loss between the terminal device and the second network device, thereby realizing power control of the terminal device for the upload transmission of the second network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] FIG1 is a schematic diagram of an application scenario provided by an embodiment of the present application;

[0022] FIG2 is a schematic diagram of the structure of a MAC CE in which the TCI state is activated;

[0023] FIG3 is a flow chart of a power control method according to an embodiment of the present application;

[0024] FIG4 is a schematic diagram of a scenario in which an uplink TRP and a conventional TRP are used in combination according to an embodiment of the present application;

[0025] FIG5 is a first schematic diagram of a terminal device sending an SRS according to an embodiment of the present application;

[0026] FIG6 is a second schematic diagram of a terminal device sending an SRS according to an embodiment of the present application;

[0027] FIG7 is a structural diagram of a MAC CE according to an embodiment of the present application;

[0028] FIG8 is a second structural diagram of a MAC CE provided in an embodiment of the present application;

[0029] FIG9-1 is a third structural diagram of a MAC CE provided in an embodiment of the present application;

[0030] FIG9-2 is a fourth structural diagram of a MAC CE provided in an embodiment of the present application;

[0031] FIG10-1 is a fifth structural diagram of a MAC CE provided in an embodiment of the present application;

[0032] FIG10-2 is a sixth structural diagram of a MAC CE provided in an embodiment of the present application;

[0033] FIG11 is a second flow chart of a power control method according to an embodiment of the present application;

[0034] FIG12 is a third flow chart of a power control method according to an embodiment of the present application;

[0035] FIG13 is a fourth flow chart of a power control method according to an embodiment of the present application;

[0036] FIG14 is a fifth flow chart of a power control method according to an embodiment of the present application;

[0037] FIG15 is a schematic diagram of the first structural composition of a power control device provided in an embodiment of the present application;

[0038] FIG16 is a second schematic diagram of the structure of the power control device provided in an embodiment of the present application;

[0039] FIG17 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0040] FIG18 is a schematic structural diagram of a chip according to an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0043] As shown in Figure 1, the communication system may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0044] It should be understood that the embodiments of the present application are only illustrative of communication systems, but the embodiments of the present application are not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), Beyond 5G (B5G) communication system, 6G communication system or future communication system, etc.

[0045] 1 , the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 (eg, UE) located within the coverage area.

[0046] The network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a gNB in ​​an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, a transmission / reception point (TRP), an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0047] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0048] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0049] FIG1 shows a network device and two terminal devices in some embodiments. Optionally, the wireless communication system may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0050] It should be noted that Figure 1 is merely an example of a system applicable to this application. Of course, the methods described in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein simply describes an association relationship between associated 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 associated objects are in an "or" relationship. It should also 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 relationship. For example, "A indicates B" can mean that A directly indicates B, for example, B can obtain information through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain information through C; or it can mean that A and B have an association relationship. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct or indirect correspondence between two objects, or that there is an association relationship between the two objects, or a relationship between an indicator and the indicated, a configuration and the configured, and so on. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit its specific implementation method. For example, predefined can refer to a definition in a protocol. It should also be understood that in the embodiments of the present application, the “protocol” can refer to a standard protocol in the field of communications, such as an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0051] 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.

[0052] 1. Multi Transmission / Reception Point (mTRP) transmission

[0053] mTRP transmission (or MTRP transmission) means that multiple TRPs can communicate with terminal devices simultaneously on the same component carrier (CC).

[0054] In the enhancement of mTRP transmission in R16, multiple mTRP transmission methods are developed. Specifically, they can be implemented in two different scheduling methods.

[0055] Method 1: mTRP transmission method based on single downlink control information (Downlink Control Information, DCI) (abbreviated as sDCI-mTRP)

[0056] Taking two TRPs transmitting to a terminal device as an example, the network (NW) uses a DCI to schedule the transmission corresponding to TRP1 and the transmission corresponding to TRP2. It should be understood that the DCI can come from one of the two TRPs.

[0057] Method 2: mTRP transmission method based on multiple DCIs (abbreviated as mDCI-mTRP).

[0058] Taking two TRPs transmitting to a terminal device as an example, the NW uses two DCIs to schedule the transmission corresponding to TRP1 and the transmission corresponding to TRP2, respectively, such as scheduling the transmission corresponding to TRP1 through DCI1 and scheduling the transmission corresponding to TRP2 through DCI2. It should be understood that in the second method, each TRP independently schedules the transmission of the TRP by sending DCI.

[0059] In order to enhance uplink coverage, a special type of network equipment is introduced into the communication system. This type of network equipment only has the ability to receive uplink transmissions, that is, this type of network equipment does not support downlink transmissions. This type of network equipment can be called an uplink-only TRP (UL-only TRP), or an uplink TRP. It can be understood that for FDD systems, UL-only TRP can only realize the receiving capability of the uplink spectrum in FDD, and does not require the sending capability of the downlink spectrum, thereby reducing manufacturing costs. In this case, NW can deploy more UL-only TRPs to reduce the distance between the terminal device and the TRP, thereby enhancing the uplink coverage capability without increasing the complexity of the terminal device.

[0060] It should be clear that UL-only TRP does not support downlink transmission, and naturally does not support the transmission of downlink reference signals; UL-only TRP only supports the reception of uplink transmission, such as supporting the reception of uplink channels and / or uplink signals.

[0061] 2. Transmission Configuration Indication (TCI) state

[0062] When receiving signals, terminal devices can improve reception performance by leveraging the characteristics of the transmission environment to improve the reception algorithm. For example, the statistical characteristics of the channel can be used to optimize the design and parameters of the channel estimator. In NR systems, these characteristics of data transmission are represented by Quasi-Co-Location (QCL) information (QCL-Info).

[0063] A TCI state may include: a TCI state identifier (ID), QCL information 1, and QCL information 2. QCL information 2 is optional. In addition, a QCL information may include: a QCL type configuration and a QCL reference signal configuration. The QCL type configuration may be one of QCL type A (typeA), QCL typeB, QCL typeC, or QCL typeD. The reference signal configuration may be a cell ID, a bandwidth part (BWP) ID, and a reference signal identifier, such as a channel state information reference signal (CSI-RS) resource ID or a synchronization signal block (SSB) index.

[0064] The definitions of different QCL types are as follows: QCL typeA is used to configure the following: {Doppler shift, Doppler spread, average delay, delay spread}; QCL typeB is used to configure {Doppler shift, Doppler spread}; QCL typeC is used to configure {Doppler shift, average delay}; and QCL typeD is used to configure {Spatial Rx parameter}.

[0065] The network device may indicate a corresponding TCI status for a downlink signal or a downlink channel.

[0066] If the network device configures the QCL reference signal of the downlink signal or downlink channel as SSB 1 or CSI-RS 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 downlink signal or target downlink channel are the same or similar to the SSB 1 or CSI-RS 1 resource, which is determined by the QCL type configuration.

[0067] If the network device configures the QCL reference signal of the downlink signal or downlink channel as SSB 2 or CSI-RS 2 resource through TCI state, and the QCL type is configured as typeD, the terminal device can use the same spatial reception parameter (ie, Spatial Rx parameter) as that for receiving SSB 2 or CSI-RS 2 resources to receive the downlink signal or downlink channel. Typically, the downlink signal or downlink channel and the SSB2 or CSI-RS 2 resource are sent by the same TRP or the same antenna panel (panel) or the same beam on the network device side. It should be understood that if the transmission TRP or transmission panel or transmission beam of two downlink signals (or downlink channels) is different, the network device will usually indicate different TCI states for the two downlink signals (or downlink channels).

[0068] Downlink channels include a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0069] For PDCCH, the TCI status may be indicated through Radio Resource Control (RRC) signaling or RRC signaling plus Medium Access Control (MAC) signaling.

[0070] For PDSCH, the TCI state set is indicated by RRC signaling, and some TCI states in the TCI state set are activated by MAC layer signaling. Finally, one or two TCI states are indicated from the activated TCI states through the TCI state indication field in the DCI for the PDSCH scheduled by the DCI.

[0071] 3. Unified TCI state

[0072] The aforementioned TCI states only apply to downlink channels and signals and have numerous limitations in NR systems. To provide a more unified uplink and downlink beam management mechanism for NR systems, the 3rd Generation Partnership Project (3GPP) has proposed the concept of a unified TCI state based on the aforementioned technologies. Specifically, the unified TCI state design includes two modes.

[0073] Mode 1: Contains one type of TCI state, which can be applied to both uplink and downlink channels and signals; this type of TCI state is usually called a joint TCI state.

[0074] Mode 2: Includes two types of TCI states: downlink TCI state (DL TCI state) and uplink TCI state (UL TCI state). The DL TCI state applies only to downlink channels and signals, while the UL TCI state applies only to uplink channels and signals. This type of TCI state is called a separate TCI state. The network can configure only one type of TCI state, such as only the downlink TCI state or only the uplink TCI state. The network can also configure both types of TCI states simultaneously, such as configuring both the downlink TCI state and the uplink TCI state.

[0075] It should be understood that downlink channels (such as PDCCH, PDSCH) and downlink signals (such as non-periodic CSI-RS) can use the same downlink transmit beam indication, for example, using DL TCI state or joint TCI state to indicate the downlink transmit beam.

[0076] Uplink channels (such as physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH)) and uplink signals (such as sounding reference signal (SRS)) can use the same uplink transmit beam indication, for example, using UL TCI state or joint TCI state to indicate the uplink transmit beam.

[0077] It should be noted that the unified TCI state is applicable to the scenario of carrier aggregation, and the TCI state configuration and / or indication on a single CC can be applicable to multiple different CCs.

[0078] As the name of the unified TCI state suggests, the "unification" here has multiple meanings. The first layer of "unification" means that it unifies the uplink and downlink beam indication mechanisms. This is because in the Release 15 / R16 NR standards, the TCI state is only used for downlink beam indication, and uplink beam indication uses signaling based on spatial relation information (Spatial Relation Information). The second layer of "unification" means that the beams between different channels are unified. For example, under the configuration of the DL / UL TCI state, the terminal device considers the downlink PDCCH (UE-specific) and PDSCH (UE-specific) to be unified into the same beam for transmission; in addition, the terminal device uses the same beam for uplink PUCCH and PUSCH. Under the configuration of the Joint TCI state, the terminal device believes that different channels and signals in the uplink and downlink can have good beam symmetry, that is, symmetric beam pairs are used for communication in the uplink and downlink.

[0079] It should be noted that the "TCI status" described below, unless otherwise specified, refers to the unified TCI status.

[0080] R18 supports the indication of a unified TCI state for mTRP. The unified TCI state can be indicated using one or more of the following signaling: RRC signaling, MAC Control Element (MAC CE), and DCI. The TCI state indicated by signaling can be called the "indicated TCI state". The ways in which the NW indicates the TCI state through signaling include:

[0081] Method 1: The NW configures N1 TCI states through RRC signaling. The value of N1 depends on the NW implementation. For example, 1≤N1≤2. These N1 TCI states are all "indicated TCI states."

[0082] Method 2: The NW configures N2 TCI states through RRC signaling. The value of N2 depends on the NW implementation. For example, 1≤N2≤128, and activates M1 TCI states among the N2 TCI states through MAC CE. The value of M1 depends on the NW implementation. For example, 1≤M1≤2. These M1 TCI states are all "indicated TCI states".

[0083] Method 3: The NW configures N2 TCI states through RRC signaling. The value of N2 depends on the NW implementation. For example, 1≤N2≤128, and activates M2 TCI states among the N2 TCI states through MAC CE. The value of M2 depends on the NW implementation. For example, 1≤M2≤8. Finally, the TCI state indication field in the DCI indicates K TCI states from the activated M2 TCI states. The value of K depends on the NW implementation. For example, 1≤K≤2. These K TCI states are all "indicated TCI states".

[0084] It should be noted that in the mTRP system, different indicated TCI states correspond to different TRPs. For example, NW indicates two TCI states in the above manner. It can be understood that these two TCI states are both "indicated TCI states", respectively referred to as the first indicated TCI state and the second indicated TCI state, wherein the first indicated TCI state corresponds to the first TRP, and the second indicated TCI state corresponds to the second TRP. The indicated TCI state corresponding to the TRP is used for the downlink transmission and / or uplink transmission of the TRP. For example, the indicated TCI state corresponding to the TRP is DL TCI state or joint TCI state, and the indicated TCI state is used for the downlink transmission of the TRP; for example, the indicated TCI state corresponding to the TRP is UL TCI state or joint TCI state, and the indicated TCI state is used for the uplink transmission of the TRP.

[0085] For configuring the TCI state through RRC signaling, the content carried by the RRC signaling can refer to the following Table 1:

[0086] Table 1

[0087] As shown in Table 1, Table 1 provides DLorJoint-TCIState-r17 (i.e., DL TCI state or joint TCI state configuration) and UL-TCIState-r17 (i.e., UL TCI state configuration). DLorJoint-TCIState-r17 includes: tci-StateUnifiedId-r17 (i.e., TCI state identifier), qcl-Type1-r17 (i.e., QCL type 1 configuration), qcl-Type2-r17 (i.e., QCL type 2 configuration), ul-powerControl-r17 (i.e., uplink power control configuration), and pathlossReferenceRS-Id-r17 (i.e., path loss reference signal configuration). UL-TCIState-r17 includes: ul-TCIState-Id (TCI state identifier), servingCellId-r17 (serving cell identifier), referenceSignal-r17 (reference signal configuration), ul-powerControl-r17 (uplink power control configuration), and pathlossReferenceRS-Id-r17 (path loss reference signal configuration).

[0088] For the DL TCI state or joint TCI state, the QCL type configuration can be one of QCL type-A, QCL type B, QCL type C and QCL type D. The definitions of different QCL types can refer to the above related descriptions.

[0089] For the UL TCI state, the QCL type configuration can only be QCL type D, and cannot be QCL type-A, QCL type B, or QCL type C.

[0090] In addition, when configuring the TCI state through RRC signaling, the parameter unifiedTCI-StateType-r17 can also be used to distinguish whether the configured TCI state is a joint TCI state or a separate TCI state.

[0091] For activating the TCI state through a MAC CE, the structure of the MAC CE can be referred to in Figure 2 and includes the following fields:

[0092] Serving Cell ID field: This field indicates the ID of the serving cell to which the MAC CE applies.

[0093] Downlink BWP ID (DL BWP ID) field: This field indicates the ID of the downlink BWP to which the MAC CE applies.

[0094] Uplink BWP ID (UL BWP ID) field: This field indicates the ID of the uplink BWP to which the MAC CE applies.

[0095] Pi field (1≤i≤8): This field indicates whether each TCI code point contains multiple TCI states or a single TCI state; if this field is set to 1, this field indicates that the i-th TCI code point contains DL TCI state and UL TCI state; if this field is set to 0, this field indicates that the i-th TCI code point contains only DL / joint TCI state TCI state or UL TCI state; the TCI code point corresponding to the TCI state is determined based on the sorting position of the TCI state in all TCI state identification fields.

[0096] D / U field: This field indicates whether the TCI status identifier in the same byte corresponds to the DL / joint TCI state or the UL TCI state; if this field is set to 1, this field indicates that the TCI status identifier in the same byte is used to indicate the DL / joint TCI state; if this field is set to 0, this field indicates that the TCI status identifier in the same byte is used to indicate the UL TCI state.

[0097] TCI state ID field: This field indicates the TCI state. If the D / U field is set to 1, all 7 bits of this field are used to indicate the DL / joint TCI state. If the D / U field is set to 0, all 6 bits of this field are used to indicate the UL TCI state.

[0098] R field: This field is a reserved field (ie, reserved bits), and the bits in this field are set to 0.

[0099] For indicating the TCI state through DCI, the NW can use the TCI state indication field in DCI format 1_1 / 1_2 to indicate the TCI state. One state of the TCI state indication field corresponds to one code point, which is used to indicate a TCI state activated by the MAC CE. For example, the state of the TCI state indication field is "000", which corresponds to one code point, which corresponds to TCI state ID1 activated by the MAC CE, and is used to indicate the TCI state corresponding to TCI state ID 1; the state of the TCI state indication field is "111", which corresponds to another code point, which corresponds to TCI state ID 8 activated by the MAC CE, and is used to indicate the TCI state corresponding to TCI state ID 8.

[0100] 4. Uplink power control

[0101] Uplink power control refers to power control of uplink signals or uplink channels. Uplink signals or uplink channels include: PUSCH, PUCCH, SRS, and Physical Random Access Channel (PRACH).

[0102] 1) PUSCH power control

[0103] The PUSCH power control mechanism consists of open-loop power control and closed-loop power control. Open-loop power control parameters are configured or reconfigured by network equipment through RRC signaling, and are a slow and semi-static power adjustment method. Closed-loop power control allows for rapid power adjustment via physical layer signaling (e.g., DCI).

[0104] The transmit power of PUSCH is calculated using the following formula (1):

[0105] in:

[0106] b: stands for BWP;

[0107] f: represents carrier;

[0108] c: represents the serving cell;

[0109] i: represents the transmission opportunity;

[0110] j: represents the parameter configuration index;

[0111] q d : represents the index of the reference signal used for path loss measurement;

[0112] l: index representing the closed-loop power control adjustment state;

[0113] μ: represents the subcarrier spacing factor;

[0114] The open-loop power control parameters in the above formula (1) include:

[0115] P O_PUSCH,b,f,c (j): represents the target received power of PUSCH;

[0116] α b,f,c (j): represents the compensation factor of path loss;

[0117] PL b,f,c (q d ): represents the path loss, which is measured according to the reference signal used for path loss measurement;

[0118] The closed-loop power control parameters in the above formula (1) include:

[0119] f b,f,c (i, l): represents the closed-loop power control adjustment state, including the cumulative closed-loop power control state and the absolute closed-loop power control state;

[0120] Other power control parameters in the above formula (1) include:

[0121] P CMAX,f,c (i) represents the maximum transmit power of the terminal device on carrier f in serving cell c;

[0122] Represents the transmission bandwidth of PUSCH, expressed by the number of RBs;

[0123] Δ TF,b,f,c (i): represents the power compensation factor related to the bit rate.

[0124] It should be noted that if the DCI includes an SRS Resource Indication (SRI) field, and NR supports the mapping relationship between the open-loop power parameters, closed-loop power parameters and the SRI field in the DCI through RRC signaling, then the open-loop power parameters and closed-loop power parameters can be indicated by the status of the SRI field in the DCI.

[0125] It should be noted that PL b,f,c (q d ) represents the path loss which can be determined by the following formula:

[0126] PL b,f,c (q d )=referenceSignalPower-higher layer filtered RSRP.

[0127] Where "higher layer filtered RSRP" is the Reference Signal Receiving Power (RSRP) of the higher layer filter. RSRP is measured by the terminal device for the downlink reference signal. The higher layer parameter referenceSignalPower is determined as follows:

[0128] If the terminal device is not configured to periodically receive CSI-RS, referenceSignalPower is determined based on ss-PBCH-BlockPower, where ss-PBCH-BlockPower is the SSB transmission power;

[0129] If the terminal device is configured to periodically receive CSI-RS, referenceSignalPower is determined based on ss-PBCH-BlockPower, or based on ss-PBCH-BlockPower and powerControlOffsetSS, where powerControlOffsetSS is the power offset of the CSI-RS transmission power relative to the SSB transmission power.

[0130] It should be noted that referenceSignalPower can be understood as the transmit power of the downlink reference signal sent by the network device. Higher-layer filtered RSRP can be understood as the receive power of the downlink reference signal sent by the network device received by the terminal device. The difference between referenceSignalPower and higher-layer filtered RSRP represents the path loss between the terminal device and the network device.

[0131] 2) PUCCH power control

[0132] Similar to PUSCH, the power control mechanism of PUCCH also includes open-loop power control and closed-loop power control.

[0133] The transmit power of PUCCH is calculated by the following formula (2):

[0134] in:

[0135] b: stands for BWP;

[0136] f: represents carrier;

[0137] c: represents the serving cell;

[0138] i: represents the transmission opportunity;

[0139] q d : represents the index of the reference signal used for path loss measurement;

[0140] l: index representing the closed-loop power control adjustment state;

[0141] μ: represents the subcarrier spacing factor;

[0142] q u : represents the parameter P O_PUCCH,b,f,c (q u )

[0143] The open-loop power control parameters in the above formula (2) include:

[0144] P O_PUCCH,b,f,c (q u ):represents the target received power of PUCCH;

[0145] PL b,f,c (q d ): represents the path loss, which is measured according to the reference signal used for path loss measurement; the value of the compensation factor of the PUCCH path loss is 1;

[0146] The closed-loop power control parameters in the above formula (2) include:

[0147] g b,f,c (i,l): represents the adjustment status of PUCCH closed-loop power control.

[0148] Other power control parameters in the above formula (2) include:

[0149] P CMAX,f,c (i) represents the maximum transmit power of the terminal device on carrier f in serving cell c;

[0150] Represents the transmission bandwidth of PUCCH, expressed by the number of RBs;

[0151] Δ TF,b,f,c (i): represents the power compensation factor related to the bit rate;

[0152] Δ F_PUCCH (F): represents the PUCCH power adjustment value related to the PUCCH format.

[0153] It should be noted that if the terminal device is configured with spatial relationship information (such as beam information), the open-loop power control parameters and closed-loop power control parameters of PUCCH can be determined based on the mapping relationship between the spatial relationship information configured by RRC signaling and the power control parameters, and the corresponding open-loop power control parameters and closed-loop power control parameters can be determined through the spatial relationship information.

[0154] 3) SRS power control

[0155] Similar to PUSCH and PUCCH, the power control mechanism of SRS also includes open-loop power control and closed-loop power control.

[0156] The SRS transmission power is calculated using the following formula (3):

[0157] in:

[0158] b: stands for BWP;

[0159] f: represents carrier;

[0160] c: represents the serving cell;

[0161] i: represents the transmission opportunity;

[0162] q d : represents the index of the reference signal used for path loss measurement;

[0163] l: index representing the closed-loop power control adjustment state;

[0164] μ: represents the subcarrier spacing factor;

[0165] q s : represents the index of the SRS resource set;

[0166] The open-loop power control parameters in the above formula (3) include:

[0167] P O_SRS,b,f,c (q s ):represents the target received power of SRS;

[0168] α SRS,b,f,c (q s ): represents the compensation factor of path loss;

[0169] PL b,f,c (q d ): represents the path loss, which is measured according to the reference signal used for path loss measurement;

[0170] The closed-loop power control parameters in the above formula (3) include:

[0171] h b,f,c (i,l): represents the adjustment status of SRS closed-loop power control.

[0172] Other power control parameters in the above formula (3) include:

[0173] P CMAX,f,c (i) represents the maximum transmit power of the terminal device on carrier f in serving cell c;

[0174] M SRS,b,f,c (i): represents the transmission bandwidth of SRS, expressed by the number of RBs.

[0175] It should be noted that the power control of the SRS is performed based on the SRS resource set, and the SRS resources in an SRS resource set use the same power control parameters.

[0176] Open-loop power control parameter P O_SRS,b,f,c (q s ) and α SRS,b,f,c (q s) and the SRS resource set index used to calculate the path loss PL b,f,c (q d )'s reference signal indices are all based on resource set configuration and are configured by RRC signaling.

[0177] Closed-loop power control parameter h b，f,c (i, l) can be indicated by RRC signaling to use the same closed-loop power adjustment state as the PUSCH associated with the nearest time domain, or to use an independent closed-loop power control adjustment state.

[0178] 4)PRACH power control

[0179] The transmit power of PRACH is calculated using the following formula (4):

[0180] in:

[0181] b: stands for BWP;

[0182] f: represents carrier;

[0183] c: represents the serving cell;

[0184] i: represents the transmission opportunity;

[0185] P PRACH,target,f,c : Represents the target received power of PRACH, provided by the higher-layer parameter PREAMBLE_RECEIVED_TARGET_POWER;

[0186] PL b,f,c : represents path loss;

[0187] P CMAX,f,c (i): represents the maximum transmit power of the terminal device on carrier f of the serving cell c.

[0188] It should be noted that the above formulas (1) to (4) can all be called power control formulas.

[0189] DCI format 2_2 can be used to perform power control on PUCCH and PUSCH. DCI format 2_2 uses a special Radio Network Temporary Identity (RNTI) for scrambling, namely TPC-PUSCH-RNTI or TPC-PUCCH-RNTI. DCI format 2_2 scrambled with TPC-PUSCH-RNTI can perform power control on PUSCH, and DCI format 2_2 scrambled with TPC-PUCCH-RNTI can perform power control on PUCCH. The content transmitted in DCI format 2_2 is as follows:

[0190] Block number (block number) 1, block number 2,…, block number n.

[0191] The parameter tpc-PUSCH determines the serving cell uplink block number corresponding to the PUSCH, and the parameter tpc-PUCCH determines the serving cell uplink block number corresponding to the PUCCH. Each block number contains the following information: a closed-loop indicator (0 or 1 bit) and a Transmit Power Control (TPC) command (2 bits). The TPC command indicates the power adjustment amount, and the 2 bits of the TPC command can correspond to four values: {-1dB, 0dB, 1dB, 3dB}.

[0192] In the uplink power control mechanism, obtaining the path loss between the terminal device and the network device is a key factor in uplink power control. However, for some special types of network devices, such as uplink TRP, because these network devices do not have any downlink transmission and naturally have no downlink reference signal, the terminal device cannot estimate the path loss between the terminal device and the network device by measuring the downlink reference signal. Therefore, the path loss part of the power control formula cannot be calculated, resulting in the terminal device being unable to perform uplink power control for this type of network device. To this end, the following technical solutions are proposed in the embodiments of the present application.

[0193] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0194] It should be noted that the network device in the embodiment of the present application can be a TRP, and TRP can also be described in other ways, such as access point, transmission point, base station, etc.

[0195] It should be noted that the path loss reference signal (PL RS) in the embodiment of the present application refers to a downlink reference signal used for path loss measurement, such as SSB and CSI-RS.

[0196] FIG3 is a flow chart of a power control method according to an embodiment of the present application. As shown in FIG3 , the power control method includes at least part of the following:

[0197] Step 301: The terminal device determines a second path loss based on the first path loss and the first path loss offset; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device.

[0198] In the embodiment of the present application, the first network device supports downlink transmission. In some implementations, the first network device transmits a PL RS, and the terminal device measures the PL RS to obtain a path loss between the terminal device and the first network device, i.e., a first path loss. The first path loss is equal to the transmit power of the PL RS transmitted by the first network device minus the receive power of the PL RS transmitted by the terminal device.

[0199] In some embodiments, the first network device is a regular TRP (Regular TRP), which may also be referred to as an uplink and downlink TRP. The regular TRP supports uplink and downlink transmissions. The terminal device may send uplink signals and / or uplink channels to the regular TRP, and the terminal device may also receive downlink signals and / or downlink channels sent by the regular TRP, for example, the terminal device receives a PL RS sent by the regular TRP.

[0200] In some other embodiments, the first network device is a downlink transmission-only TRP (DL-only TRP), which may also be referred to as a downlink TRP. The downlink TRP only supports downlink transmission, and the terminal device can receive downlink signals and / or downlink channels sent by the downlink TRP, for example, the terminal device receives a PL RS sent by the downlink TRP.

[0201] In the embodiment of the present application, the second network device supports uplink transmission. Optionally, the second network device does not support downlink transmission.

[0202] In some embodiments, the second network device is an uplink-only TRP (UL-only TRP), which may also be referred to as an uplink TRP. The uplink TRP only supports uplink transmission. The terminal device can send uplink signals and / or uplink channels to the uplink TRP, but cannot receive downlink signals and / or downlink channels sent by the uplink TRP. For example, the terminal device cannot receive PL RS sent by the uplink TRP.

[0203] Since the terminal device cannot estimate the path loss between the terminal device and the second network device by receiving the PL RS sent by the second network device, a mechanism is needed to determine the path loss between the terminal device and the second network device. To this end, the solution of the embodiment of the present application introduces the concept of "path loss offset". The path loss offset refers to the offset of one path loss relative to another path loss. Another path loss can be determined by the path loss offset and one path loss. In the embodiment of the present application, the first path loss offset is the offset of the path loss between the terminal device and the second network device relative to the path loss between the terminal device and the first network device. The terminal device determines the path loss between the terminal device and the second network device (i.e., the second path loss) based on the path loss between the terminal device and the first network device (i.e., the first path loss) and the first path loss offset. For example, the path loss between the terminal device and the first network device is 60dB, and the first path loss offset is -20dB. Then, the path loss between the terminal device and the second network device is 60dB+(-20dB)=40dB.

[0204] In one example, the first network device is a conventional TRP, and the second network device is an uplink TRP. Figure 4 is a schematic diagram of a scenario in which the uplink TRP and the conventional TRP are used in combination. The conventional TRP sends an RL RS, and the terminal device measures the RL RS to obtain the received power of the RL RS. The path loss between the terminal device and the conventional TRP (i.e., the first path loss) can be obtained by subtracting the received power of the RL RS from the transmitted power of the RL RS. The terminal device adds the first path loss offset to the first path loss to obtain the path loss between the terminal device and the uplink TRP (i.e., the second path loss). For uplink transmission from the terminal device to the conventional TRP, the terminal device uses the first path loss as the path loss in the power control formula to calculate the transmit power of the uplink signal or the uplink channel. For uplink transmission from the terminal device to the uplink TRP, the terminal device uses the second path loss as the path loss in the power control formula to calculate the transmit power of the uplink signal or the uplink channel.

[0205] In this embodiment of the present application, the determination of the second path loss is related to the first path loss and the first path loss offset. Regarding how the first path loss is obtained, reference can be made to the aforementioned description, i.e., the first path loss can be obtained by measuring the PL RS sent by the terminal device to the first network device. The following describes how the first path loss offset is obtained.

[0206] Option 1

[0207] In some embodiments, the terminal device sends an uplink reference signal to the first network device and the second network device; the first network device and the second network device receive the uplink reference signal sent by the terminal device; the first path loss offset is determined based on the first received power and the second received power, the first received power being the received power corresponding to the uplink reference signal received by the first network device, and the second received power being the received power corresponding to the uplink reference signal received by the second network device.

[0208] In some implementations, the uplink reference signal may be an SRS.

[0209] In one example, as shown in Figure 5, in a low frequency band (such as Frequency Range 1 (FR1)), the terminal device can use a wider beam to simultaneously send the SRS to the uplink TRP and the normal TRP. The uplink TRP and the normal TRP measure the received power of the SRS respectively. The received power of the SRS measured by the uplink TRP is recorded as SRS_RSRP#1, and the received power of the SRS measured by the normal TRP is recorded as SRS_RSRP#2. The formula for the NW to calculate the first path loss offset is: SRS_RSRP#2-SRS_RSRP#1.

[0210] Option 2

[0211] In some embodiments, a terminal device transmits a first uplink reference signal to a first network device and a second uplink reference signal to a second network device; the first network device receives the first uplink reference signal transmitted by the terminal device, and the second network device receives the second uplink reference signal transmitted by the terminal device; a first path loss offset is determined based on a first received power and a second received power, where the first received power is the received power corresponding to the first uplink reference signal being received by the first network device, and the second received power is the received power corresponding to the second uplink reference signal being received by the second network device. Here, the transmit power of the second uplink reference signal is the same as the transmit power of the first uplink reference signal.

[0212] In some implementations, the uplink reference signal may be an SRS.

[0213] In some embodiments, the terminal device uses a first spatial filter (corresponding to a first beam) to send a first uplink reference signal, and uses a second spatial filter (corresponding to a second beam) to send a second uplink reference signal, wherein the first spatial filter is determined based on the indicated TCI state corresponding to the first network device, and the second spatial filter is determined based on the indicated TCI state corresponding to the second network device. Here, the definition of the indicated TCI state can refer to the aforementioned related description. For ease of distinction, the indicated TCI state corresponding to the first network device can be referred to as the first indicated TCI state, and the indicated TCI state corresponding to the second network device can be referred to as the second indicated TCI state. The type of the first indicated TCI state is UL TCI state or joint TCI state, which is used for the terminal device to send the first uplink reference signal to the first network device. The type of the second indicated TCI state is also UL TCI state or joint TCI state, which is used for the terminal device to send the second uplink reference signal to the second network device.

[0214] In some descriptions, "the terminal device uses a first spatial filter (corresponding to a first beam) to send a first uplink reference signal, and uses a second spatial filter (corresponding to a second beam) to send a second uplink reference signal" can also be described as, "the terminal device uses a first indicated TCI state to send a first uplink reference signal, and uses a second indicated TCI state to send a second uplink reference signal."

[0215] In some descriptions, "the terminal device sends a first uplink reference signal" can also be described as "the terminal device sends a first uplink reference signal resource", and "the terminal device sends a second uplink reference signal" can also be described as "the terminal device sends a second uplink reference signal resource".

[0216] In one example, as shown in Figure 6, in a high frequency band (such as FR2), the terminal device uses the first indicated TCI state to send SRS#1 and uses the second indicated TCI state to send SRS#2. The first indicated TCI state corresponds to the uplink TRP, and the second indicated TCI state corresponds to the conventional TRP. The uplink TRP measures the received power of SRS#1, and the measured received power of SRS#1 is recorded as SRS_RSRP#1; the conventional TRP measures the received power of SRS#2, and the measured received power of SRS#2 is recorded as SRS_RSRP#2. Assuming that the transmit power of SRS#1 is P_SRS1 and the transmit power of SRS#2 is P_SRS2, the formula for NW to calculate the first path loss offset is:

[0217] (P_SRS1-SRS_RSRP#1)-(P_SRS2-SRS_RSRP#2);

[0218] If P_SRS1=P_SRS2, then the calculation formula of the first path loss offset reverts to the same as the above-mentioned solution 1, that is, SRS_RSRP#2-SRS_RSRP#1.

[0219] Option 3

[0220] In some embodiments, a terminal device sends a first uplink reference signal to a first network device and sends a second uplink reference signal to a second network device; the first network device receives the first uplink reference signal sent by the terminal device, and the second network device receives the second uplink reference signal sent by the terminal device; the first path loss offset is determined based on a first transmit power, a second transmit power, a first receive power, and a second receive power, wherein the first transmit power is the transmit power of the first uplink reference signal, the second transmit power is the transmit power of the second uplink reference signal, the first receive power is the receive power corresponding to the first uplink reference signal received by the first network device, and the second receive power is the receive power corresponding to the second uplink reference signal received by the second network device. Here, the transmit power of the second uplink reference signal is determined based on the transmit power of the first uplink reference signal and the first power offset. In some embodiments, the first power offset is predefined or network configured.

[0221] In some implementations, the uplink reference signal may be an SRS.

[0222] In some embodiments, the terminal device uses a first spatial filter (corresponding to a first beam) to send a first uplink reference signal, and uses a second spatial filter (corresponding to a second beam) to send a second uplink reference signal, wherein the first spatial filter is determined based on the indicated TCI state corresponding to the first network device, and the second spatial filter is determined based on the indicated TCI state corresponding to the second network device. Here, the definition of the indicated TCI state can refer to the aforementioned related description. For ease of distinction, the indicated TCI state corresponding to the first network device can be referred to as the first indicated TCI state, and the indicated TCI state corresponding to the second network device can be referred to as the second indicated TCI state. The type of the first indicated TCI state is UL TCI state or joint TCI state, which is used for the terminal device to send the first uplink reference signal to the first network device. The type of the second indicated TCI state is also UL TCI state or joint TCI state, which is used for the terminal device to send the second uplink reference signal to the second network device.

[0223] In some descriptions, "the terminal device uses a first spatial filter (corresponding to a first beam) to send a first uplink reference signal, and uses a second spatial filter (corresponding to a second beam) to send a second uplink reference signal" can also be described as, "the terminal device uses a first indicated TCI state to send a first uplink reference signal, and uses a second indicated TCI state to send a second uplink reference signal."

[0224] In some descriptions, "the terminal device sends a first uplink reference signal" can also be described as "the terminal device sends a first uplink reference signal resource", and "the terminal device sends a second uplink reference signal" can also be described as "the terminal device sends a second uplink reference signal resource".

[0225] In one example, as shown in Figure 6, in a high frequency band (such as FR2), the terminal device uses the first indicated TCI state to send SRS#1 and uses the second indicated TCI state to send SRS#2. The first indicated TCI state corresponds to the uplink TRP, and the second indicated TCI state corresponds to the conventional TRP. The uplink TRP measures the received power of SRS#1, and the measured received power of SRS#1 is recorded as SRS_RSRP#1; the conventional TRP measures the received power of SRS#2, and the measured received power of SRS#2 is recorded as SRS_RSRP#2. Assuming that the transmit power of SRS#1 is P_SRS1 and the transmit power of SRS#2 is P_SRS2, the formula for NW to calculate the first path loss offset is:

[0226] (P_SRS1-SRS_RSRP#1)-(P_SRS2-SRS_RSRP#2);

[0227] If P_SRS1=P_SRS2+P_offset, then the calculation formula of the first path loss offset is simplified to: SRS_RSRP#2-SRS_RSRP#1+P_offset. Here, P_offset represents the first power offset, which can be predefined or configured by the network through signaling (such as RRC signaling).

[0228] In some embodiments, the value of the first power offset may be negative, so that the first path loss offset will be smaller, and the transmission power of the uplink signal or uplink channel determined according to the uplink power control formula will be smaller. When the terminal device is close to the first network device, the interference of the uplink signal and / or uplink channel to other signals can be avoided by reducing the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the first network device.

[0229] Through any one of the above-mentioned solutions one to three, the NW can measure the uplink reference signal sent by the terminal device to determine the first power offset, and subsequently the NW can configure and / or indicate the first power offset to the terminal device, so that after obtaining the first power offset, the terminal device can determine the path loss (i.e., the second path loss) between the terminal device and the second network device based on the first power offset and the path loss (i.e., the first path loss) between the terminal device and the first network device. The implementation method of the NW configuring and / or indicating the first power offset to the terminal device is as follows: the NW sends a signaling to the terminal device, which is used to determine the first path loss offset; the first path loss offset and the first path loss are used by the terminal device to determine the second path loss; the second path loss is used by the terminal device to determine the transmission power of the uplink signal and / or uplink channel sent to the second network device. In some implementation methods, the NW can be the first network device that supports downlink transmission or other network devices that support downlink transmission. The implementation method of the NW configuring and / or indicating the first power offset to the terminal device through signaling can be, but is not limited to, the following scheme.

[0230] In the following schemes 4 to 8, the path loss offset is associated with a unified TCI state. In the unified TCI state, the NW can selectively configure the PL RS (such as configuring the PL RS through the parameter pathlossReferenceRS-Id-r17) and other power control parameters (such as the uplink power control parameter ul-powerControl-r17). On this basis, the following schemes 4 to 8 provide a number of enhanced schemes. It should be noted that the signaling involved in the following schemes (such as any signaling in the first signaling, the second signaling, the third signaling, and the fourth signaling) can come from the first network device that supports downlink transmission or from other network devices that support downlink transmission. For example: NW sending signaling to the terminal device (such as any signaling in the first signaling, the second signaling, the third signaling, and the fourth signaling) can refer to the first network device or other network devices that support downlink transmission sending signaling to the terminal device.

[0231] Option 4

[0232] In some embodiments, the NW sends a first signaling to the terminal device, and the terminal device receives the first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS and a path loss offset, where N is a positive integer.

[0233] Here, the type of TCI state is UL TCI state or joint TCI state, and UL TCI state or joint TCI state is used by the terminal device to transmit uplink signals and / or uplink channels.

[0234] Here, the first signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission.

[0235] In some embodiments, the first signaling is RRC signaling. The NW configures N TCI states through RRC signaling, each of the N TCI states being associated with a PL RS and a path loss offset. In other words, the configuration of each of the N TCI states includes a PL RS and a path loss offset.

[0236] In some implementations, the path loss offset can be configured in two ways: an integer configuration, where the path loss offset can be configured as an integer from X to Y, for example, from -40dB to 20dB. The second enumerated configuration, for example, selects a value from A, B, C, or D.

[0237] In an example, the following Table 2 shows the configuration content of the TCI state.

[0238] Table 2

[0239] As shown in Table 2, the TCI state configuration includes: tci-StateId (i.e., TCI state identifier), qcl-Type1 (i.e., QCL type 1), qcl-Type2 (i.e., QCL type 2), pathlossReferenceRS-Id-r17 (i.e., PL RS), ul-powerControl-r17 (i.e., uplink power control), and plOffset-r19 (i.e., path loss offset). There are two ways to configure plOffset-r19: the first is the INTEGER configuration method, in which the path loss offset value can be configured as an integer from X to Y. The second is the ENUMERATED configuration method, in which, for example, a value is selected from the four values ​​​​A, B, C, and D for configuration.

[0240] The above-mentioned N TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the above-mentioned first path loss, and the path loss offset associated with the first TCI state is used by the terminal device to determine the above-mentioned first path loss offset.

[0241] Here, the definition of the indicated TCI state can refer to the aforementioned related description. The NW can indicate the first TCI state through RRC signaling, or indicate the first TCI state through RRC signaling and MAC CE, or indicate the first TCI state through RRC signaling, MAC CE and DCI. After the first TCI state is indicated by the NW, the first TCI state is the indicated TCI state. The way in which the NW indicates the first TCI state through signaling can refer to the aforementioned related description. It should be noted that, for the uplink transmission from the terminal device to the second network device, the NW can indicate a TCI state (i.e., the above-mentioned first TCI state) to the terminal device, and the terminal device sends an uplink signal and / or an uplink channel to the second network device based on the TCI state.

[0242] When the terminal device determines that the first TCI state is the indicated TCI state through NW signaling, the above-mentioned first path loss can be obtained by measuring the PL RS associated with the first TCI state, and the path loss offset associated with the first TCI state can be used as the above-mentioned first path loss offset.

[0243] Plan 5

[0244] In some embodiments, the NW sends a first signaling to the terminal device, and the terminal device receives the first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS and multiple path loss offsets, where N is a positive integer.

[0245] In some implementations, a TCI state may be configured with a maximum of maxNrofPLOffsets path loss offsets, where the value of maxNrofPLOffsets depends on the capabilities of the terminal device. The terminal device reports the maxNrofPLOffsets it supports to the network network (NW). The number of path loss offsets configured by the NW for each TCI state through the first signaling should be less than or equal to maxNrofPLOffsets.

[0246] Here, the type of TCI state is UL TCI state or joint TCI state, and UL TCI state or joint TCI state is used by the terminal device to transmit uplink signals and / or uplink channels.

[0247] Here, the first signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the first signaling to the terminal device.

[0248] In some implementations, the first signaling is RRC signaling. The NW configures N TCI states through RRC signaling, where each of the N TCI states is associated with a PL RS and multiple path loss offsets. In other words, the configuration of each of the N TCI states includes a PL RS and multiple path loss offsets.

[0249] In some implementations, the path loss offset can be configured in two ways: an integer configuration, where the path loss offset can be configured as an integer from X to Y, for example, from -40dB to 20dB. The second enumerated configuration, for example, selects a value from A, B, C, or D.

[0250] In an example, the following Table 3 shows the configuration content of the TCI state.

[0251] Table 3

[0252] As shown in Table 3, the difference between Table 3 and Table 2 is that the number of path loss offsets configured in Table 3 can be multiple, and the number of path loss offsets is less than or equal to maxNrofPLOffsets, thereby realizing one TCI state associated with multiple path loss offsets.

[0253] In some embodiments, the NW sends a second signaling to the terminal device, and the terminal device receives the second signaling, where the second signaling is used to activate M TCI states out of N TCI states and activate a path loss offset for each activated TCI state, where M is a positive integer less than or equal to N.

[0254] Here, the second signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the second signaling to the terminal device.

[0255] In some implementations, the second signaling is a MAC CE. The NW activates M TCI states from the N TCI states configured by the first signaling through the MAC CE and activates a path loss offset for each activated TCI state.

[0256] In one example, the structure of the MAC CE can refer to FIG7 , which is an enhancement of FIG2 . The fields in FIG7 that are the same as those in FIG2 can refer to the relevant descriptions of FIG2 . Only the fields in FIG7 that are different from those in FIG2 are described here. As shown in FIG7 , in addition to the TCI state identifier (TCI state ID) field, the MAC CE also includes a path loss offset identifier (PL-Offset ID) field, wherein the TCI state ID field is used to indicate the activated TCI state; and the PL-Offset ID field is used to indicate the activated path loss offset corresponding to the activated TCI state. It should be noted that the 8-bit length of the PL-Offset ID field is only exemplary and may also be other numbers of bits.

[0257] The difference between Solution 5 and Solution 4 is that in Solution 5, the NW configures multiple path loss offsets for each TCI state through the first signaling, so one path loss offset must be activated through a MAC CE. In Solution 4, the NW configures a single path loss offset for each TCI state through the first signaling, so there is no need to activate the path loss offset through a MAC CE.

[0258] The above-mentioned M TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0259] Here, the definition of the indicated TCI state can refer to the aforementioned related description. The NW can indicate the first TCI state through RRC signaling, or indicate the first TCI state through RRC signaling and MAC CE, or indicate the first TCI state through RRC signaling, MAC CE and DCI. After the first TCI state is indicated by the NW, the first TCI state is the indicated TCI state. The way in which the NW indicates the first TCI state through signaling can refer to the aforementioned related description. It should be noted that, for the uplink transmission from the terminal device to the second network device, the NW can indicate a TCI state (i.e., the above-mentioned first TCI state) to the terminal device, and the terminal device sends an uplink signal and / or an uplink channel to the second network device based on the TCI state.

[0260] When the terminal device determines that the first TCI state is the indicated TCI state through NW signaling, the above-mentioned first path loss can be obtained by measuring the PL RS associated with the first TCI state, and the activated path loss offset associated with the first TCI state can be used as the above-mentioned first path loss offset.

[0261] Plan 6

[0262] In some embodiments, the NW sends a first signaling to the terminal device, and the terminal device receives the first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states being associated with multiple PL RSs and multiple path loss offsets, where N is a positive integer.

[0263] In some implementations, a TCI state may be configured with a maximum of maxNrofPLRSperTCIState PL RSs, where the value of maxNrofPLRSperTCIState depends on the capabilities of the terminal device. The terminal device reports the maxNrofPLRSperTCIState it supports to the NW. The NW, through the first signaling, configures the number of PL RSs for each TCI state to be less than or equal to maxNrofPLRSperTCIState.

[0264] In some implementations, a TCI state may be configured with a maximum of maxNrofPLOffsets path loss offsets, where the value of maxNrofPLOffsets depends on the capabilities of the terminal device. The terminal device reports the maxNrofPLOffsets it supports to the network network (NW). The number of path loss offsets configured by the NW for each TCI state through the first signaling should be less than or equal to maxNrofPLOffsets.

[0265] Here, the type of TCI state is UL TCI state or joint TCI state, and UL TCI state or joint TCI state is used by the terminal device to transmit uplink signals and / or uplink channels.

[0266] Here, the first signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the first signaling to the terminal device.

[0267] In some implementations, the first signaling is RRC signaling. The NW configures N TCI states through RRC signaling, where each of the N TCI states is associated with multiple PL RSs and multiple path loss offsets. In other words, the configuration of each of the N TCI states includes multiple PL RSs and multiple path loss offsets.

[0268] In some implementations, the path loss offset can be configured in two ways: an integer configuration, where the path loss offset can be configured as an integer from X to Y, for example, from -40dB to 20dB. The second enumerated configuration, for example, selects a value from A, B, C, or D.

[0269] In an example, the following Table 4 shows the configuration content of the TCI state.

[0270] Table 4

[0271] As shown in Table 4, the difference between Table 4 and Table 3 is that the number of PL RSs configured in Table 4 can be multiple, and the number of PL RSs is less than or equal to maxNrofPLRSperTCIState, so that one TCI state is associated with multiple PL RSs.

[0272] The advantage of the NW configuring multiple PL RSs for each TCI state is that it can flexibly select one PL RS from multiple PL RSs for measurement, and obtain the above-mentioned first path loss by measuring the PL RS. The first path loss obtained by measuring different PL RSs is also different, and the second path loss determined based on the first path loss is more flexible. Since the second path loss is related to uplink power control, the flexibility of uplink power control is also improved. Generally, different PL RSs correspond to different network devices (such as TRPs). The terminal device can select one PL RS from the PL RSs sent by multiple network devices for measurement, thereby obtaining the above-mentioned first path loss.

[0273] In some embodiments, the NW sends a second signaling to the terminal device, and the terminal device receives the second signaling, where the second signaling is used to activate M TCI states out of N TCI states and activate a PL RS and a path loss offset for each activated TCI state, where M is a positive integer less than or equal to N.

[0274] Here, the second signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the second signaling to the terminal device.

[0275] In some implementations, the second signaling is a MAC CE. The NW activates M TCI states from the N TCI states configured by the first signaling through the MAC CE and activates a PL RS and a path loss offset for each activated TCI state.

[0276] In one example, the structure of a MAC CE can be seen in FIG8 , which is an enhancement of FIG7 . Fields in FIG8 that are identical to those in FIG7 (i.e., fields identical to those in FIG2 ) can be referred to in the relevant description of FIG2 . Only the fields in FIG8 that differ from those in FIG7 are described here. As shown in FIG8 , the MAC CE includes, in addition to a TCI state identifier (TCI state ID) field and a path loss offset identifier (PL-Offset ID) field, a PL RS identifier (RL RS ID) field. The TCI state ID field indicates the activated TCI state; the RL RS ID field indicates the activated RL RS corresponding to the activated TCI state; and the PL-Offset ID field indicates the activated path loss offset corresponding to the activated TCI state. It should be noted that the 8-bit length of the RL RS ID field and the PL-Offset ID field is for exemplary purposes only and may also contain other lengths of bits.

[0277] The difference between Solution 6 and Solution 5 is that in Solution 6, the NW configures multiple RL RSs for each TCI state through the first signaling, so one of the multiple RL RSs needs to be activated through a MAC CE. In Solution 5, the NW configures one RL RS for each TCI state through the first signaling, so there is no need to activate the RL RS through a MAC CE.

[0278] The above-mentioned M TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the activated PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0279] Here, the definition of the indicated TCI state can refer to the aforementioned related description. The NW can indicate the first TCI state through RRC signaling, or indicate the first TCI state through RRC signaling and MAC CE, or indicate the first TCI state through RRC signaling, MAC CE and DCI. After the first TCI state is indicated by the NW, the first TCI state is the indicated TCI state. The way in which the NW indicates the first TCI state through signaling can refer to the aforementioned related description. It should be noted that, for the uplink transmission from the terminal device to the second network device, the NW can indicate a TCI state (i.e., the above-mentioned first TCI state) to the terminal device, and the terminal device sends an uplink signal and / or an uplink channel to the second network device based on the TCI state.

[0280] When the terminal device determines that the first TCI state is the indicated TCI state through NW signaling, the above-mentioned first path loss can be obtained by measuring the activated PL RS associated with the first TCI state, and the activated path loss offset associated with the first TCI state can be used as the above-mentioned first path loss offset.

[0281] In the following schemes 7 to 8, the path loss offset is associated with the indicated TCI state. Here, the definition of the indicated TCI state can refer to the aforementioned related description. The NW can indicate the TCI state through RRC signaling, or indicate the TCI state through RRC signaling and MAC CE, or indicate the TCI state through RRC signaling, MAC CE and DCI (such as DCI format 1_1 or 1_2). After a TCI state is indicated by the NW, the TCI state is the indicated TCI state. The way in which the NW indicates the TCI state through signaling can refer to the aforementioned related description. It should be noted that for the uplink transmission from the terminal device to the second network device, the NW can indicate a TCI state to the terminal device, and the terminal device sends an uplink signal and / or an uplink channel to the second network device based on the TCI state. It can be understood that the TCI state is indicated by the NW through signaling before the uplink transmission, and the NW can also update the TCI state through signaling (that is, re-indicate a TCI state).

[0282] In some implementations, the NW indicates up to K TCI states. The value of K depends on the NW implementation. For example, the maximum value of K is 2, and the NW indicates up to two TCI states, referred to as the first indicated TCI state and the second indicated TCI state. Different indicated TCI states correspond to different network devices (e.g., TRPs).

[0283] Plan 7

[0284] In some implementations, the NW sends a first signaling to the terminal device, and the terminal device receives the first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS, and N is a positive integer.

[0285] Here, the type of TCI state is UL TCI state or joint TCI state, and UL TCI state or joint TCI state is used by the terminal device to transmit uplink signals and / or uplink channels.

[0286] Here, the first signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the first signaling to the terminal device.

[0287] In some implementations, the first signaling is RRC signaling. The NW configures N TCI states through RRC signaling, and each of the N TCI states is associated with a PL RS, or in other words, the configuration of each of the N TCI states includes a PL RS.

[0288] In some embodiments, K TCI states among the above-mentioned N TCI states are indicated TCI states, and K is a positive integer less than N; NW sends a third signaling to the terminal device, and the terminal device receives the third signaling, and the third signaling is used to indicate the path loss offset associated with all the indicated TCI states among the K indicated TCI states or the path loss offset associated with some of the indicated TCI states among the K indicated TCI states.

[0289] Here, the third signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the third signaling to the terminal device.

[0290] In some implementations, the third signaling is a MAC CE.

[0291] For solution seven, when the NW configures the TCI state through the first signaling (such as RRC signaling), it only configures a PL RS associated with the TCI state but does not configure the path loss offset associated with the TCI state. Then, the NW can additionally indicate a path loss offset for the indicated TCI state through the second signaling (such as MAC CE).

[0292] In an example, the structure of a MAC CE may include the following fields, as shown in Figure 9-1:

[0293] Serving Cell ID field: This field indicates the ID of the serving cell to which the MAC CE applies.

[0294] Downlink BWP ID (DL BWP ID) field: This field indicates the ID of the downlink BWP to which the MAC CE applies.

[0295] Uplink BWP ID (UL BWP ID) field: This field indicates the ID of the uplink BWP to which the MAC CE applies.

[0296] Path loss offset identifier (PL-Offset ID) field: This field indicates the identifier of the path loss offset.

[0297] R field: This field is a reserved field (ie, reserved bits), and the bits in this field are set to 0.

[0298] The PL-Offset ID domain includes K PL-Offset IDs (i.e., PL-Offset ID 1, PL-Offset ID 2, ..., PL-Offset ID K). These K PL-Offset IDs correspond to the path loss offsets corresponding to K indicated TCI states in sequence, such as PL-Offset ID 1 corresponds to the path loss offset corresponding to the first indicated TCI state, PL-Offset ID 2 corresponds to the path loss offset corresponding to the second indicated TCI state, and so on. PL-Offset ID K corresponds to the path loss offset corresponding to the Kth indicated TCI state.

[0299] In an example, the structure of a MAC CE may include the following fields, as shown in Figure 9-2:

[0300] Serving Cell ID field: This field indicates the ID of the serving cell to which the MAC CE applies.

[0301] Downlink BWP ID (DL BWP ID) field: This field indicates the ID of the downlink BWP to which the MAC CE applies.

[0302] Uplink BWP ID (UL BWP ID) field: This field indicates the ID of the uplink BWP to which the MAC CE applies.

[0303] The k-th indicated TCI state field: This field indicates the k-th indicated TCI state.

[0304] Path loss offset identifier (PL-Offset ID) field: This field indicates the path loss offset identifier corresponding to the kth indicated TCI state.

[0305] The difference between Figure 9-2 and Figure 9-1 is that Figure 9-2 separately indicates the path loss offset corresponding to the kth (1≤k≤K) indicated TCI state among the K indicated TCI states, while Figure 9-1 indicates the path loss offset corresponding to all indicated TCI states among the K indicated TCI states.

[0306] The first indicated TCI state among the above K indicated TCI states has a corresponding relationship with the second network device, the PL RS associated with the first indicated TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first indicated TCI state is used by the terminal device to determine the first path loss offset.

[0307] Here, different indicated TCI states correspond to different network devices, and the indicated TCI states corresponding to the network devices are used for uplink transmission from the terminal device to the network device. The first indicated TCI state has a corresponding relationship with the second network device, so the first indicated TCI state is used for uplink transmission from the terminal device to the second network device. Before performing uplink transmission, the terminal device can obtain the above-mentioned first path loss based on the PL RS associated with the first indicated TCI state, and can use the path loss offset associated with the first indicated TCI state as the above-mentioned first path loss offset, and then determine the second path loss based on the first path loss and the first path loss offset, and determine the transmit power of the uplink transmission based on the second path loss.

[0308] Plan 8

[0309] In some implementations, the NW sends a first signaling to the terminal device, and the terminal device receives the first signaling, where the first signaling is used to configure N TCI states, where N is a positive integer.

[0310] Here, the type of TCI state is UL TCI state or joint TCI state, and UL TCI state or joint TCI state is used by the terminal device to transmit uplink signals and / or uplink channels.

[0311] Here, the first signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the first signaling to the terminal device.

[0312] In some implementations, the first signaling is RRC signaling, and the NW configures N TCI states through RRC signaling.

[0313] In some embodiments, K TCI states among the above-mentioned N TCI states are indicated TCI states, and K is a positive integer less than N; NW sends a third signaling to the terminal device, and the terminal device receives the third signaling, and the third signaling is used to indicate the PL RS and path loss offset associated with all the indicated TCI states among the K indicated TCI states or the PL RS and path loss offset associated with some of the indicated TCI states among the K indicated TCI states.

[0314] Here, the third signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the third signaling to the terminal device.

[0315] In some implementations, the third signaling is a MAC CE.

[0316] For scheme eight, when the NW configures the TCI state through the first signaling (such as RRC signaling), the PL RS associated with the TCI state is not configured, nor is the path loss offset associated with the TCI state configured. Then, the NW can additionally indicate a PL RS and a path loss offset for the indicated TCI state through the second signaling (such as MAC CE).

[0317] In one example, the structure of a MAC CE can be referred to Figure 10-1. Figure 10-1 is an enhancement of Figure 9-1. For fields in Figure 10-1 that are identical to those in Figure 9-1, refer to the relevant descriptions in Figure 9-1. Only the fields in Figure 10-1 that differ from those in Figure 9-1 are described here. As shown in Figure 10-1, the MAC CE includes a PL RS ID field in addition to a Path Loss Offset ID field.

[0318] The PL-Offset ID domain includes K PL-Offset IDs (i.e., PL-Offset ID 1, PL-Offset ID 2, ..., PL-Offset ID K). These K PL-Offset IDs correspond to the path loss offsets corresponding to K indicated TCI states in sequence, such as PL-Offset ID 1 corresponds to the path loss offset corresponding to the first indicated TCI state, PL-Offset ID 2 corresponds to the path loss offset corresponding to the second indicated TCI state, and so on. PL-Offset ID K corresponds to the path loss offset corresponding to the Kth indicated TCI state.

[0319] The PL RS ID field includes K PL RS IDs (i.e., PL RS ID 1, PL RS ID 2, ..., PL RS ID K). These K PL RS IDs correspond to the PL RSs corresponding to the K indicated TCI states in sequence, such as PL RS ID 1 corresponds to the PL RS corresponding to the first indicated TCI state, PL RS ID 2 corresponds to the PL RS corresponding to the second indicated TCI state, and so on. PL RS ID K corresponds to the PL RS corresponding to the Kth indicated TCI state.

[0320] In one example, the structure of a MAC CE can refer to FIG10-2. FIG10-2 is an enhancement of FIG9-2. The fields in FIG10-2 that are the same as those in FIG9-2 can be referred to the relevant description of FIG9-2. Only the fields in FIG10-2 that are different from those in FIG9-2 are described here. As shown in FIG10-2, the MAC CE includes, in addition to the k-th indicated TCI state field and the path loss offset identifier (PL-Offset ID) field, a PL RS identifier (PL RS ID) field. The k-th indicated TCI state field is used to indicate the k-th indicated TCI state, the PL-Offset ID field is used to indicate the path loss offset corresponding to the k-th indicated TCI state, and the PL RS ID field is used to indicate the identifier of the PL RS corresponding to the k-th indicated TCI state.

[0321] The difference between Figure 10-2 and Figure 10-1 is that Figure 10-2 separately indicates the PL RS and path loss offset corresponding to the kth (1≤k≤K) indicated TCI state among the K indicated TCI states, while Figure 10-1 indicates the PL RS and path loss offset corresponding to all indicated TCI states among the K indicated TCI states.

[0322] The first indicated TCI state among the above K indicated TCI states has a corresponding relationship with the second network device, the PL RS associated with the first indicated TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first indicated TCI state is used by the terminal device to determine the first path loss offset.

[0323] Here, different indicated TCI states correspond to different network devices, and the indicated TCI states corresponding to the network devices are used for uplink transmission from the terminal device to the network device. The first indicated TCI state has a corresponding relationship with the second network device, so the first indicated TCI state is used for uplink transmission from the terminal device to the second network device. Before performing uplink transmission, the terminal device can obtain the above-mentioned first path loss based on the PL RS associated with the first indicated TCI state, and can use the path loss offset associated with the first indicated TCI state as the above-mentioned first path loss offset, and then determine the second path loss based on the first path loss and the first path loss offset, and determine the transmit power of the uplink transmission based on the second path loss.

[0324] It should be noted that the type of the above-mentioned TCI state described in the embodiments of the present application may be a UL TCI state or a joint TCI state, and the UL TCI state or the joint TCI state is used by the terminal device to transmit uplink signals and / or uplink channels.

[0325] Plan 9

[0326] In some implementations, the NW sends a fourth signaling to the terminal device, and the terminal device receives the fourth signaling, where the fourth signaling is used to determine the first path loss offset.

[0327] Here, the fourth signaling comes from the first network device (the first network device supports downlink transmission) or from other network devices supporting downlink transmission. In some implementations, the first network device sends the fourth signaling to the terminal device.

[0328] In some embodiments, the fourth signaling is DCI. The NW indicates a path loss offset via the DCI, and the first path loss offset can be determined based on the path loss offset. As an implementation, the terminal device can directly use the path loss offset indicated by the DCI as the first path loss offset. As another implementation, the terminal device superimposes the path loss offset indicated by the DCI with the currently stored or last used path loss offset as the first path loss offset.

[0329] In one example, the format of DCI is DCI format 2_2, which is used to schedule PUCCH or PUSCH transmission. An additional path loss offset field can be added to DCI format 2_2 to indicate the path loss offset corresponding to the uplink transmission (i.e., PUCCH or PUSCH transmission).

[0330] In one example, the format of DCI is DCI format 2_3, which is used to schedule SRS transmission. An additional path loss offset field can be added to DCI format 2_3 to indicate the path loss offset corresponding to the uplink transmission (ie, SRS transmission).

[0331] For example, the length of the path loss offset field can be 1 bit, 2 bits, or 3 bits or more. Taking 2 bits as an example, the four values ​​of 2 bits can respectively indicate the following four path loss offsets: {-30dB, -15dB, 0dB, 15dB}.

[0332] In some implementations, the terminal device uses the path loss offset indicated by the DCI in the following two ways:

[0333] The first method: the terminal device directly uses the path loss offset indicated by the DCI as the first path loss offset.

[0334] The second method: The terminal device adds the path loss offset indicated by the DCI to the currently stored or last used path loss offset as the first path loss offset. For example, if the path loss offset currently stored by the terminal device is -20dB, and the path loss offset indicated in the DCI is -10dB, then the terminal device adds -20dB to -10dB and uses the resulting -30dB as the first path loss offset.

[0335] Step 302: The terminal device determines the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the second network device based on the second path loss.

[0336] In some implementations, the uplink signal or uplink channel includes at least one of the following: PUSCH, PUCCH, SRS, and PRACH, wherein PUSCH, PUCCH, and PRACH are uplink channels, and SRS is an uplink signal.

[0337] The transmission power of the uplink signal and / or uplink channel may be determined based on an uplink power control formula, which is described below.

[0338] 1) The transmit power of PUSCH is calculated using the following formula (5):

[0339] Formula (5) is an enhancement of the above formula (1). The parameters in formula (5) that are the same as those in formula (1) can refer to the relevant description of formula (1). Here we only describe the parameters in formula (5) that are different from those in formula (1). The parameter PL is added to formula (5) offset (q d ), represents the first path loss offset. In addition, PL b,f,c (q d ) represents the first path loss, and PL b,f,c (q d )+PL offset (q d ) represents the second path loss mentioned above.

[0340] 2) The transmit power of PUCCH is calculated using the following formula (6):

[0341] Formula (6) is an enhancement of the above formula (2). The parameters in formula (6) that are the same as those in formula (2) can refer to the relevant description of formula (2). Here we only describe the parameters in formula (6) that are different from those in formula (6). The parameter PL is added to formula (6) offset (q d ), represents the first path loss offset. In addition, PL b,f,c (q d ) represents the first path loss, and PL b,f,c (q d )+PL offset (q d ) represents the second path loss mentioned above.

[0342] 3) The SRS transmission power is calculated using the following formula (7):

[0343] Formula (7) is an enhancement of the above formula (3). The parameters in formula (7) that are the same as those in formula (3) can refer to the relevant description of formula (3). Here we only describe the parameters in formula (7) that are different from those in formula (3). The parameter PL is added to formula (7) offset (q d ), represents the first path loss offset. In addition, PL b,f,c (q d ) represents the first path loss, and PL b,f,c (q d )+PL offset (q d ) represents the second path loss mentioned above.

[0344] 4) The transmit power of PRACH is calculated by the following formula (8): PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c +PL offset,b,f,c}[dBm] (8) Formula (8) is an enhancement of the above formula (4). The same parameters in formula (8) as those in formula (4) can refer to the relevant description of formula (4). Here we only describe the parameters in formula (8) that are different from those in formula (4). The parameter PL is added to formula (8) offset,b,f,c , represents the first path loss offset mentioned above. In addition, PL b,f,c represents the first path loss mentioned above, and L b,f,c +PL offset,b,f,c represents the second path loss mentioned above.

[0345] After the terminal device determines the transmission power of the uplink signal and / or uplink channel based on the above formulas (5) to (8), it can send the uplink signal and / or uplink channel to the second network device according to the transmission power, thereby realizing the uplink power control of the terminal device for the second network device.

[0346] The technical solutions of the embodiments of the present application are illustrated below with reference to specific application examples.

[0347] Application Example 1

[0348] This application example corresponds to the above-mentioned solution five, and the relevant descriptions in the above-mentioned solution five can be combined with this application example in any way.

[0349] FIG11 is a second flow chart of a power control method according to an embodiment of the present application. As shown in FIG11 , the power control method includes at least part of the following:

[0350] Step 1101: The terminal device receives RRC signaling sent by a regular TRP, where the RRC signaling is used to configure N TCI states. Each of the N TCI states is associated with a PL RS and multiple path loss offsets, where N is a positive integer.

[0351] Step 1102: The terminal device receives a MAC CE sent by a regular TRP, where the MAC CE is used to activate M TCI states out of N TCI states and activate a path loss offset for each activated TCI state, where M is a positive integer less than or equal to N.

[0352] Step 1103: The terminal device receives the DCI sent by the regular TRP, where the DCI is used to indicate one TCI state among M TCI states, and the TCI state is the indicated TCI state.

[0353] Step 1104: The terminal device measures the PL RS associated with the indicated TCI state to obtain a first path loss.

[0354] Step 1105: The terminal device superimposes the first path loss on the activated path loss offset associated with the indicated TCI state to obtain a second path loss.

[0355] Step 1106: The terminal device calculates the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the uplink TRP based on the second path loss and the uplink power control formula.

[0356] Step 1107: The terminal device uses the indicated TCI state to send the uplink signal and / or uplink channel to the uplink TRP based on the calculated transmission power.

[0357] Application Example 2

[0358] This application example corresponds to the above-mentioned solution six, and the relevant descriptions in the above-mentioned solution six can be combined with this application example in any way.

[0359] FIG12 is a third flow chart of a power control method according to an embodiment of the present application. As shown in FIG12 , the power control method includes at least part of the following:

[0360] Step 1201: The terminal device receives RRC signaling sent by a regular TRP, where the RRC signaling is used to configure N TCI states. Each of the N TCI states is associated with multiple PL RSs and multiple path loss offsets, where N is a positive integer.

[0361] Step 1202: The terminal device receives a MAC CE sent by a regular TRP, where the MAC CE is used to activate M TCI states out of N TCI states and activate a PL RS and a path loss offset for each activated TCI state, where M is a positive integer less than or equal to N.

[0362] Step 1203: The terminal device receives the DCI sent by the regular TRP, where the DCI is used to indicate one TCI state among M TCI states, and the TCI state is the indicated TCI state.

[0363] Step 1204: The terminal device measures the activated PL RS associated with the indicated TCI state to obtain a first path loss.

[0364] Step 1205: The terminal device superimposes the first path loss on the activated path loss offset associated with the indicated TCI state to obtain a second path loss.

[0365] Step 1206: The terminal device calculates the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the uplink TRP based on the second path loss and the uplink power control formula.

[0366] Step 1207: The terminal device uses the indicated TCI state to send the uplink signal and / or uplink channel to the uplink TRP based on the calculated transmission power.

[0367] Application Example 3

[0368] This application example corresponds to the above-mentioned solution seven, and the relevant descriptions in the above-mentioned solution seven can be combined with this application example in any way.

[0369] FIG13 is a fourth flow chart of a power control method according to an embodiment of the present application. As shown in FIG13 , the power control method includes at least part of the following:

[0370] Step 1301: The terminal device receives RRC signaling sent by a regular TRP, where the RRC signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS, and N is a positive integer.

[0371] Step 1302: The terminal device receives a MAC CE sent by a regular TRP, where the MAC CE is used to activate M TCI states out of N TCI states, where M is a positive integer less than or equal to N.

[0372] Step 1303: The terminal device receives the DCI sent by the regular TRP, where the DCI is used to indicate one TCI state among M TCI states, and the TCI state is the indicated TCI state.

[0373] Step 1304: The terminal device receives a MAC CE sent by a regular TRP, where the MAC CE is used to indicate the path loss offset associated with the indicated TCI state.

[0374] Step 1305: The terminal device measures the PL RS associated with the indicated TCI state to obtain a first path loss.

[0375] Step 1306: The terminal device superimposes the first path loss on the path loss offset associated with the indicated TCI state to obtain a second path loss.

[0376] Step 1307: The terminal device calculates the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the uplink TRP based on the second path loss and the uplink power control formula.

[0377] Step 1308: The terminal device uses the indicated TCI state to send the uplink signal and / or uplink channel to the uplink TRP based on the calculated transmission power.

[0378] Application Example 4

[0379] This application example corresponds to the above-mentioned solution eight, and the relevant descriptions in the above-mentioned solution eight can be combined with this application example in any way.

[0380] FIG14 is a fifth flow chart of a power control method according to an embodiment of the present application. As shown in FIG14 , the power control method includes at least part of the following:

[0381] Step 1401: The terminal device receives the RRC signaling sent by the regular TRP, which is used to configure N TCI states, where N is a positive integer.

[0382] Step 1402: The terminal device receives a MAC CE sent by a regular TRP, where the MAC CE is used to activate M TCI states out of N TCI states, where M is a positive integer less than or equal to N.

[0383] Step 1403: The terminal device receives the DCI sent by the regular TRP, where the DCI is used to indicate one TCI state among M TCI states, and the TCI state is the indicated TCI state.

[0384] Step 1404: The terminal device receives a MAC CE sent by a regular TRP, where the MAC CE is used to indicate the associated PL RS and path loss offset for the indicated TCI state.

[0385] Step 1405: The terminal device measures the PL RS associated with the indicated TCI state to obtain a first path loss.

[0386] Step 1406: The terminal device superimposes the first path loss on the path loss offset associated with the indicated TCI state to obtain a second path loss.

[0387] Step 1407: The terminal device calculates the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the uplink TRP based on the second path loss and the uplink power control formula.

[0388] Step 1408: The terminal device uses the indicated TCI state to send the uplink signal and / or uplink channel to the uplink TRP based on the calculated transmission power.

[0389] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0390] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in 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. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0391] FIG15 is a schematic diagram of the first structure of a power control device provided in an embodiment of the present application, which is applied to a terminal device. As shown in FIG15 , the power control device includes:

[0392] Determination unit 1501 is used to determine a second path loss based on a first path loss and a first path loss offset; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device; based on the second path loss, determine the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the second network device.

[0393] In some implementations, the power control apparatus further includes: a sending unit 1502 .

[0394] In some embodiments, the sending unit 1502 is used to send an uplink reference signal to the first network device and the second network device; the first path loss offset is determined based on a first receiving power and a second receiving power, the first receiving power being the receiving power corresponding to the uplink reference signal being received by the first network device, and the second receiving power being the receiving power corresponding to the uplink reference signal being received by the second network device.

[0395] In some embodiments, the sending unit 1502 is configured to send a first uplink reference signal to the first network device and a second uplink reference signal to the second network device; the first path loss offset is determined based on a first received power and a second received power, where the first received power is the received power corresponding to when the first uplink reference signal is received by the first network device, and the second received power is the received power corresponding to when the second uplink reference signal is received by the second network device. The transmit power of the second uplink reference signal is the same as the transmit power of the first uplink reference signal.

[0396] In some embodiments, the sending unit 1502 is configured to send a first uplink reference signal to the first network device and a second uplink reference signal to the second network device; the first path loss offset is determined based on a first transmit power, a second transmit power, a first receive power, and a second receive power, where the first transmit power is the transmit power of the first uplink reference signal, the second transmit power is the transmit power of the second uplink reference signal, the first receive power is the receive power corresponding to when the first uplink reference signal is received by the first network device, and the second receive power is the receive power corresponding to when the second uplink reference signal is received by the second network device. The transmit power of the second uplink reference signal is determined based on the transmit power of the first uplink reference signal and the first power offset.

[0397] In some embodiments, the first power offset is predefined or network configured.

[0398] In some implementations, the power control apparatus further includes: a receiving unit 1503 .

[0399] In some embodiments, the receiving unit 1503 is used to receive first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with a path loss reference signal PL RS and a path loss offset, where N is a positive integer.

[0400] In some embodiments, the N TCI states include a first TCI state, and when the first TCI state is an indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0401] In some embodiments, the receiving unit 1503 is used to receive first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS and multiple path loss offsets, and N is a positive integer.

[0402] In some embodiments, the receiving unit 1503 is used to receive second signaling, where the second signaling is used to activate M TCI states among the N TCI states and activate a path loss offset for each activated TCI state, where M is a positive integer less than or equal to N.

[0403] In some embodiments, the M TCI states include a first TCI state, and when the first TCI state is an indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0404] In some embodiments, the receiving unit 1503 is used to receive first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with multiple PL RSs and multiple path loss offsets, and N is a positive integer.

[0405] In some embodiments, the receiving unit 1503 is used to receive second signaling, where the second signaling is used to activate M TCI states among the N TCI states and activate a PL RS and a path loss offset for each activated TCI state, where M is a positive integer less than or equal to N.

[0406] In some embodiments, the M TCI states include a first TCI state, and when the first TCI state is an indicated TCI state, the activated PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0407] In some implementations, the receiving unit 1503 is configured to receive first signaling, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS, and N is a positive integer.

[0408] In some embodiments, K TCI states among the N TCI states are indicated TCI states, and K is a positive integer less than N; the receiving unit 1503 is used to receive a third signaling, and the third signaling is used to indicate the path loss offset associated with all the indicated TCI states among the K indicated TCI states or the path loss offset associated with some of the indicated TCI states among the K indicated TCI states.

[0409] In some implementations, the receiving unit 1503 is configured to receive first signaling, where the first signaling is used to configure N TCI states, where N is a positive integer.

[0410] In some embodiments, K TCI states among the N TCI states are indicated TCI states, and K is a positive integer less than N; the receiving unit 1503 is used to receive a third signaling, and the third signaling is used to indicate the PL RS and path loss offset associated with all the indicated TCI states among the K indicated TCI states, or to indicate the PL RS and path loss offset associated with some of the indicated TCI states among the K indicated TCI states.

[0411] In some embodiments, the first indicated TCI state among the K indicated TCI states has a corresponding relationship with the second network device, the PL RS associated with the first indicated TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first indicated TCI state is used by the terminal device to determine the first path loss offset.

[0412] In some implementations, the receiving unit 1503 is configured to receive fourth signaling, where the fourth signaling is used to determine the first path loss offset.

[0413] Those skilled in the art should understand that the relevant description of the above-mentioned power control device in the embodiment of the present application can be understood with reference to the relevant description of the power control method in the embodiment of the present application.

[0414] FIG16 is a second schematic diagram of the structure of a power control device provided in an embodiment of the present application, which is applied to a network device (such as the first network device described above). As shown in FIG16 , the power control device includes:

[0415] Sending unit 1601 is used to send signaling to the terminal device, where the signaling is used to determine a first path loss offset; the first path loss offset and the first path loss are used by the terminal device to determine a second path loss; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device; the second path loss is used by the terminal device to determine the transmission power of the uplink signal and / or uplink channel sent to the second network device.

[0416] In some implementations, the apparatus further includes: a receiving unit 1602 .

[0417] In some embodiments, the receiving unit 1602 is used to receive an uplink reference signal sent by the terminal device; the first path loss offset is determined based on a first receiving power and a second receiving power, the first receiving power being the corresponding receiving power when the uplink reference signal is received by the first network device, and the second receiving power being the corresponding receiving power when the uplink reference signal is received by the second network device.

[0418] In some embodiments, the receiving unit 1602 is configured to receive a first uplink reference signal sent by the terminal device; the first path loss offset is determined based on a first received power and a second received power, where the first received power is the received power corresponding to when the first uplink reference signal is received by the first network device, and the second received power is the received power corresponding to when the second uplink reference signal is received by the second network device. In some embodiments, the transmit power of the second uplink reference signal is the same as the transmit power of the first uplink reference signal.

[0419] In some embodiments, the receiving unit 1602 is configured to receive a first uplink reference signal sent by the terminal device; the first path loss offset is determined based on a first transmit power, a second transmit power, a first receive power, and a second receive power, wherein the first transmit power is the transmit power of the first uplink reference signal, the second transmit power is the transmit power of the second uplink reference signal sent by the terminal device, the first receive power is the receive power corresponding to the first uplink reference signal received by the first network device, and the second receive power is the receive power corresponding to the second uplink reference signal received by the second network device. In some embodiments, the transmit power of the second uplink reference signal is determined based on the transmit power of the first uplink reference signal and the first power offset. In some embodiments, the first power offset is predefined or network configured.

[0420] In some embodiments, the sending unit 1601 is used to send a first signaling to the terminal device, where the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS and a path loss offset, and N is a positive integer.

[0421] In some embodiments, the N TCI states include a first TCI state, and when the first TCI state is an indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0422] In some embodiments, the sending unit 1601 is used to send first signaling and second signaling to the terminal device; the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS and multiple path loss offsets, and N is a positive integer; the second signaling is used to activate M TCI states of the N TCI states and activate a path loss offset for each activated TCI state, and M is a positive integer less than or equal to N.

[0423] In some embodiments, the M TCI states include a first TCI state, and when the first TCI state is an indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0424] In some embodiments, the sending unit 1601 is used to send first signaling and second signaling to the terminal device; the first signaling is used to configure N TCI states, each of the N TCI states is associated with multiple PL RSs and multiple path loss offsets, and N is a positive integer; the second signaling is used to activate M TCI states of the N TCI states and activate a PL RS and a path loss offset for each activated TCI state, and M is a positive integer less than or equal to N.

[0425] In some embodiments, the M TCI states include a first TCI state, and when the first TCI state is an indicated TCI state, the activated PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

[0426] In some embodiments, the sending unit 1601 is used to send a first signaling and a third signaling to the terminal device; the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS, and N is a positive integer; K TCI states among the N TCI states are indicated TCI states, and K is a positive integer less than N; the third signaling is used to indicate the path loss offset associated with all of the K indicated TCI states or the path loss offset associated with some of the K indicated TCI states.

[0427] In some embodiments, the sending unit 1601 is used to send a first signaling and a third signaling to the terminal device; the first signaling is used to configure N TCI states, where N is a positive integer; K TCI states among the N TCI states are indicated TCI states, where K is a positive integer less than N; the third signaling is used to indicate the PL RS and path loss offset associated with all indicated TCI states among the K indicated TCI states, or to indicate the PL RS and path loss offset associated with some indicated TCI states among the K indicated TCI states.

[0428] In some embodiments, the first indicated TCI state among the K indicated TCI states has a corresponding relationship with the second network device, the PL RS associated with the first indicated TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first indicated TCI state is used by the terminal device to determine the first path loss offset.

[0429] In some implementations, the sending unit 1601 is configured to send a fourth signaling to a terminal device, where the fourth signaling is used to determine the first path loss offset.

[0430] Those skilled in the art should understand that the relevant description of the above-mentioned power control device in the embodiment of the present application can be understood with reference to the relevant description of the power control method in the embodiment of the present application.

[0431] Figure 17 is a schematic structural diagram of a communication device 1700 provided in an embodiment of the present application. The communication device can be a terminal device or a network device (such as the first network device described above). The communication device 1700 shown in Figure 17 includes a processor 1710, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0432] Optionally, as shown in FIG17 , the communication device 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 in the embodiment of the present application.

[0433] The memory 1720 may be a separate device independent of the processor 1710 , or may be integrated into the processor 1710 .

[0434] Optionally, as shown in FIG17 , the communication device 1700 may further include a transceiver 1730 , and the processor 1710 may control the transceiver 1730 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0435] The transceiver 1730 may include a transmitter and a receiver. The transceiver 1730 may further include an antenna, and the number of antennas may be one or more.

[0436] In some embodiments, the communication device 1700 may specifically be a terminal device of an embodiment of the present application, and the communication device 1700 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0437] In some embodiments, the communication device 1700 may specifically be a network device of an embodiment of the present application (such as the first network device mentioned above), and the communication device 1700 may implement the corresponding processes implemented by the NW in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0438] Figure 18 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1800 shown in Figure 18 includes a processor 1810, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0439] Optionally, as shown in FIG18 , the chip 1800 may further include a memory 1820 , wherein the processor 1810 may call and execute a computer program from the memory 1820 to implement the method in the embodiment of the present application.

[0440] The memory 1820 may be a separate device independent of the processor 1810 , or may be integrated into the processor 1810 .

[0441] Optionally, the chip 1800 may further include an input interface 1830. The processor 1810 may control the input interface 1830 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0442] Optionally, the chip 1800 may further include an output interface 1840. The processor 1810 may control the output interface 1840 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0443] In some embodiments, 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 the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0444] In some embodiments, the chip can be applied to the network device in the embodiments of the present application (such as the first network device mentioned above), and the chip can implement the corresponding processes implemented by the NW in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0445] 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.

[0446] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0447] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, 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), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as 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 bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0448] 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.

[0449] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0450] In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0451] In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiments of the present application (such as the first network device mentioned above), and the computer program enables the computer to execute the corresponding processes implemented by the NW in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0452] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0453] In some embodiments, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0454] In some embodiments, the computer program product can be applied to the network device in the embodiments of the present application (such as the first network device mentioned above), and the computer program instructions enable the computer to execute the corresponding processes implemented by the NW in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0455] The embodiment of the present application also provides a computer program.

[0456] In some embodiments, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0457] In some embodiments, the computer program can be applied to the network device in the embodiments of the present application (such as the first network device mentioned above). When the computer program is run on the computer, the computer executes the corresponding processes implemented by the NW in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0458] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0459] 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.

[0460] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0461] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0462] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0463] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0464] 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 changes 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 in 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 power control method, the method comprises: The terminal device determines a second path loss based on a first path loss and a first path loss offset; The first path loss is the path loss between the terminal device and a first network device, and the second path loss is the path loss between the terminal device and a second network device; The terminal device determines the transmission power of an uplink signal and / or an uplink channel sent by the terminal device to the second network device based on the second path loss.

2. The method according to claim 1, wherein, the method further comprises: The terminal device sends an uplink reference signal to the first network device and the second network device; the first path loss offset is determined based on a first received power and a second received power, the first received power is the received power corresponding to the uplink reference signal received by the first network device, and the second received power is the received power corresponding to the uplink reference signal received by the second network device.

3. The method according to claim 1, wherein, the method further comprises: The terminal device sends a first uplink reference signal to the first network device and a second uplink reference signal to the second network device; the first path loss offset is determined based on a first received power and a second received power, the first received power is the received power corresponding to the first uplink reference signal received by the first network device, and the second received power is the received power corresponding to the second uplink reference signal received by the second network device.

4. The method according to claim 3, wherein, The transmission power of the second uplink reference signal is the same as the transmission power of the first uplink reference signal.

5. The method according to claim 1, wherein, the method further comprises: The terminal device sends a first uplink reference signal to the first network device and a second uplink reference signal to the second network device; the first path loss offset is determined based on a first transmission power, a second transmission power, a first received power and a second received power, the first transmission power is the transmission power of the first uplink reference signal, the second transmission power is the transmission power of the second uplink reference signal, the first received power is the received power corresponding to the first uplink reference signal received by the first network device, and the second received power is the received power corresponding to the second uplink reference signal received by the second network device.

6. The method according to claim 5, wherein, The transmission power of the second uplink reference signal is determined based on the transmission power of the first uplink reference signal and a first power offset.

7. The method according to claim 6, wherein, The first power offset is predefined or network-configured.

8. The method according to any one of claims 1 to 7, wherein, the method further comprises: The terminal device receives a first signaling, where the first signaling is used to configure N TCI states, and each of the N TCI states is associated with a path loss reference signal (PL RS) and a path loss offset, and N is a positive integer.

9. The method according to claim 8, wherein, the N TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

10. The method according to any one of claims 1 to 7, wherein, the method further includes: the terminal device receives a first signaling, where the first signaling is used to configure N TCI states, and each of the N TCI states is associated with a PL RS and multiple path loss offsets, and N is a positive integer.

11. The method according to claim 10, wherein, the method further includes: the terminal device receives a second signaling, where the second signaling is used to activate M TCI states among the N TCI states and activate a path loss offset for each activated TCI state, and M is a positive integer less than or equal to N.

12. The method according to claim 11, wherein, the M TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

13. The method according to any one of claims 1 to 7, wherein, the method further includes: the terminal device receives a first signaling, where the first signaling is used to configure N TCI states, and each of the N TCI states is associated with multiple PL RSs and multiple path loss offsets, and N is a positive integer.

14. The method according to claim 13, wherein, the method further includes: the terminal device receives a second signaling, where the second signaling is used to activate M TCI states among the N TCI states and activate a PL RS and a path loss offset for each activated TCI state, and M is a positive integer less than or equal to N.

15. The method according to claim 14, wherein, the M TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the activated PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

16. The method according to any one of claims 1 to 7, wherein, the method further includes: The terminal device receives a first signaling, where the first signaling is used to configure N TCI states, and each TCI state among the N TCI states is associated with a PL RS, and N is a positive integer.

17. The method according to claim 16, wherein, K TCI states among the N TCI states are indicated TCI states, and K is a positive integer less than N; the method further includes: The terminal device receives a third signaling, where the third signaling is used to indicate the path loss offset associated with all the indicated TCI states among the K indicated TCI states or to indicate the path loss offset associated with some of the indicated TCI states among the K indicated TCI states.

18. The method according to any one of claims 1 to 7, wherein, The method further includes: The terminal device receives a first signaling, where the first signaling is used to configure N TCI states, and N is a positive integer.

19. The method according to claim 18, wherein, K TCI states among the N TCI states are indicated TCI states, and K is a positive integer less than N; the method further includes: The terminal device receives a third signaling, where the third signaling is used to indicate the PL RS and the path loss offset associated with all the indicated TCI states among the K indicated TCI states or to indicate the PL RS and the path loss offset associated with some of the indicated TCI states among the K indicated TCI states.

20. The method according to claim 17 or 19, wherein, The first indicated TCI state among the K indicated TCI states has a corresponding relationship with the second network device, the PL RS associated with the first indicated TCI state is used for the terminal device to determine the first path loss, and the path loss offset associated with the first indicated TCI state is used for the terminal device to determine the first path loss offset.

21. The method according to any one of claims 1 to 7, wherein, The method further includes: The terminal device receives a fourth signaling, where the fourth signaling is used to determine the first path loss offset.

22. A power control method, the method includes: A first network device sends a signaling to a terminal device, where the signaling is used to determine a first path loss offset; The first path loss offset and the first path loss are used for the terminal device to determine a second path loss; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and a second network device; the second path loss is used for the terminal device to determine the transmission power of an uplink signal and / or an uplink channel sent to the second network device.

23. The method according to claim 22, wherein, The method further includes: The first network device receives the uplink reference signal sent by the terminal device; the first path loss offset is determined based on a first received power and a second received power, where the first received power is the received power corresponding to the uplink reference signal being received by the first network device, and the second received power is the received power corresponding to the uplink reference signal being received by the second network device.

24. According to the method of claim 22, wherein, the method further includes: The first network device receives the first uplink reference signal sent by the terminal device; the first path loss offset is determined based on a first received power and a second received power, where the first received power is the received power corresponding to the first uplink reference signal being received by the first network device, and the second received power is the received power corresponding to the second uplink reference signal being received by the second network device.

25. According to the method of claim 24, wherein, The transmission power of the second uplink reference signal is the same as the transmission power of the first uplink reference signal.

26. According to the method of claim 22, wherein, the method further includes: The first network device receives the first uplink reference signal sent by the terminal device; the first path loss offset is determined based on a first transmission power, a second transmission power, a first received power, and a second received power, where the first transmission power is the transmission power of the first uplink reference signal, the second transmission power is the transmission power of the second uplink reference signal sent by the terminal device, the first received power is the received power corresponding to the first uplink reference signal being received by the first network device, and the second received power is the received power corresponding to the second uplink reference signal being received by the second network device.

27. According to the method of claim 22, wherein, The transmission power of the second uplink reference signal is determined based on the transmission power of the first uplink reference signal and a first power offset.

28. According to the method of claim 27, wherein, The first power offset is predefined or network-configured.

29. According to the method of any one of claims 22 to 28, wherein, The first network device sends a signaling to the terminal device, including: The first network device sends a first signaling to the terminal device, and the first signaling is used to configure N TCI states. Each TCI state among the N TCI states is associated with a PL RS and a path loss offset, and N is a positive integer.

30. According to the method of claim 29, wherein, When the N TCI states include a first TCI state, and the first TCI state is the indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

31. According to the method of any one of claims 22 to 28, wherein, The first network device sends a signaling to the terminal device, including: The first network device sends a first signaling and a second signaling to the terminal device; the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS and multiple path loss offsets, and N is a positive integer; the second signaling is used to activate M TCI states among the N TCI states and activate a path loss offset for each activated TCI state, and M is a positive integer less than or equal to N.

32. According to the method described in claim 31, wherein, the M TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

33. According to the method described in any one of claims 22 to 28, wherein, the first network device sending a signaling to the terminal device includes: the first network device sends a first signaling and a second signaling to the terminal device; the first signaling is used to configure N TCI states, each of the N TCI states is associated with multiple PL RSs and multiple path loss offsets, and N is a positive integer; the second signaling is used to activate M TCI states among the N TCI states and activate a PL RS and a path loss offset for each activated TCI state, and M is a positive integer less than or equal to N.

34. According to the method described in claim 33, wherein, the M TCI states include a first TCI state. When the first TCI state is the indicated TCI state, the activated PL RS associated with the first TCI state is used by the terminal device to determine the first path loss, and the activated path loss offset associated with the first TCI state is used by the terminal device to determine the first path loss offset.

35. According to the method described in any one of claims 22 to 28, wherein, the first network device sending a signaling to the terminal device includes: the first network device sends a first signaling and a third signaling to the terminal device; the first signaling is used to configure N TCI states, each of the N TCI states is associated with a PL RS, and N is a positive integer; K TCI states among the N TCI states are the indicated TCI states, and K is a positive integer less than N; the third signaling is used to indicate the path loss offsets associated with all the indicated TCI states among the K indicated TCI states or indicate the path loss offsets associated with some of the indicated TCI states among the K indicated TCI states.

36. According to the method described in any one of claims 22 to 28, wherein, the first network device sending a signaling to the terminal device includes: The first network device sends a first signaling and a third signaling to the terminal device; the first signaling is used to configure N TCI states, where N is a positive integer; K of the N TCI states are the indicated TCI states, where K is a positive integer less than N; the third signaling is used to indicate the PL RS and path loss offset associated with all of the indicated TCI states among the K indicated TCI states or to indicate the PL RS and path loss offset associated with some of the indicated TCI states among the K indicated TCI states.

37. The method according to claim 35 or 36, wherein, a first indicated TCI state among the K indicated TCI states has a corresponding relationship with the second network device, the PL RS associated with the first indicated TCI state is used by the terminal device to determine the first path loss, and the path loss offset associated with the first indicated TCI state is used by the terminal device to determine the first path loss offset.

38. The method according to any one of claims 22 to 28, wherein, the first network device sending a signaling to the terminal device includes: the first network device sending a fourth signaling to the terminal device, and the fourth signaling is used to determine the first path loss offset.

39. A power control device, applied to a terminal device, the device comprises: a determination unit, configured to determine a second path loss based on a first path loss and a first path loss offset; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device; based on the second path loss, determine the transmission power of the uplink signal and / or uplink channel sent by the terminal device to the second network device.

40. A power control device, applied to a first network device, the device comprises: a sending unit, configured to send a signaling to the terminal device, and the signaling is used to determine a first path loss offset; the first path loss offset and the first path loss are used by the terminal device to determine a second path loss; the first path loss is the path loss between the terminal device and the first network device, and the second path loss is the path loss between the terminal device and the second network device; the second path loss is used by the terminal device to determine the transmission power of the uplink signal and / or uplink channel sent to the second network device.

41. A communication device, comprises: a processor and a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the communication device executes the method according to any one of claims 1 to 38.

42. A chip, comprises: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 38.

43. A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 38.

44. A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 38.

45. A computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 38.

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