Power control method, apparatus, device, and storage medium

Abstract

The application discloses a power control method and device, equipment and storage medium, and relates to the field of mobile communication. The method comprises the following steps: a terminal receives indication information sent by a network device, and the indication information indicates a power control parameter of uplink transmission corresponding to each transmission reception point (TRP) in multiple TRPs. In the case that multiple TRPs are configured for the terminal, the application provides a method for indicating the power control parameter, and the uplink transmission of each TRP in the multiple TRPs can be controlled in power. Since the power of each TRP is controlled respectively, the interference between the TRPs is reduced, and the channel capacity of the system is also ensured.

Description

Technical Field

[0001] This application relates to the field of mobile communications, and in particular to a power control method, apparatus, device, and storage medium. Background Technology

[0002] In mobile communication systems, network devices and terminals communicate via uplink and downlink channels. When a terminal sends information to a network device via uplink, it needs to control the uplink power. Currently, a scheme has been proposed where the network device configures multiple Transmission Reception Points (TRPs) for the terminal, enabling communication between the network and the terminal. However, determining the uplink power for each TRP remains a critical problem to be solved. Summary of the Invention

[0003] This application provides a power control method, apparatus, device, and storage medium that reduces interference between TRPs while ensuring the system's channel capacity. The technical solution is as follows:

[0004] According to one aspect of this application, a power control method is provided, the method being executed by a terminal, the method comprising:

[0005] The system receives indication information sent by a network device, which indicates the uplink transmission power control parameters for each of the multiple Transmission Receiver Points (TRPs).

[0006] According to one aspect of this application, a power control method is provided, the method being performed by a network device, the method comprising:

[0007] Send indication information to the terminal, the indication information indicating the uplink transmission power control parameters corresponding to each of the multiple Transmission Receiver Points (TRPs).

[0008] According to one aspect of this application, a power control device is provided, the device comprising:

[0009] The receiving module is used to receive indication information sent by the network device, the indication information indicating the uplink transmission power control parameters corresponding to each of the multiple transmission receiving points (TRPs).

[0010] According to one aspect of this application, a power control device is provided, the device comprising:

[0011] The sending module is used to send indication information to the terminal, the indication information indicating the uplink transmission power control parameters corresponding to each of the multiple transmission receiving points (TRPs).

[0012] According to one aspect of this application, a terminal is provided, the terminal comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the power control method as described above.

[0013] According to one aspect of this application, a network device is provided, comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the power control method as described above.

[0014] According to one aspect of this application, a computer-readable storage medium is provided, in which executable program code is stored, which is loaded and executed by a processor to implement the power control method as described above.

[0015] According to one aspect of this application, a chip is provided, the chip including programmable logic circuitry and / or program instructions, for implementing the power control method as described above when the chip is running on a terminal or network device.

[0016] According to one aspect of this application, a computer program product is provided, which, when executed by a processor of a terminal or network device, is used to implement the power control method described above.

[0017] In the power control scheme provided in this application embodiment, when multiple TRPs are configured for the terminal, a method for indicating power control parameters is provided, which can perform power control on the uplink transmission of each of the multiple TRPs. Since the power of each TRP is controlled separately, the interference between TRPs is reduced, and the channel capacity of the system is also guaranteed. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A block diagram of a communication system provided in an exemplary embodiment of this application is shown;

[0020] Figure 2 A block diagram of a communication system provided in an exemplary embodiment of this application is shown;

[0021] Figure 3A flowchart of a power control method provided in an exemplary embodiment of this application is shown;

[0022] Figure 4 A schematic diagram of a MAC-CE format provided in an exemplary embodiment of this application is shown;

[0023] Figure 5 A schematic diagram of another MAC-CE format provided by an exemplary embodiment of this application is shown;

[0024] Figure 6 A schematic diagram of a TCI state configuration provided by an exemplary embodiment of this application is shown;

[0025] Figure 7 A schematic diagram of another MAC-CE format provided by an exemplary embodiment of this application is shown;

[0026] Figure 8 A flowchart of a power control method provided in an exemplary embodiment of this application is shown;

[0027] Figure 9 A flowchart of a power control method provided in an exemplary embodiment of this application is shown;

[0028] Figure 10 A block diagram of a power control device provided in an exemplary embodiment of this application is shown;

[0029] Figure 11 A block diagram of another power control device provided in an exemplary embodiment of this application is shown;

[0030] Figure 12 A schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application is shown. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. Unless otherwise indicated, the same numerals in different drawings denote the same or similar elements in the following description relating to the drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0033] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0034] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, for example, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0035] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, data stored, data displayed, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0036] The application scenarios of this application will be described below:

[0037] Figure 1 A block diagram of a communication system provided in an exemplary embodiment of this application is shown. The communication system may include a terminal 10 and a network device 20.

[0038] The number of terminals 10 is typically multiple, and one or more terminals 10 can be distributed within the cell managed by each network device 20. Terminals 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile station (MS), etc. For ease of description, in this embodiment, the devices mentioned above are collectively referred to as terminals.

[0039] Network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal 10. For ease of description, in this embodiment, the device providing wireless communication functionality to terminal 10 is collectively referred to as a network device. Network device 20 and terminal 10 can establish a connection via an air interface, thereby communicating through this connection, including signaling and data exchange. There can be multiple network devices 20, and two adjacent network devices 20 can communicate via wired or wireless means. Terminal 10 can switch between different network devices 20, that is, establish connections with different network devices 20.

[0040] The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the name of the device with network equipment functions may differ; for example, in a 5G NR system, it is called gNodeB or gNB. As communication technologies evolve, the name "network device" may change.

[0041] In some embodiments, a network device may include one or more Transmission Reception Points (TRPs).

[0042] For example, such as Figure 2 As shown, a network device is configured with two TRPs, namely TRP1 and TRP2. The network device establishes a communication connection with the terminal through these two TRPs, and thus the network device can communicate with the terminal through the two TRPs.

[0043] Figure 3 The flowchart illustrates a power control method provided in an exemplary embodiment of this application, which can be applied, for example, to... Figure 1 In the terminal and network device shown, the method includes at least some of the following:

[0044] Step 301: The network device sends an indication message to the terminal, which indicates the uplink transmission power control parameters for each of the multiple TRPs.

[0045] In this embodiment, the network device and the terminal can communicate. For the terminal, sending information to the network device refers to uplink transmission. The terminal can perform uplink transmission through multiple TRPs configured on the network device, and each TRP has its own corresponding uplink transmission power. That is, when the terminal performs uplink transmission through different TRPs, it will use different power levels to send information.

[0046] When the terminal performs uplink transmission, it performs uplink transmission according to the uplink transmission power corresponding to each TRP. The network device needs to send indication information to the terminal, which indicates the uplink transmission power control parameters corresponding to each of the multiple TRPs.

[0047] In some embodiments, the uplink power control parameters refer to the uplink channel power control parameters, or the uplink signal power control parameters; this application embodiment does not limit this. Alternatively, the uplink power control parameters in this application embodiment can be replaced with the uplink channel power control parameters. Or, the uplink power control parameters in this application embodiment can be replaced with the uplink signal power control parameters.

[0048] Optionally, the uplink transmission includes at least one of SRS (Sound Resource Signal), PUSCH (Physical Uplink Shared Channel), and PUCCH (Physical Uplink Control Channel).

[0049] Step 302: The terminal receives the indication information sent by the network device, which indicates the uplink transmission power control parameters corresponding to each of the multiple TRPs.

[0050] In this embodiment of the application, when the terminal receives the indication information sent by the network device, it can determine the uplink transmission power control parameters corresponding to each TRP based on the indication information, and then perform uplink transmission with the corresponding TRP based on the power corresponding to the determined uplink transmission power control parameters.

[0051] It should be noted that the steps performed by the network device can form a separate embodiment, and the steps performed by the terminal can also form a separate embodiment; this application does not limit this.

[0052] In the embodiments of this application, when multiple TRPs are configured for a terminal, a method for indicating power control parameters is provided. This method can control the uplink transmission power of each of the multiple TRPs. Since the power of each TRP is controlled separately, interference between TRPs is reduced, and the channel capacity of the system is also guaranteed.

[0053] exist Figure 3 Based on the illustrated embodiment, the power control parameters for uplink transmission corresponding to each TRP indicated by the indication information include open-loop power parameters and closed-loop power parameters.

[0054] The open-loop power parameter is used to compensate for signal loss caused by path loss and shadow fading, while the closed-loop power parameter refers to the power adjustment value indicated by the second uplink transmission of the terminal based on the uplink power measured by the network device according to the first uplink transmission.

[0055] The trigger time of the first uplink transmission is before the trigger time of the second uplink transmission. That is, the first uplink transmission is the uplink transmission performed by the terminal before the current uplink transmission, while the second uplink transmission is the uplink transmission performed by the terminal currently or subsequently. In addition, this closed-loop power parameter can also be understood as the power adjustment value indicated by the terminal for the current uplink transmission, which is the uplink power measured by the network device based on the previous uplink transmission.

[0056] In this embodiment of the application, the indication information indicates the open-loop power parameters and the closed-loop power parameters. The terminal can determine the indicated open-loop power parameters and the closed-loop power parameters based on the indication information, and then determine the uplink transmission power based on the open-loop power parameters and the closed-loop power parameters.

[0057] In some embodiments, the open-loop power parameter includes an open-loop receiver power target value, a partial path loss compensation factor, a closed-loop index, and a path loss reference signal. Based on the open-loop and closed-loop power parameters, the uplink transmission power can be determined using the following formula:

[0058] P = min[P] CMAX ,{A}+{B}+{C}]

[0059] Among them, P CMAX This refers to the maximum allowed uplink transmission power. A refers to the open-loop portion, calculated from the open-loop power parameters P0, alpha, and PL. P0 is the target power value at the open-loop receiver, alpha is a partial path loss compensation factor, and PL is the estimated downlink path loss. B refers to the closed-loop portion, determined by the closed-loop power parameters, i.e., the power control adjustment state value, used to dynamically adjust the power of any uplink transmission by the terminal. C refers to other adjustment quantities, which are associated with resource allocation, link adaptation, and other information. The open-loop and closed-loop portions need to be indicated through indication information.

[0060] In some embodiments, the open-loop power parameter is indicated by the TCI (Transmission Configuration Indication) status, and there is a different relationship between the TCI status and the open-loop power parameter.

[0061] Optionally, the TCI state can also be represented by a TCI state, which is not limited in this embodiment. Furthermore, the TCI state in this embodiment can be a joint TCI state or an uplink TCI state.

[0062] In some embodiments, the open-loop power parameters and TCI states have a one-to-one correspondence.

[0063] In the embodiments of this application, the open-loop power parameters and TCI states have a one-to-one correspondence, that is, one TCI state corresponds to one type of open-loop power parameter.

[0064] Optionally, the network device configures the correspondence between open-loop power parameters and TCI status for the terminal.

[0065] For example, network devices configure the correspondence between open-loop power parameters and TCI states for terminals by configuring a TCI state list.

[0066] It should be noted that different TCI states correspond to different open-loop power parameters, or different TCI states correspond to the same open-loop power parameters.

[0067] Based on the above embodiments, the indication information can use multiple TCI fields or one TCI field to indicate the open-loop power parameters corresponding to different TRPs. The following will explain these two cases.

[0068] The first type: The indication information indicates multiple TCI fields, and each TCI field indicates a TCI status.

[0069] In this embodiment of the application, the network device can indicate the uplink transmission power control parameters corresponding to each of the multiple TRPs through indication information. The uplink transmission power control parameters include open-loop power parameters. The network device can set multiple TCI fields in the indication information, each TCI field indicating a TCI state, and each TCI state associated with an open-loop power parameter.

[0070] In some embodiments, the indication information is DCI 1_1 (Downlink Control Information) or DCI 1_2.

[0071] In some embodiments, each TCI state is associated with an open-loop power parameter of a TRP, and the TCI state indicated by the TCI field corresponds to one of a plurality of activated TCI states.

[0072] In this embodiment, there is a one-to-one correspondence between TCI states and open-loop power parameters. That is, each TCI state corresponds to one open-loop power parameter, and each TCI state is associated with an open-loop power parameter corresponding to a TRP. The open-loop power parameter corresponding to each TRP can be indicated through the TCI field. Furthermore, each TCI state indicated by the multiple indication fields in the indication information corresponds to one of the multiple activated TCI states.

[0073] Optionally, for each TCI field, each code point in that TCI field corresponds to a TCI state. Each TCI field includes at least one bit, and this at least one bit can indicate multiple code points, with different code points indicating different TCI states. Alternatively, a code point can also be understood as a numerical value indicated by at least one bit; that is, at least one bit can indicate multiple numerical values, with different numerical values ​​corresponding to different TCI states.

[0074] For example, if a TCI field consists of 3 bits, then the TCI field can indicate 8 values. In other words, the network device can use the TCI field to indicate one of the 8 TCI states.

[0075] In some embodiments, the network device informs the terminal of the activated TCI status via MAC-CE (MAC Control Element).

[0076] The network device sends multiple first MAC-CEs to the terminal, and the terminal receives multiple first MAC-CEs, wherein each first MAC-CE is used to activate multiple TCI states corresponding to a TCI field.

[0077] In this embodiment, the network device activates multiple TCI states corresponding to a TCI field in advance via a first MAC-CE, and then indicates a TCI state corresponding to that TCI field via indication information. Furthermore, the network device sends multiple first MAC-CEs to the terminal, and each first MAC-CE activates multiple TCI states corresponding to a TCI field. That is, one first MAC-CE is used to activate multiple TCI states corresponding to a TCI field corresponding to a TRP, and multiple first MAC-CEs are sent to activate multiple TCI states corresponding to multiple TCI fields.

[0078] For example, the first MAC-CE includes status information corresponding to each TCI state. A status value of 1 indicates that the corresponding TCI state is active, while a status value of 0 indicates that the corresponding TCI state is inactive. It also includes an identifier for distinguishing TCI fields, indicating which TCI field the multiple active TCI states of the first MAC-CE correspond to. For example, if the identifier is 0, it corresponds to the first TCI field, and if the identifier is 1, it corresponds to the second TCI field.

[0079] For example, Figure 4 and Figure 5 The formats of the first MAC-CE are shown respectively. Both formats of the first MAC-CE can activate multiple TCI states corresponding to the TCI field. For example... Figure 4 As shown, T is an identifier. A first MAC-CE includes status information for N TCI states, and the status information corresponding to each TCI state indicates whether that TCI state is active. Figure 4 Each line in the table contains status information for 8 TCI states. N / 8 lines are used to configure whether N TCI states are activated. Alternatively, as shown below... Figure 5 As shown, a first MAC-CE includes M TCI states, and one row corresponds to one TCI state. All M TCI states are active TCI states.

[0080] It should be noted that in this embodiment, the number of TCI states corresponding to each TCI field activated by the network device is related to the number of bits in the TCI field. For example, if each TCI field includes 3 bits, indicating a maximum of 8 TCI states, then the network device can activate a maximum of 8 TCI states for each TCI field. Conversely, if each TCI field includes 2 bits, indicating a maximum of 4 TCI states, then the network device can activate a maximum of 4 TCI states for each TCI field. Alternatively, it can be understood that the network device activates TCI states with a number of code points less than or equal to the number of TCI fields.

[0081] In some embodiments, before activating a TCI state through the first MAC-CE, the network device needs to configure multiple TCI states for the terminal so that the network device can activate some of the multiple TCI states through the first MAC-CE.

[0082] Optionally, the network device sends a first configuration signaling to the terminal, and the terminal receives the first configuration signaling. The first configuration signaling is used to configure the TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with the open-loop power parameter.

[0083] In this embodiment of the application, the network device configures a TCI state list containing multiple TCI states for the terminal through a first configuration signaling, and informs the terminal of each TCI state through the TCI state list.

[0084] In some embodiments, the first configuration signaling is RRC signaling or other higher-level signaling, which is not limited in this application embodiment.

[0085] Optionally, one TCI state in the TCI state list configured by the first configuration information corresponds to one open-loop power parameter.

[0086] For example, such as Figure 6 As shown, the TCI state list includes multiple TCI states, and each TCI state corresponds to an element, which is also a corresponding open-loop power parameter. For example, TCI state 1 corresponds to element 1, which is also the open-loop power parameter 1. TCI state 2 corresponds to element 2, which is also the open-loop power parameter 2.

[0087] It should be noted that the embodiments in this application are only illustrated by the example of indication information indicating multiple TCI states through multiple TCI fields. In another embodiment, the indication information indicates multiple TCI states, and each TCI state corresponds to a TRP.

[0088] In this embodiment, the indication information is actually for a TRP that a TCI state has been activated. The TCI state can be directly determined as the TCI state corresponding to the TRP without further indication.

[0089] In some embodiments, the indication information includes a plurality of second MAC-CEs, each second MAC-CE being used to activate a TCI state.

[0090] In this embodiment, the indication information includes multiple second MAC-CEs. That is, each of the multiple second MAC-CEs can directly activate a TCI state, and thus the activated TCI state can be directly used as the TCI state corresponding to a TRP. Each TCI state activated by the multiple second MAC-CEs corresponds to a TRP. The open-loop power parameter associated with each activated TCI state is used to determine the uplink transmission power of the corresponding TRP.

[0091] Optionally, the network device sends a first configuration signaling to the terminal, and the terminal receives the first configuration signaling. The first configuration signaling is used to configure the TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with the open-loop power parameter.

[0092] The first configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0093] The second type: The indication information indicates a TCI field, the TCI field indicates a TCI state group, and the TCI state group includes multiple TCI states.

[0094] In this embodiment of the application, the network device can indicate the uplink power control parameters corresponding to each TRP in a plurality of TRPs through indication information. The uplink power control parameters include open-loop power parameters. The network device can then indicate a TCI state group through indication information. The TCI state group includes a plurality of TCI states. One TCI field indicates one TCI state group. Each TCI state in the plurality of TCI states included in the TCI state group is associated with an open-loop power parameter.

[0095] The number of TCI states included in a TCI state group is the same as the number of TRPs.

[0096] In some embodiments, the indication information is DCI 1_1 or DCI 1_2.

[0097] In some embodiments, each of the plurality of TCI states is associated with an open-loop power parameter of a TRP, and the TCI field indicates a TCI state group corresponding to one of the plurality of activated TCI state groups.

[0098] In this embodiment, there is a one-to-one correspondence between the TCI state and the open-loop power parameter. That is, each TCI state is associated with one open-loop power parameter, and the open-loop power parameter indicated by each TCI state corresponds to the open-loop power parameter of a TRP. The open-loop power parameter corresponding to each TRP can be indicated through this indication information. Furthermore, the TCI state group indicated by the TCI field in the indication information corresponds to one of the multiple activated TCI state groups.

[0099] Optionally, for the TCI field in the indication information, the TCI field uses code points to indicate TCI state groups. The TCI field includes at least one bit, and at least one bit can indicate multiple code points, with different code points indicating different TCI state groups. Alternatively, a code point can also be understood as a numerical value indicated by at least one bit; that is, at least one bit can indicate multiple numerical values, with different numerical values ​​corresponding to different TCI state groups.

[0100] For example, if a TCI field consists of 3 bits, then the TCI field can indicate 8 values. In other words, the network device can use the TCI field to indicate one of the 8 TCI state groups.

[0101] In some embodiments, the network device informs the terminal of the activated TCI status group via MAC-CE.

[0102] In this process, the network device sends a third MAC-CE to the terminal, and the terminal receives the third MAC-CE. The third MAC-CE is used to activate multiple TCI state groups corresponding to the corresponding TCI domain.

[0103] In this embodiment of the application, the network device activates multiple TCI state groups corresponding to a TCI domain in advance through a third MAC-CE, and then indicates a TCI state group indicated by the TCI domain through indication information.

[0104] For example, let's take the case where each TCI state group includes two TCI states as an example. Figure 7 As shown, this third MAC-CE includes 2N TCI states, with each pair of TCI states forming a TCI state group, where the TCI state ID is... 0,1 (Identity document, identity identifier), TCI status ID 0,2 For TCI state group 0, TCI state ID 1,1 TCI Status ID 1,2 For TCI state group 1, and so on, TCI state ID N,1 TCI Status ID N,2 Let N be the TCI state group.

[0105] It should be noted that in this embodiment, the number of TCI state groups corresponding to the TCI field activated by the network device is related to the number of bits in the TCI field. For example, if the TCI field includes 3 bits, indicating a maximum of 8 TCI state groups, then the network device will activate a maximum of 8 TCI state groups for the TCI field. If the TCI field includes 2 bits, indicating a maximum of 4 TCI state groups, then the network device will activate a maximum of 4 TCI state groups for the TCI field. Alternatively, it can be understood that the network device activates TCI states with a number of code points less than or equal to the number of TCI points included in the TCI field.

[0106] In some embodiments, before a network device activates a TCI state group through a third MAC-CE, it needs to configure multiple TCI states for the terminal so that the network device can activate some of the multiple TCI states through the third MAC-CE.

[0107] Optionally, the network device sends a second configuration signaling to the terminal, and the terminal receives the second configuration signaling. The second configuration signaling is used to configure the TCI status list, which contains multiple TCI statuses.

[0108] In this embodiment of the application, the network device configures a TCI state list containing multiple TCI states for the terminal through a second configuration signaling. By configuring multiple TCI states for the terminal through this TCI state list, the network device can activate some of the configured multiple TCI states through a third MAC-CE, and these TCI states belong to the same or different TCI state groups.

[0109] It should be noted that the embodiments in this application are only illustrated by the example of indicating a TCI state group including multiple TCI states through a single TCI field. In another embodiment, the indication information directly indicates a TCI state group, which includes multiple TCI states.

[0110] In this embodiment of the application, the indication information sent by the network device actually activates a TCI state group. Each TCI state in the multiple TCI states included in the TCI state group corresponds to a TRP. The TCI states included in the TCI state group can be directly determined as the TCI states corresponding to the TRPs without further indication.

[0111] In some embodiments, the indication information is a fourth MAC-CE, which is used to activate a TCI state group.

[0112] In this embodiment of the application, the indication information is the fourth MAC-CE, that is, a TCI state group is directly activated through the fourth MAC-CE, and then the TCI state included in the activated TCI state group can be directly used as the TCI state corresponding to the TRP.

[0113] Optionally, the network device sends a second configuration signaling to the terminal, and the terminal receives the second configuration signaling. The second configuration signaling is used to configure the TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with the open-loop power parameter.

[0114] The second configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0115] It should be noted that, based on the above embodiments, the open-loop power parameters include at least one of the following:

[0116] (1) Target power value of open-loop receiver.

[0117] (2) Partial road loss compensation factor.

[0118] (3) Closed-loop index.

[0119] (4) Road loss reference signal.

[0120] In the solution provided in this application, multiple TCI states are indicated to the terminal to specify the open-loop power parameters when performing uplink transmission with different TRPs, thereby enabling power control for the uplink transmission of each of the multiple TRPs. Since the power of each TRP is controlled separately, interference between TRPs is reduced, and the system's channel capacity is also guaranteed.

[0121] Based on the above embodiments, which illustrate the configuration of open-loop power parameters by configuring TCI states, another embodiment does not have a one-to-one correspondence between TCI states and open-loop power control parameters. The network device can directly configure open-loop power parameters for each TRP using a parameter set. In other words, the indication information sent by the network device indicates the open-loop power parameters corresponding to each TRP by indicating a parameter set.

[0122] In some embodiments, the indication information indicates multiple parameter sets, each parameter set indicating the open-loop power parameters corresponding to a TRP.

[0123] In this embodiment of the application, the network device sends indication information to the terminal. The indication information indicates multiple parameter sets, and each parameter set indicates the open-loop power parameter corresponding to a TRP. Therefore, after receiving the indication information sent by the network device, the terminal can determine multiple parameter sets according to the indication information, and then determine the open-loop power parameter of the TRP corresponding to each parameter set from the multiple parameter sets.

[0124] Optionally, the indication information is carried in RRC (Radio Resource Control) or MAC-CE.

[0125] In some embodiments, the terminal can determine the TRP corresponding to each parameter set in a predefined manner, that is, by implicitly indicating the TRP corresponding to each parameter set. Alternatively, the indication information may also carry an identifier of the TRP corresponding to each parameter set, that is, by explicitly indicating the TRP corresponding to each parameter set.

[0126] For example, if the indication information specifies multiple parameter sets, the terminal can determine the corresponding TRP based on the location of each parameter set. For instance, the first parameter set might be the open-loop power parameters for the uplink transmission corresponding to the first TCI state, and the second parameter set might be the open-loop power parameters for the uplink transmission corresponding to the second TCI state.

[0127] For example, when sending indication information via RRC or MAC-CE, the indication information includes an identifier corresponding to the parameter set, which is used to indicate the TRP corresponding to the parameter set.

[0128] For example, identifier 1 corresponding to the first parameter set indicates that the first parameter set corresponds to the first TRP, and identifier 2 corresponding to the second parameter set indicates that the second parameter set corresponds to the second TRP.

[0129] The open-loop power parameter includes at least one of the following:

[0130] (1) Target power value of open-loop receiver.

[0131] (2) Partial road loss compensation factor.

[0132] (3) Closed-loop index.

[0133] In the solution provided in this application embodiment, the open-loop power parameters corresponding to different TRPs are indicated to the terminal through a parameter set. Power control can be performed on the uplink transmission of each TRP among multiple TRPs. Since the power of each TRP is controlled separately, the interference between TRPs is reduced, and the channel capacity of the system is also guaranteed.

[0134] Based on the above embodiments, the network device can also indicate the closed-loop power parameters corresponding to each TRP through indication information, and can indicate the closed-loop power parameters by setting multiple TPC (Transmit Power Control) fields or by using multiple closed-loop power parameter sets. The following describes these two cases.

[0135] The first type: The indication information includes multiple TPC fields, and each TPC field indicates the closed-loop power parameter corresponding to a TRP.

[0136] In this embodiment of the application, the network device can indicate the uplink transmission power corresponding to each TRP among multiple TRPs through indication information. Since the uplink transmission power needs to be determined by the closed-loop power parameter, the network device can set multiple TPC fields in the indication information, and each TPC field corresponds to the closed-loop power parameter of a TRP.

[0137] In some embodiments, the indication information is at least one of DCI 0_1, DCI 0_2, DCI 1_1, DCI 1_2, and DCI 2_2.

[0138] For example, as shown in Table 1, different values ​​in the TPC domain correspond to different closed-loop power parameters.

[0139] Table 1

[0140] 0 -1 1 0 2 1 3 3

[0141] Referring to Table 1, different fields (code points) of each TPC field correspond to different closed-loop power parameters. Furthermore, Table 1 in this embodiment is merely illustrative; TPC field fields may also correspond to other closed-loop power parameters, and this embodiment does not impose limitations.

[0142] The second type: The indication information indicates the set of closed-loop power parameters, which includes multiple closed-loop power parameters.

[0143] In this embodiment of the application, the indication information indicates the closed-loop power parameter corresponding to each TRP among multiple TRPs by indicating a set of closed-loop power parameters. That is, the set of closed-loop power parameters includes multiple closed-loop power parameters, each closed-loop power parameter corresponds to one TRP, and multiple closed-loop power parameters correspond to multiple TRPs.

[0144] Optionally, the indication information includes a TPC field, meaning that multiple closed-loop power parameters can be indicated through a single TPC field, thereby allowing the terminal to determine the closed-loop power parameters corresponding to each TRP.

[0145] For example, as shown in Table 2, different values ​​in the TPC domain correspond to different closed-loop power parameters.

[0146] Table 2

[0147]

[0148] In some embodiments, the network device needs to first configure the correspondence between indication information and closed-loop power parameter set for the terminal. Then, the network device sends the correspondence between indication information and closed-loop power parameter set to the terminal. The terminal receives the correspondence between indication information and closed-loop power parameter set sent by the network device. The closed-loop power parameter set includes multiple closed-loop power parameters.

[0149] The solution provided in this application expands the methods for indicating closed-loop power parameters by setting multiple TPC fields or indicating a set of closed-loop power parameters in the indication information to indicate different TRPs to the terminal. Furthermore, when multiple TRPs are configured for the terminal, a new power control method is provided, which can perform power control on the uplink transmission of each of the multiple TRPs. Since the power of each TRP is controlled separately, interference between TRPs is reduced, and the channel capacity of the system is also guaranteed.

[0150] Figure 8 The flowchart illustrates a power control method provided in an exemplary embodiment of this application, which can be applied, for example, to... Figure 1 In the terminal shown, the method includes at least some of the following:

[0151] Step 801: The terminal receives the indication information sent by the network device, which indicates the uplink transmission power control parameters corresponding to each of the multiple TRPs.

[0152] In this embodiment, the network device and the terminal can communicate. For the terminal, sending information to the network device refers to uplink transmission. The terminal can perform uplink transmission through multiple TRPs configured on the network device, and each TRP has its own corresponding uplink transmission. That is, when the terminal performs uplink transmission through different TRPs, it will use different power levels to send information.

[0153] Once the terminal receives the indication information sent by the network device, it can determine the uplink transmission power control parameters corresponding to each TRP based on the indication information, and then perform uplink transmission through the corresponding TRP based on the determined uplink transmission power control parameters.

[0154] When the terminal performs uplink transmission, it performs uplink transmission according to the uplink transmission power corresponding to each TRP. The network device needs to send indication information to the terminal, which indicates the uplink transmission power control parameters corresponding to each of the multiple TRPs.

[0155] In some embodiments, the uplink power control parameters refer to the uplink channel power control parameters, or the uplink signal power control parameters; this application embodiment does not limit this. Alternatively, the uplink power control parameters in this application embodiment can be replaced with the uplink channel power control parameters. Or, the uplink power control parameters in this application embodiment can be replaced with the uplink signal power control parameters.

[0156] Optionally, the uplink transmission includes at least one of SRS (Sound Resource Signal), PUSCH (Physical Uplink Shared Channel), and PUCCH (Physical Uplink Control Channel).

[0157] In some embodiments, the uplink power control parameters for each TRP include open-loop power parameters and closed-loop power parameters.

[0158] Among them, the open-loop power parameter is used to compensate for signal loss caused by path loss and shadow fading, while the closed-loop power parameter refers to the power adjustment value indicated by the terminal for the second uplink transmission based on the uplink power measured by the network device based on the first uplink transmission.

[0159] The trigger time of the first uplink transmission is before the trigger time of the second uplink transmission. That is, the first uplink transmission is the uplink transmission performed by the terminal before the current uplink transmission, while the second uplink transmission is the uplink transmission performed by the terminal currently or subsequently. In addition, this closed-loop power parameter can also be understood as the power adjustment value indicated by the terminal for the current uplink transmission, which is the uplink power measured by the network device based on the previous uplink transmission.

[0160] In this embodiment of the application, the indication information indicates the open-loop power parameters and the closed-loop power parameters. The terminal can determine the indicated open-loop power parameters and the closed-loop power parameters based on the indication information, and then determine the uplink transmission power based on the open-loop power parameters and the closed-loop power parameters.

[0161] In some embodiments, the open-loop power parameter includes an open-loop receiver power target value, a partial path loss compensation factor, a closed-loop index, and a path loss reference signal. Based on the open-loop and closed-loop power parameters, the uplink transmission power can be determined using the following formula:

[0162] P = min[P] CMAX ,{A}+{B}+{C}]

[0163] Among them, P CMAX This refers to the maximum allowed uplink transmission power. A refers to the open-loop portion, calculated from the open-loop power parameters P0, alpha, and PL. P0 is the target power value at the open-loop receiver, alpha is a partial path loss compensation factor, and PL is the estimated downlink path loss. B refers to the closed-loop portion, determined by the closed-loop power parameters, i.e., the power control adjustment state value, used to dynamically adjust the power of any uplink transmission by the terminal. C refers to other adjustment quantities, which are associated with resource allocation, link adaptation, and other information. The open-loop and closed-loop portions need to be indicated through indication information.

[0164] In some embodiments, the open-loop power parameters and the Transmission Indication Configuration (TCI) status are in a one-to-one correspondence.

[0165] Optionally, the open-loop power parameter is indicated by the TCI (Transmission Configuration Indication) status, and there is a different relationship between the TCI status and the open-loop power parameter.

[0166] Optionally, the TCI state can also be represented by a TCI state, which is not limited in this embodiment. Furthermore, the TCI state in this embodiment can be a joint TCI state or an uplink TCI state.

[0167] In the embodiments of this application, the open-loop power parameters and TCI states have a one-to-one correspondence, that is, one TCI state corresponds to one type of open-loop power parameter.

[0168] Optionally, the network device configures the correspondence between open-loop power parameters and TCI status for the terminal.

[0169] For example, network devices configure the correspondence between open-loop power parameters and TCI states for terminals by configuring a TCI state list.

[0170] In some embodiments, the indication information indicates multiple TCI fields, and each TCI field indicates a TCI status.

[0171] In the embodiments of this application, the open-loop power parameters and TCI states have a one-to-one correspondence, that is, one TCI state corresponds to one type of open-loop power parameter.

[0172] In this embodiment, there is a one-to-one correspondence between TCI states and open-loop power parameters. That is, each TCI state corresponds to one open-loop power parameter, and each TCI state is associated with an open-loop power parameter corresponding to a TRP. The open-loop power parameter corresponding to each TRP can be indicated through the TCI field. Furthermore, each TCI state indicated by the multiple indication fields in the indication information corresponds to one of the multiple activated TCI states.

[0173] Optionally, for each TCI field, each code point in that TCI field corresponds to a TCI state. Each TCI field includes at least one bit, and this at least one bit can indicate multiple code points, with different code points indicating different TCI states. Alternatively, a code point can also be understood as a numerical value indicated by at least one bit; that is, at least one bit can indicate multiple numerical values, with different numerical values ​​corresponding to different TCI states.

[0174] For example, if a TCI field consists of 3 bits, then the TCI field can indicate 8 values. In other words, the network device can use the TCI field to indicate one of the 8 TCI states.

[0175] In some embodiments, the terminal receives a plurality of first MAC-CEs, wherein each first MAC-CE is used to activate a plurality of TCI states corresponding to a TCI domain.

[0176] In this embodiment, the network device activates multiple TCI states corresponding to a TCI field in advance via a first MAC-CE, and then indicates a TCI state corresponding to that TCI field via indication information. Furthermore, the network device sends multiple first MAC-CEs to the terminal, and each first MAC-CE activates multiple TCI states corresponding to a TCI field. That is, one first MAC-CE is used to activate multiple TCI states corresponding to a TRP's TCI field, and multiple first MAC-CEs are sent to indicate the activation of multiple TCI states corresponding to multiple TCI fields.

[0177] For example, the first MAC-CE includes status information corresponding to each TCI state. A status value of 1 indicates that the corresponding TCI state is active, while a status value of 0 indicates that the corresponding TCI state is inactive. It also includes an identifier for distinguishing TCI fields, indicating which TCI field the multiple active TCI states of the first MAC-CE correspond to. For example, if the identifier is 0, it corresponds to the first TCI field, and if the identifier is 1, it corresponds to the second TCI field.

[0178] For example, Figure 4 and Figure 5 The formats of the first MAC-CE are shown respectively. Both formats of the first MAC-CE can activate multiple TCI states corresponding to the TCI field. For example... Figure 4 As shown, T is an identifier. A first MAC-CE includes status information for N TCI states, and the status information corresponding to each TCI state indicates whether that TCI state is active. Figure 4 Each line in the table contains status information for 8 TCI states. N / 8 lines are used to configure whether N TCI states are activated. Alternatively, as shown below... Figure 5 As shown, a first MAC-CE includes M TCI states, and one row corresponds to one TCI state. All M TCI states are active TCI states.

[0179] It should be noted that in this embodiment, the number of TCI states corresponding to each TCI field activated by the network device is related to the number of bits in the TCI field. For example, if each TCI field includes 3 bits, indicating a maximum of 8 TCI states, then the network device can activate a maximum of 8 TCI states for each TCI field. Conversely, if each TCI field includes 2 bits, indicating a maximum of 4 TCI states, then the network device can activate a maximum of 4 TCI states for each TCI field. Alternatively, it can be understood that the network device activates TCI states with a number of code points less than or equal to the number of TCI fields.

[0180] In some embodiments, before activating a TCI state through the first MAC-CE, the network device needs to configure multiple TCI states for the terminal so that the network device can activate some of the multiple TCI states through the first MAC-CE.

[0181] Optionally, the network device sends a first configuration signaling to the terminal, and the terminal receives the first configuration signaling. The first configuration signaling is used to configure the TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with the open-loop power parameter.

[0182] In this embodiment of the application, the network device configures a TCI state list containing multiple TCI states for the terminal through a first configuration signaling, and informs the terminal of each TCI state through the TCI state list.

[0183] In some embodiments, the first configuration signaling is RRC signaling or other higher-level signaling, which is not limited in this application embodiment.

[0184] Optionally, one TCI state in the TCI state list configured by the first configuration information corresponds to one open-loop power parameter.

[0185] For example, such as Figure 6 As shown, the TCI state list includes multiple TCI states, and each TCI state corresponds to an element, which is also a corresponding open-loop power parameter. For example, TCI state 1 corresponds to element 1, which is also the open-loop power parameter 1. TCI state 2 corresponds to element 2, which is also the open-loop power parameter 2.

[0186] In some embodiments, the indication information indicates multiple TCI states, each TCI state corresponding to a TRP.

[0187] In this embodiment, the indication information is actually for a TRP that a TCI state has been activated. The TCI state can be directly determined as the TCI state corresponding to the TRP without further indication.

[0188] In some embodiments, the indication information includes a plurality of second MAC-CEs, each second MAC-CE being used to activate a TCI state.

[0189] In this embodiment, the indication information includes multiple second MAC-CEs. That is, each of the multiple second MAC-CEs can directly activate a TCI state, and thus the activated TCI state can be directly used as the TCI state corresponding to a TRP. Each TCI state activated by the multiple second MAC-CEs corresponds to a TRP. The open-loop power parameter associated with each activated TCI state is used to determine the uplink transmission power of the corresponding TRP.

[0190] Optionally, the terminal receives a first configuration signaling, which is used to configure a TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with an open-loop power parameter.

[0191] The first configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0192] In some embodiments, the indication information indicates a TCI field, the TCI field indicates a TCI state group, and the TCI state group includes multiple TCI states.

[0193] In this embodiment of the application, the network device can indicate the uplink power control parameters corresponding to each TRP in a plurality of TRPs through indication information. The uplink power control parameters include open-loop power parameters. The network device can then indicate a TCI state group through indication information. The TCI state group includes a plurality of TCI states. One TCI field indicates one TCI state group. Each TCI state in the plurality of TCI states included in the TCI state group is associated with an open-loop power parameter.

[0194] The number of TCI states included in a TCI state group is the same as the number of TRPs.

[0195] In some embodiments, the indication information is DCI 1_1 or DCI 1_2.

[0196] In some embodiments, each of the plurality of TCI states is associated with an open-loop power parameter of a TRP, and the TCI field indicates a TCI state group corresponding to one of the plurality of activated TCI state groups.

[0197] In this embodiment, there is a one-to-one correspondence between the TCI state and the open-loop power parameter. That is, each TCI state is associated with one open-loop power parameter, and the open-loop power parameter indicated by each TCI state corresponds to the open-loop power parameter of a TRP. The open-loop power parameter corresponding to each TRP can be indicated through this indication information. Furthermore, the TCI state group indicated by the TCI field in the indication information corresponds to one of the multiple activated TCI state groups.

[0198] Optionally, for the TCI field in the indication information, the TCI field uses code points to indicate TCI state groups. The TCI field includes at least one bit, and at least one bit can indicate multiple code points, with different code points indicating different TCI state groups. Alternatively, a code point can also be understood as a numerical value indicated by at least one bit; that is, at least one bit can indicate multiple numerical values, with different numerical values ​​corresponding to different TCI state groups.

[0199] For example, if a TCI field consists of 3 bits, then the TCI field can indicate 8 values. In other words, the network device can use the TCI field to indicate one of the 8 TCI state groups.

[0200] In some embodiments, the network device informs the terminal of the activated TCI status group via MAC-CE.

[0201] In this process, the network device sends a third MAC-CE to the terminal, and the terminal receives the third MAC-CE. The third MAC-CE is used to activate multiple TCI state groups corresponding to the corresponding TCI domain.

[0202] In this embodiment of the application, the network device activates multiple TCI state groups corresponding to a TCI domain in advance through a third MAC-CE, and then indicates a TCI state group indicated by the TCI domain through indication information.

[0203] For example, let's take the case where each TCI state group includes two TCI states as an example. Figure 7 As shown, this third MAC-CE includes 2N TCI states, with each pair of TCI states forming a TCI state group, where the TCI state ID is... 0,1 TCI Status ID 0,2 For TCI state group 0, TCI state ID 1,1 TCI Status ID 1,2 For TCI state group 1, and so on, TCI state ID N,1 TCI Status ID N,2 Let N be the TCI state group.

[0204] It should be noted that in this embodiment, the number of TCI state groups corresponding to the TCI field activated by the network device is related to the number of bits in the TCI field. For example, if the TCI field includes 3 bits, indicating a maximum of 8 TCI state groups, then the network device will activate a maximum of 8 TCI state groups for the TCI field; if the TCI field includes 2 bits, indicating a maximum of 4 TCI state groups, then the network device will activate a maximum of 4 TCI state groups for the TCI field. Alternatively, it can be understood that the network device activates TCI states with a number of code points less than or equal to the number of TCI points included in the TCI field.

[0205] In some embodiments, before a network device activates a TCI state group through a third MAC-CE, it needs to configure multiple TCI states for the terminal so that the network device can activate some of the multiple TCI states through the third MAC-CE.

[0206] Optionally, the terminal receives a second configuration signaling, which is used to configure a TCI status list, which contains multiple TCI statuses.

[0207] In this embodiment of the application, the network device configures a TCI state list containing multiple TCI states for the terminal through a second configuration signaling. By configuring multiple TCI states for the terminal through this TCI state list, the network device can activate some of the configured multiple TCI states through a third MAC-CE, and these TCI states belong to the same TCI state group.

[0208] In some embodiments, the indication information indicates a TCI state group, which includes multiple TCI states.

[0209] In this embodiment of the application, the indication information sent by the network device actually activates a TCI state group. Each TCI state in the multiple TCI states included in the TCI state group corresponds to a TRP. The TCI states included in the TCI state group can be directly determined as the TCI states corresponding to the TRPs without further indication.

[0210] In some embodiments, the indication information is a fourth MAC-CE, which is used to activate a TCI state group.

[0211] In this embodiment of the application, the indication information is the fourth MAC-CE, that is, a TCI state group is directly activated through the fourth MAC-CE, and then the TCI state included in the activated TCI state group can be directly used as the TCI state corresponding to the TRP.

[0212] Optionally, the terminal receives a second configuration signaling, which is used to configure a TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with an open-loop power parameter.

[0213] The second configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0214] In this embodiment of the application, the indication information sent by the network device actually activates a TCI state group. Each TCI state in the multiple TCI states included in the TCI state group corresponds to a TRP. The TCI states included in the TCI state group can be directly determined as the TCI states corresponding to the TRPs without further indication.

[0215] In some embodiments, the indication information is a fourth MAC-CE, which is used to activate a TCI state group.

[0216] In this embodiment of the application, the indication information is the fourth MAC-CE, that is, a TCI state group is directly activated through the fourth MAC-CE, and then the TCI state included in the activated TCI state group can be directly used as the TCI state corresponding to the TRP.

[0217] Optionally, the terminal receives a second configuration signaling, which is used to configure a TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with an open-loop power parameter.

[0218] The second configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0219] In some embodiments, the open-loop power parameters include at least one of the following:

[0220] Open-loop receiver power target value;

[0221] Partial road loss compensation factor;

[0222] Closed-loop index;

[0223] Road loss reference signal.

[0224] In some embodiments, the indication information indicates multiple parameter sets, each parameter set indicating the open-loop power parameters corresponding to a TRP.

[0225] In this embodiment of the application, the network device sends indication information to the terminal. The indication information indicates multiple parameter sets, and each parameter set indicates the open-loop power parameter corresponding to a TRP. Therefore, after receiving the indication information sent by the network device, the terminal can determine multiple parameter sets according to the indication information, and then determine the open-loop power parameter of the TRP corresponding to each parameter set from the multiple parameter sets.

[0226] Optionally, the indication information is carried in RRC (Radio Resource Control) or MAC-CE.

[0227] In some embodiments, the terminal can determine the TRP corresponding to each parameter set in a predefined manner, that is, by implicitly indicating the TRP corresponding to each parameter set. Alternatively, the indication information may also carry an identifier of the TRP corresponding to each parameter set, that is, by explicitly indicating the TRP corresponding to each parameter set.

[0228] For example, if the indication information specifies multiple parameter sets, the terminal can determine the corresponding TRP based on the location of each parameter set. For instance, the first parameter set might be the open-loop power parameters for the uplink transmission corresponding to the first TCI state, and the second parameter set might be the open-loop power parameters for the uplink transmission corresponding to the second TCI state.

[0229] For example, when sending indication information via RRC or MAC-CE, the indication information includes an identifier corresponding to the parameter set, which is used to indicate the TRP corresponding to the parameter set.

[0230] For example, identifier 1 corresponding to the first parameter set indicates that the first parameter set corresponds to the first TRP, and identifier 2 corresponding to the second parameter set indicates that the second parameter set corresponds to the second TRP.

[0231] In some embodiments, the open-loop power parameters include at least one of the following:

[0232] Open-loop receiver power target value;

[0233] Partial road loss compensation factor;

[0234] Closed-loop index.

[0235] In some embodiments, the indication information includes multiple transmit power control (TPC) fields, each TPC field indicating a closed-loop power parameter corresponding to a TRP.

[0236] In this embodiment of the application, the network device can indicate the uplink transmission power corresponding to each TRP among multiple TRPs through indication information. Since the uplink transmission power needs to be determined by the closed-loop power parameter, the network device can set multiple TPC fields in the indication information, and each TPC field corresponds to the closed-loop power parameter of a TRP.

[0237] In some embodiments, the indication information is at least one of DCI 0_1, DCI 0_2, DCI 1_1, DCI 1_2, and DCI 2_2.

[0238] For example, as shown in Table 3, different values ​​in the TPC domain correspond to different closed-loop power parameters.

[0239] Table 3

[0240]

[0241]

[0242] Referring to Table 3, different fields in each TPC field correspond to different closed-loop power parameters. Furthermore, Table 3 in this embodiment is merely illustrative; TPC field fields may also correspond to other closed-loop power parameters, and this embodiment does not impose limitations.

[0243] In some embodiments, the indication information indicates a set of closed-loop power parameters, which includes multiple closed-loop power parameters.

[0244] In this embodiment of the application, the indication information indicates the closed-loop power parameter corresponding to each TRP among multiple TRPs by indicating a set of closed-loop power parameters. That is, the set of closed-loop power parameters includes multiple closed-loop power parameters, each closed-loop power parameter corresponds to one TRP, and multiple closed-loop power parameters correspond to multiple TRPs.

[0245] Optionally, the indication information includes a TPC field, meaning that multiple closed-loop power parameters can be indicated through a single TPC field, thereby allowing the terminal to determine the closed-loop power parameters corresponding to each TRP.

[0246] For example, as shown in Table 4, different values ​​in the TPC domain correspond to different closed-loop power parameters.

[0247] Table 4

[0248]

[0249] In some embodiments, the network device needs to first configure the correspondence between the indication information and the closed-loop power parameter set for the terminal. The terminal receives the correspondence between the indication information and the closed-loop power parameter set sent by the network device. The closed-loop power parameter set includes multiple closed-loop power parameters.

[0250] In the embodiments of this application, a new power control method is provided when multiple TRPs are configured for the terminal. This method can control the uplink transmission power of each TRP. By controlling the power of each TRP separately, interference between TRPs is reduced, and the channel capacity of the system is also guaranteed.

[0251] Figure 9 The flowchart illustrates a power control method provided in an exemplary embodiment of this application, which can be applied, for example, to... Figure 1 In the network device shown, the method includes at least some of the following:

[0252] Step 901: The network device sends an indication message to the terminal, which indicates the uplink transmission power control parameters for each of the multiple TRPs.

[0253] In this embodiment, the network device and the terminal can communicate. For the terminal, sending information to the network device refers to uplink transmission. The terminal can perform uplink transmission through multiple TRPs configured on the network device, and each TRP has its own corresponding uplink transmission. That is, when the terminal performs uplink transmission through different TRPs, it will use different power levels to send information.

[0254] In some embodiments, the uplink transmission power refers to the power of the uplink channel, or the uplink transmission refers to the power of the uplink signal; this application embodiment does not limit this. Alternatively, the uplink transmission power in this application embodiment can be replaced by the power control parameters of the uplink channel. Or, the uplink transmission power in this application embodiment can be replaced by the power control parameters of the uplink signal.

[0255] Optionally, the uplink transmission includes at least one of SRS (Sound Resource Signal), PUSCH (Physical Uplink Shared Channel), and PUCCH (Physical Uplink Control Channel).

[0256] In some embodiments, the uplink power control parameters for each TRP include open-loop power parameters and closed-loop power parameters.

[0257] Among them, the open-loop power parameter is used to compensate for signal loss caused by path loss and shadow fading, while the closed-loop power parameter refers to the power adjustment value indicated by the terminal for the second uplink transmission based on the uplink power measured by the network device based on the first uplink transmission.

[0258] The trigger time of the first uplink transmission is before the trigger time of the second uplink transmission. That is, the first uplink transmission is the uplink transmission performed by the terminal before the current uplink transmission, while the second uplink transmission is the uplink transmission performed by the terminal currently or subsequently. In addition, this closed-loop power parameter can also be understood as the power adjustment value indicated by the terminal for the current uplink transmission, which is the uplink power measured by the network device based on the previous uplink transmission.

[0259] In this embodiment of the application, the indication information indicates the open-loop power parameters and the closed-loop power parameters. The terminal can determine the indicated open-loop power parameters and the closed-loop power parameters based on the indication information, and then determine the uplink transmission power based on the open-loop power parameters and the closed-loop power parameters.

[0260] In some embodiments, the open-loop power parameter includes an open-loop receiver power target value, a partial path loss compensation factor, a closed-loop index, and a path loss reference signal. Based on the open-loop and closed-loop power parameters, the uplink transmission power can be determined using the following formula:

[0261] P = min[P] CMAX ,{A}+{B}+{C}]

[0262] Among them, P CMAX This refers to the maximum allowed uplink transmission power. A refers to the open-loop portion, calculated from the open-loop power parameters P0, alpha, and PL. P0 is the target power value at the open-loop receiver, alpha is a partial path loss compensation factor, and PL is the estimated downlink path loss. B refers to the closed-loop portion, determined by the closed-loop power parameters, i.e., the power control adjustment state value, used to dynamically adjust the power of any uplink transmission by the terminal. C refers to other adjustment quantities, which are associated with resource allocation, link adaptation, and other information. The open-loop and closed-loop portions need to be indicated through indication information.

[0263] In some embodiments, the open-loop power parameters and the Transmission Indication Configuration (TCI) status are in a one-to-one correspondence.

[0264] Optionally, the open-loop power parameter is indicated by the TCI (Transmission Configuration Indication) status, and there is a different relationship between the TCI status and the open-loop power parameter.

[0265] Optionally, the TCI state can also be represented by a TCI state, which is not limited in this embodiment. Furthermore, the TCI state in this embodiment can be a joint TCI state or an uplink TCI state.

[0266] In the embodiments of this application, the open-loop power parameters and TCI states have a one-to-one correspondence, that is, one TCI state corresponds to one type of open-loop power parameter.

[0267] In some embodiments, the indication information indicates multiple TCI fields, and each TCI field indicates a TCI status.

[0268] In the embodiments of this application, the open-loop power parameters and TCI states have a one-to-one correspondence, that is, one TCI state corresponds to one type of open-loop power parameter.

[0269] Optionally, the network device configures the correspondence between open-loop power parameters and TCI status for the terminal.

[0270] For example, network devices configure the correspondence between open-loop power parameters and TCI states for terminals by configuring a TCI state list.

[0271] In this embodiment, there is a one-to-one correspondence between TCI states and open-loop power parameters. That is, each TCI state corresponds to one open-loop power parameter, and each TCI state is associated with an open-loop power parameter corresponding to a TRP. The open-loop power parameter corresponding to each TRP can be indicated through the TCI field. Furthermore, each TCI state indicated by the multiple indication fields in the indication information corresponds to one of the multiple activated TCI states.

[0272] Optionally, for each TCI field, each code point in that TCI field corresponds to a TCI state. Each TCI field includes at least one bit, and this at least one bit can indicate multiple code points, with different code points indicating different TCI states. Alternatively, a code point can also be understood as a numerical value indicated by at least one bit; that is, at least one bit can indicate multiple numerical values, with different numerical values ​​corresponding to different TCI states.

[0273] For example, if a TCI field consists of 3 bits, then the TCI field can indicate 8 values. In other words, the network device can use the TCI field to indicate one of the 8 TCI states.

[0274] In some embodiments, the network device sends a plurality of first MAC-CEs, wherein each first MAC-CE is used to activate a plurality of TCI states corresponding to a TCI domain.

[0275] In this embodiment, the network device activates multiple TCI states corresponding to a TCI field in advance via a first MAC-CE, and then indicates a TCI state corresponding to that TCI field via indication information. Furthermore, the network device sends multiple first MAC-CEs to the terminal, and each first MAC-CE activates multiple TCI states corresponding to a TCI field. That is, one first MAC-CE is used to activate multiple TCI states corresponding to a TRP's TCI field, and multiple first MAC-CEs are sent to indicate the activation of multiple TCI states corresponding to multiple TCI fields.

[0276] For example, the first MAC-CE includes status information corresponding to each TCI state. A status value of 1 indicates that the corresponding TCI state is active, while a status value of 0 indicates that the corresponding TCI state is inactive. It also includes an identifier for distinguishing TCI fields, indicating which TCI field the multiple active TCI states of the first MAC-CE correspond to. For example, if the identifier is 0, it corresponds to the first TCI field, and if the identifier is 1, it corresponds to the second TCI field.

[0277] For example, Figure 4 and Figure 5 The formats of the first MAC-CE are shown respectively. Both formats of the first MAC-CE can activate multiple TCI states corresponding to the TCI field. For example... Figure 4 As shown, a first MAC-CE includes status information for N TCI states, and the status information corresponding to each TCI state indicates whether that TCI state is active. Among them, the... Figure 4 Each line in the table contains status information for 8 TCI states. N / 8 lines are used to configure whether N TCI states are activated. Alternatively, as shown below... Figure 5 As shown, a first MAC-CE includes M TCI states, and one row corresponds to one TCI state. All M TCI states are active TCI states.

[0278] It should be noted that in this embodiment, the number of TCI states corresponding to each TCI field activated by the network device is related to the number of bits in the TCI field. For example, if each TCI field includes 3 bits, indicating a maximum of 8 TCI states, then the network device activates a maximum of 8 TCI states for each TCI field; conversely, if each TCI field includes 2 bits, indicating a maximum of 4 TCI states, then the network device activates a maximum of 4 TCI states for each TCI field. Alternatively, it can be understood that the network device activates TCI states with a number of code points less than or equal to the number of TCI fields.

[0279] In some embodiments, before activating a TCI state through the first MAC-CE, the network device needs to configure multiple TCI states for the terminal so that the network device can activate some of the multiple TCI states through the first MAC-CE.

[0280] Optionally, the network device sends a first configuration signaling to the terminal. The first configuration signaling is used to configure the TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with the open-loop power parameter.

[0281] In this embodiment of the application, the network device configures a TCI state list containing multiple TCI states for the terminal through a first configuration signaling, and informs the terminal of each TCI state through the TCI state list.

[0282] In some embodiments, the first configuration signaling is RRC signaling or other higher-level signaling, which is not limited in this application embodiment.

[0283] Optionally, one TCI state in the TCI state list configured by the first configuration information corresponds to one open-loop power parameter.

[0284] For example, such as Figure 6 As shown, the TCI state list includes multiple TCI states, and each TCI state corresponds to an element, which is also a corresponding open-loop power parameter. For example, TCI state 1 corresponds to element 1, which is also the open-loop power parameter 1. TCI state 2 corresponds to element 2, which is also the open-loop power parameter 2.

[0285] In some embodiments, the indication information indicates multiple TCI states, each TCI state corresponding to a TRP.

[0286] In this embodiment, the indication information is actually for a TRP that a TCI state has been activated. The TCI state can be directly determined as the TCI state corresponding to the TRP without further indication.

[0287] In some embodiments, the indication information includes a plurality of second MAC-CEs, each second MAC-CE being used to activate a TCI state.

[0288] In this embodiment, the indication information includes multiple second MAC-CEs. That is, each of the multiple second MAC-CEs can directly activate a TCI state, and thus the activated TCI state can be directly used as the TCI state corresponding to a TRP. Each TCI state activated by the multiple second MAC-CEs corresponds to a TRP. The open-loop power parameter associated with each activated TCI state is used to determine the uplink transmission power of the corresponding TRP.

[0289] Optionally, the network device sends a first configuration signaling message, which is used to configure a TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with an open-loop power parameter.

[0290] The first configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0291] In some embodiments, the indication information indicates a TCI field, the TCI field indicates a TCI state group, and the TCI state group includes multiple TCI states.

[0292] In this embodiment of the application, the network device can indicate the uplink power control parameters corresponding to each TRP in a plurality of TRPs through indication information. The uplink power control parameters include open-loop power parameters. The network device can then indicate a TCI state group through indication information. The TCI state group includes a plurality of TCI states. One TCI field indicates one TCI state group. Each TCI state in the plurality of TCI states included in the TCI state group is associated with an open-loop power parameter.

[0293] The number of TCI states included in a TCI state group is the same as the number of TRPs.

[0294] In some embodiments, the indication information is DCI 1_1 or DCI 1_2.

[0295] In some embodiments, each of the plurality of TCI states is associated with an open-loop power parameter of a TRP, and the TCI field indicates a TCI state group corresponding to one of the plurality of activated TCI state groups.

[0296] In this embodiment, there is a one-to-one correspondence between the TCI state and the open-loop power parameter. That is, each TCI state is associated with one open-loop power parameter, and the open-loop power parameter indicated by each TCI state corresponds to the open-loop power parameter of a TRP. The open-loop power parameter corresponding to each TRP can be indicated through this indication information. Furthermore, the TCI state group indicated by the TCI field in the indication information corresponds to one of the multiple activated TCI state groups.

[0297] Optionally, for the TCI field in the indication information, the TCI field uses code points to indicate TCI state groups. The TCI field includes at least one bit, and at least one bit can indicate multiple code points, with different code points indicating different TCI state groups. Alternatively, a code point can also be understood as a numerical value indicated by at least one bit; that is, at least one bit can indicate multiple numerical values, with different numerical values ​​corresponding to different TCI state groups.

[0298] For example, if a TCI field consists of 3 bits, then the TCI field can indicate 8 values. In other words, the network device can use the TCI field to indicate one of the 8 TCI state groups.

[0299] In some embodiments, the network device informs the terminal of the activated TCI status group via MAC-CE.

[0300] The network device sends a third MAC-CE to the terminal, which is used to activate multiple TCI state groups corresponding to the corresponding TCI domain.

[0301] In this embodiment of the application, the network device activates multiple TCI state groups corresponding to a TCI domain in advance through a third MAC-CE, and then indicates a TCI state group indicated by the TCI domain through indication information.

[0302] For example, let's take the case where each TCI state group includes two TCI states as an example. Figure 7 As shown, this third MAC-CE includes 2N TCI states, with each pair of TCI states forming a TCI state group, where the TCI state ID is... 0,1 TCI Status ID 0,2 For TCI state group 0, TCI state ID 1,1 TCI Status ID 1,2 For TCI state group 1, and so on, TCI state ID N,1 TCI Status ID N,2 Let N be the TCI state group.

[0303] It should be noted that in this embodiment, the number of TCI state groups corresponding to the TCI field activated by the network device is related to the number of bits in the TCI field. For example, if the TCI field includes 3 bits, indicating a maximum of 8 TCI state groups, then the network device will activate a maximum of 8 TCI state groups for the TCI field; if the TCI field includes 2 bits, indicating a maximum of 4 TCI state groups, then the network device will activate a maximum of 4 TCI state groups for the TCI field. Alternatively, it can be understood that the network device activates TCI states with a number of code points less than or equal to the number of TCI points included in the TCI field.

[0304] In some embodiments, before a network device activates a TCI state group through a third MAC-CE, it needs to configure multiple TCI states for the terminal so that the network device can activate some of the multiple TCI states through the third MAC-CE.

[0305] Optionally, the network device sends a second configuration signaling message to the terminal. The second configuration signaling message is used to configure the TCI status list, which contains multiple TCI statuses.

[0306] In this embodiment of the application, the network device configures a TCI state list containing multiple TCI states for the terminal through a second configuration signaling. By configuring multiple TCI states for the terminal through this TCI state list, the network device can activate some of the configured multiple TCI states through a third MAC-CE, and these TCI states belong to the same TCI state group.

[0307] In some embodiments, the indication information indicates a TCI state group, which includes multiple TCI states.

[0308] In this embodiment of the application, the indication information sent by the network device actually activates a TCI state group. Each TCI state in the multiple TCI states included in the TCI state group corresponds to a TRP. The TCI states included in the TCI state group can be directly determined as the TCI states corresponding to the TRPs without further indication.

[0309] In some embodiments, the indication information is a fourth MAC-CE, which is used to activate a TCI state group.

[0310] In this embodiment of the application, the indication information is the fourth MAC-CE, that is, a TCI state group is directly activated through the fourth MAC-CE, and then the TCI state included in the activated TCI state group can be directly used as the TCI state corresponding to the TRP.

[0311] Optionally, the network device sends a second configuration signaling to the terminal. The second configuration signaling is used to configure the TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with the open-loop power parameter.

[0312] The second configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0313] In this embodiment of the application, the indication information sent by the network device actually activates a TCI state group. Each TCI state in the multiple TCI states included in the TCI state group corresponds to a TRP. The TCI states included in the TCI state group can be directly determined as the TCI states corresponding to the TRPs without further indication.

[0314] In some embodiments, the indication information is a fourth MAC-CE, which is used to activate a TCI state group.

[0315] In this embodiment of the application, the indication information is the fourth MAC-CE, that is, a TCI state group is directly activated through the fourth MAC-CE, and then the TCI state included in the activated TCI state group can be directly used as the TCI state corresponding to the TRP.

[0316] Optionally, the network device sends a second configuration signaling to the terminal. The second configuration signaling is used to configure the TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with the open-loop power parameter.

[0317] The second configuration signaling is similar to the first configuration signaling in the above embodiments, and will not be described again here.

[0318] In some embodiments, the open-loop power parameters include at least one of the following:

[0319] Open-loop receiver power target value;

[0320] Partial road loss compensation factor;

[0321] Closed-loop index;

[0322] Road loss reference signal.

[0323] In some embodiments, the indication information indicates multiple parameter sets, each parameter set indicating the open-loop power parameters corresponding to a TRP.

[0324] In this embodiment of the application, the network device sends indication information to the terminal. The indication information indicates multiple parameter sets, and each parameter set indicates the open-loop power parameter corresponding to a TRP. Therefore, after receiving the indication information sent by the network device, the terminal can determine multiple parameter sets according to the indication information, and then determine the open-loop power parameter of the TRP corresponding to each parameter set from the multiple parameter sets.

[0325] Optionally, the indication information is carried in RRC (Radio Resource Control) or MAC-CE.

[0326] In some embodiments, the terminal can determine the TRP corresponding to each parameter set in a predefined manner, that is, by implicitly indicating the TRP corresponding to each parameter set. Alternatively, the indication information may also carry an identifier of the TRP corresponding to each parameter set, that is, by explicitly indicating the TRP corresponding to each parameter set.

[0327] For example, if the indication information specifies multiple parameter sets, the terminal can determine the corresponding TRP based on the location of each parameter set. For instance, the first parameter set might be the open-loop power parameters for the uplink transmission corresponding to the first TCI state, and the second parameter set might be the open-loop power parameters for the uplink transmission corresponding to the second TCI state.

[0328] For example, when sending indication information via RRC or MAC-CE, the indication information includes an identifier corresponding to the parameter set, which is used to indicate the TRP corresponding to the parameter set.

[0329] For example, identifier 1 corresponding to the first parameter set indicates that the first parameter set corresponds to the first TRP, and identifier 2 corresponding to the second parameter set indicates that the second parameter set corresponds to the second TRP.

[0330] In some embodiments, the open-loop power parameters include at least one of the following:

[0331] Open-loop receiver power target value;

[0332] Partial road loss compensation factor;

[0333] Closed-loop index.

[0334] In some embodiments, the indication information includes multiple transmit power control (TPC) fields, each TPC field indicating a closed-loop power parameter corresponding to a TRP.

[0335] In this embodiment of the application, the network device can indicate the uplink transmission power corresponding to each TRP among multiple TRPs through indication information. Since the uplink transmission power needs to be determined by the closed-loop power parameter, the network device can set multiple TPC fields in the indication information, and each TPC field corresponds to the closed-loop power parameter of a TRP.

[0336] In some embodiments, the indication information is at least one of DCI 0_1, DCI 0_2, DCI 1_1, DCI 1_2, and DCI 2_2.

[0337] For example, as shown in Table 5, different values ​​in the TPC domain correspond to different closed-loop power parameters.

[0338] Table 5

[0339] 0 -1 1 0 2 1 3 3

[0340] Referring to Table 5, different fields in each TPC field correspond to different closed-loop power parameters. Furthermore, Table 5 in this embodiment is merely illustrative; TPC field fields may also correspond to other closed-loop power parameters, and this embodiment does not impose limitations.

[0341] In some embodiments, the indication information indicates a set of closed-loop power parameters, which includes multiple closed-loop power parameters.

[0342] In this embodiment of the application, the indication information indicates the closed-loop power parameter corresponding to each TRP among multiple TRPs by indicating a set of closed-loop power parameters. That is, the set of closed-loop power parameters includes multiple closed-loop power parameters, each closed-loop power parameter corresponds to one TRP, and multiple closed-loop power parameters correspond to multiple TRPs.

[0343] Optionally, the indication information includes a TPC field, meaning that multiple closed-loop power parameters can be indicated through a single TPC field, thereby allowing the terminal to determine the closed-loop power parameters corresponding to each TRP.

[0344] For example, as shown in Table 6, different values ​​in the TPC domain correspond to different closed-loop power parameters.

[0345] Table 6

[0346]

[0347] In some embodiments, the network device needs to first configure the correspondence between the indication information and the closed-loop power parameter set for the terminal. Then, the network device sends the correspondence between the indication information and the closed-loop power parameter set to the terminal. The closed-loop power parameter set includes multiple closed-loop power parameters.

[0348] In the embodiments of this application, a new power control method is provided when multiple TRPs are configured for the terminal. This method can control the uplink transmission power of each TRP. By controlling the power of each TRP separately, interference between TRPs is reduced, and the channel capacity of the system is also guaranteed.

[0349] Figure 10 A block diagram of a power control device provided in an exemplary embodiment of this application is shown. See also: Figure 10 The device includes:

[0350] The receiving module 1001 is used to receive indication information sent by the network device, which indicates the uplink transmission power corresponding to each of the multiple transmission receiving points (TRPs).

[0351] In some embodiments, the uplink transmission power corresponding to each TRP is determined by open-loop power parameters and closed-loop power parameters;

[0352] Among them, the open-loop power parameter is used to compensate for signal loss caused by path loss and shadow fading, while the closed-loop power parameter refers to the power adjustment value indicated by the terminal for the second uplink transmission based on the uplink power measured by the network device based on the first uplink transmission.

[0353] In some embodiments, the open-loop power parameters and the Transmission Indication Configuration (TCI) status are in a one-to-one correspondence.

[0354] In some embodiments, the indication information indicates multiple TCI fields, and each TCI field indicates a TCI status.

[0355] In some embodiments, each TCI state is associated with an open-loop power parameter of a TRP, and the TCI state indicated by the TCI field corresponds to one of a plurality of activated TCI states.

[0356] In some embodiments, the receiving module 801 is further configured to receive a plurality of first media access control control units (MAC-CEs), each first MAC-CE being configured to activate a plurality of TCI states corresponding to a TCI domain.

[0357] In some embodiments, the indication information indicates multiple TCI states, each TCI state corresponding to a TRP.

[0358] In some embodiments, the indication information includes a plurality of second MAC-CEs, each second MAC-CE being used to activate a TCI state.

[0359] In some embodiments, the receiving module 1001 is further configured to receive a first configuration signaling, the first configuration signaling being used to configure a TCI status list, the TCI status list containing multiple TCI statuses, and each TCI status corresponding to an open-loop power parameter.

[0360] In some embodiments, the indication information indicates a TCI field, the TCI field indicates a TCI state group, and the TCI state group includes multiple TCI states.

[0361] In some embodiments, each of the plurality of TCI states is associated with an open-loop power parameter of a TRP, and the TCI state group indicated by the TCI field corresponds to one of the plurality of activated TCI state groups.

[0362] In some embodiments, the receiving module 1001 is further configured to receive a third MAC-CE, which is used to activate multiple TCI state groups corresponding to the TCI domain.

[0363] In some embodiments, the indication information indicates a TCI state group, which includes multiple TCI states.

[0364] In some embodiments, the indication information is a fourth MAC-CE, which is used to activate a TCI state group.

[0365] In some embodiments, the receiving module 1001 is further configured to receive a second configuration signaling, the second configuration signaling being used to configure a TCI state list, the TCI state list containing multiple TCI state groups, and each TCI state included in each TCI state group corresponding one-to-one with an open-loop power parameter.

[0366] In some embodiments, the open-loop power parameters include at least one of the following:

[0367] Open-loop receiver power target value;

[0368] Partial road loss compensation factor;

[0369] Closed-loop index;

[0370] Road loss reference signal.

[0371] In some embodiments, the indication information indicates multiple parameter sets, each parameter set indicating the open-loop power parameters corresponding to a TRP.

[0372] In some embodiments, the indication information is carried in Radio Resource Control (RRC) or MAC-CE.

[0373] In some embodiments, the open-loop power parameters include at least one of the following:

[0374] Open-loop receiver power target value;

[0375] Partial road loss compensation factor;

[0376] Closed-loop index.

[0377] In some embodiments, the indication information includes multiple transmit power control (TPC) fields, each TPC field indicating a closed-loop power parameter corresponding to a TRP.

[0378] In some embodiments, the indication information indicates a set of closed-loop power parameters, which includes multiple closed-loop power parameters.

[0379] In some embodiments, the receiving module 1001 is further configured to receive the correspondence between the indication information sent by the network device and the closed-loop power parameter set, wherein the closed-loop power parameter set includes multiple closed-loop power parameters.

[0380] It should be noted that the apparatus provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0381] Figure 11 A block diagram of another power control device provided in an exemplary embodiment of this application is shown. See also: Figure 11 The device includes:

[0382] The sending module 1101 is used to send indication information to the terminal, the indication information indicating the uplink transmission power corresponding to each TRP among multiple transmission receiving points (TRPs).

[0383] In some embodiments, the uplink transmission power corresponding to each TRP is determined by open-loop power parameters and closed-loop power parameters;

[0384] Among them, the open-loop power parameter is used to compensate for signal loss caused by path loss and shadow fading, while the closed-loop power parameter refers to the power adjustment value indicated by the terminal for the second uplink transmission based on the uplink power measured by the network device based on the first uplink transmission.

[0385] In some embodiments, the open-loop power parameters and the Transmission Indication Configuration (TCI) status are in a one-to-one correspondence.

[0386] In some embodiments, the indication information indicates multiple TCI fields, and each TCI field indicates a TCI status.

[0387] In some embodiments, each TCI state is associated with an open-loop power parameter of a TRP, and the TCI state indicated by the TCI field corresponds to one of a plurality of activated TCI states.

[0388] In some embodiments, the sending module 1101 is further configured to send a plurality of first MAC-CEs, each first MAC-CE being used to activate a plurality of TCI states corresponding to a TCI field.

[0389] In some embodiments, the indication information indicates multiple TCI states, each TCI state corresponding to a TRP.

[0390] In some embodiments, the indication information includes a plurality of second MAC-CEs, each second MAC-CE being used to activate a TCI state.

[0391] In some embodiments, the transmitting module 1101 is further configured to transmit a first configuration signaling, the first configuration signaling being used to configure a TCI status list, the TCI status list containing multiple TCI statuses, and each TCI status corresponding one-to-one with an open-loop power parameter.

[0392] In some embodiments, the indication information indicates a TCI field, the TCI field indicates a TCI state group, and the TCI state group includes multiple TCI states.

[0393] In some embodiments, each of the plurality of TCI states is associated with an open-loop power parameter of a TRP, and the TCI state group indicated by the TCI field corresponds to one of the plurality of activated TCI state groups.

[0394] In some embodiments, the sending module 1101 is further configured to send a third MAC-CE, which is used to activate multiple TCI state groups corresponding to the TCI domain.

[0395] In some embodiments, the indication information indicates a TCI state group, which includes multiple TCI states.

[0396] In some embodiments, the indication information is a fourth MAC-CE, which is used to activate a TCI state group.

[0397] In some embodiments, the transmitting module 1101 is further configured to transmit a second configuration signaling, which is used to configure a TCI status list. The TCI status list contains multiple TCI status groups, and each TCI status in each TCI status group corresponds one-to-one with an open-loop power parameter.

[0398] In some embodiments, the open-loop power parameters include at least one of the following:

[0399] Open-loop receiver power target value;

[0400] Partial road loss compensation factor;

[0401] Closed-loop index;

[0402] Road loss reference signal.

[0403] In some embodiments, the indication information indicates multiple parameter sets, each parameter set indicating the open-loop power parameters corresponding to a TRP.

[0404] In some embodiments, the indication information is carried in Radio Resource Control (RRC) or MAC-CE.

[0405] In some embodiments, the open-loop power parameters include at least one of the following:

[0406] Open-loop receiver power target value;

[0407] Partial road loss compensation factor;

[0408] Closed-loop index.

[0409] In some embodiments, the indication information includes multiple transmit power control (TPC) fields, each TPC field indicating a closed-loop power parameter corresponding to a TRP.

[0410] In some embodiments, the indication information indicates a set of closed-loop power parameters, which includes multiple closed-loop power parameters.

[0411] In some embodiments, the sending module 1101 is further configured to send to the terminal the correspondence between indication information and the closed-loop power parameter set, the closed-loop power parameter set including multiple closed-loop power parameters.

[0412] It should be noted that the apparatus provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0413] Figure 12 A schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application is shown. The communication device includes: a processor 1201, a receiver 1202, a transmitter 1203, a memory 1204, and a bus 1205.

[0414] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

[0415] The receiver 1202 and the transmitter 1203 can be implemented as a communication component, which can be a communication chip.

[0416] The memory 1204 is connected to the processor 1201 via the bus 1205.

[0417] The memory 1204 can be used to store at least one program code, and the processor 1201 is used to execute the at least one program code to implement the various steps in the above method embodiments.

[0418] Furthermore, the communication device can be a terminal or a network device. The memory 1004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0419] In an exemplary embodiment, a computer-readable storage medium is also provided, wherein executable program code is stored therein, the executable program code being loaded and executed by a processor to implement the power control method performed by a communication device provided in the above-described method embodiments.

[0420] In an exemplary embodiment, a chip is provided, the chip including programmable logic circuitry and / or program instructions, which, when the chip is run on a terminal or network device, are used to implement the power control methods provided in the various method embodiments.

[0421] In an exemplary embodiment, a computer program product is provided, which, when executed by a processor of a terminal or network device, is used to implement the power control methods provided in the various method embodiments described above.

[0422] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0423] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A power control method, characterized in that, The method is executed by a terminal, and the method includes: Receive indication information sent by the network device, the indication information indicating the uplink transmission power control parameters corresponding to each of the multiple Transmission Receive Points (TRPs); The uplink transmission power control parameters corresponding to each TRP include open-loop power parameters, which are used to compensate for signal loss caused by path loss and shadow fading; the open-loop power parameters are in one-to-one correspondence with the Transmission Indicator (TCI) status. The indication information indicates a TCI domain, the TCI domain indicates a TCI state group, the TCI state group includes multiple TCI states, each of the multiple TCI states is associated with an open-loop power parameter of a TRP, and the TCI state group indicated by the TCI domain corresponds to one of the multiple activated TCI state groups.

2. The method according to claim 1, characterized in that, The uplink transmission power control parameters corresponding to each TRP also include closed-loop power parameters; The closed-loop power parameter refers to the power adjustment value indicated by the second uplink transmission of the terminal, which is the uplink power measured by the network device based on the first uplink transmission.

3. The method according to claim 1, characterized in that, The indication information indicates multiple TCI fields, and each TCI field indicates a TCI state.

4. The method according to claim 3, characterized in that, Each TCI state is associated with an open-loop power parameter of a TRP, and the TCI state indicated by the TCI field corresponds to one of a plurality of activated TCI states.

5. The method according to claim 4, characterized in that, The method further includes: Receive multiple first media access control units (MAC-CEs), each of which is used to activate multiple TCI states corresponding to a TCI domain.

6. The method according to claim 1, characterized in that, The indication information indicates multiple TCI states, and each TCI state corresponds to a TRP.

7. The method according to claim 6, characterized in that, The indication information includes multiple second MAC-CEs, each of which is used to activate a TCI state.

8. The method according to claim 1, characterized in that, The method further includes: Receive a first configuration signaling, which is used to configure a TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with an open-loop power parameter.

9. The method according to claim 1, characterized in that, The method further includes: Receive a third MAC-CE, which is used to activate multiple TCI state groups corresponding to the TCI domain.

10. The method according to claim 1, characterized in that, The indication information indicates a TCI state group, which includes multiple TCI states.

11. The method according to claim 10, characterized in that, The indication information is the fourth MAC-CE, which is used to activate a TCI state group.

12. The method according to claim 1, characterized in that, The method further includes: Receive a second configuration signaling, which is used to configure a TCI state list. The TCI state list contains multiple TCI state groups, and each TCI state in each TCI state group corresponds one-to-one with an open-loop power parameter.

13. The method according to any one of claims 1 to 12, characterized in that, The open-loop power parameter includes at least one of the following: Open-loop receiver power target value; Partial road loss compensation factor; Closed-loop index; Road loss reference signal.

14. The method according to claim 1, characterized in that, The indication information indicates multiple parameter sets, each parameter set being used to indicate the open-loop power parameters corresponding to a TRP.

15. The method according to claim 1, characterized in that, The indication information is carried in Radio Resource Control (RRC) or MAC-CE.

16. The method according to claim 14 or 15, characterized in that, The open-loop power parameter includes at least one of the following: Open-loop receiver power target value; Partial road loss compensation factor; Closed-loop index.

17. The method according to claim 2, characterized in that, The indication information includes multiple transmit power control (TPC) fields, each TPC field indicating the closed-loop power parameter corresponding to a TRP.

18. The method according to claim 2, characterized in that, The indication information indicates a set of closed-loop power parameters, which includes multiple closed-loop power parameters.

19. The method according to claim 18, characterized in that, The method further includes: The system receives the correspondence between the indication information sent by the network device and the closed-loop power parameter set, which includes multiple closed-loop power parameters.

20. A power control method, characterized in that, The method is performed by a network device, and the method includes: Send indication information to the terminal, the indication information indicating the uplink transmission power control parameters corresponding to each of the multiple TRPs; The uplink transmission power control parameters corresponding to each TRP include open-loop power parameters, which are used to compensate for signal loss caused by path loss and shadow fading; the open-loop power parameters are in one-to-one correspondence with the Transmission Indicator (TCI) status. The indication information indicates a TCI domain, the TCI domain indicates a TCI state group, the TCI state group includes multiple TCI states, each of the multiple TCI states is associated with an open-loop power parameter of a TRP, and the TCI state group indicated by the TCI domain corresponds to one of the multiple activated TCI state groups.

21. The method according to claim 20, characterized in that, The uplink transmission power control parameters corresponding to each TRP also include closed-loop power parameters; The closed-loop power parameter refers to the power adjustment value indicated by the second uplink transmission of the terminal, which is the uplink power measured by the network device based on the first uplink transmission.

22. The method according to claim 20, characterized in that, The indication information indicates multiple TCI fields, and each TCI field indicates a TCI state.

23. The method according to claim 22, characterized in that, Each TCI state is associated with an open-loop power parameter of a TRP, and the TCI state indicated by the TCI field corresponds to one of a plurality of activated TCI states.

24. The method according to claim 23, characterized in that, The method further includes: Send multiple first MAC-CEs, each of which is used to activate multiple TCI states corresponding to a TCI field.

25. The method according to claim 20, characterized in that, The indication information indicates multiple TCI states, and each TCI state corresponds to a TRP.

26. The method according to claim 25, characterized in that, The indication information includes multiple second MAC-CEs, each of which is used to activate a TCI state.

27. The method according to claim 20, characterized in that, The method further includes: Send a first configuration signaling message, which is used to configure a TCI status list. The TCI status list contains multiple TCI statuses, and each TCI status corresponds one-to-one with an open-loop power parameter.

28. The method according to claim 20, characterized in that, The method further includes: Send a third MAC-CE, which is used to activate multiple TCI state groups corresponding to the TCI domain.

29. The method according to claim 20, characterized in that, The indication information indicates a TCI state group, which includes multiple TCI states.

30. The method according to claim 29, characterized in that, The indication information is the fourth MAC-CE, which is used to activate a TCI state group.

31. The method according to claim 20, characterized in that, The method further includes: Send a second configuration signaling message, which is used to configure a TCI status list. The TCI status list contains multiple TCI status groups, and each TCI status in each TCI status group corresponds one-to-one with an open-loop power parameter.

32. The method according to any one of claims 20 to 31, characterized in that, The open-loop power parameter includes at least one of the following: Open-loop receiver power target value; Partial road loss compensation factor; Closed-loop index; Road loss reference signal.

33. The method according to claim 20, characterized in that, The indication information indicates multiple parameter sets, each parameter set being used to indicate the open-loop power parameters corresponding to a TRP.

34. The method according to claim 20, characterized in that, The indication information is carried in Radio Resource Control (RRC) or MAC-CE.

35. The method according to claim 33 or 34, characterized in that, The open-loop power parameter includes at least one of the following: Open-loop receiver power target value; Partial road loss compensation factor; Closed-loop index.

36. The method according to claim 21, characterized in that, The indication information includes multiple transmit power control (TPC) fields, each TPC field indicating the closed-loop power parameter corresponding to a TRP.

37. The method according to claim 21, characterized in that, The indication information indicates a set of closed-loop power parameters, which includes multiple closed-loop power parameters.

38. The method according to claim 37, characterized in that, The method further includes: Send an indication message to the terminal and the correspondence between it and the closed-loop power parameter set, which includes multiple closed-loop power parameters.

39. A power control device, characterized in that, The device includes: The receiving module is used to receive indication information sent by the network device, the indication information indicating the uplink transmission power control parameters corresponding to each TRP among multiple transmission receiving points (TRPs); The uplink transmission power control parameters corresponding to each TRP include open-loop power parameters, which are used to compensate for signal loss caused by path loss and shadow fading; the open-loop power parameters are in one-to-one correspondence with the Transmission Indicator (TCI) status. The indication information indicates a TCI domain, the TCI domain indicates a TCI state group, the TCI state group includes multiple TCI states, each of the multiple TCI states is associated with an open-loop power parameter of a TRP, and the TCI state group indicated by the TCI domain corresponds to one of the multiple activated TCI state groups.

40. A power control device, characterized in that, The device includes: The sending module is used to send indication information to the terminal, the indication information indicating the uplink transmission power control parameters corresponding to each of the multiple TRPs; The uplink transmission power control parameters corresponding to each TRP include open-loop power parameters, which are used to compensate for signal loss caused by path loss and shadow fading; the open-loop power parameters are in one-to-one correspondence with the Transmission Indicator (TCI) status. The indication information indicates a TCI domain, the TCI domain indicates a TCI state group, the TCI state group includes multiple TCI states, each of the multiple TCI states is associated with an open-loop power parameter of a TRP, and the TCI state group indicated by the TCI domain corresponds to one of the multiple activated TCI state groups.

41. A terminal, characterized in that, The terminal includes: processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the power control method as described in any one of claims 1 to 19.

42. A network device, characterized in that, The network device includes: processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the power control method as described in any one of claims 20 to 38.

43. A computer-readable storage medium storing executable program code, the executable program code being loaded and executed by a processor to implement the power control method as claimed in any one of claims 1 to 38.

44. A computer program product, characterized in that, When the computer program product is executed by the processor of a terminal or network device, it is used to implement the power control method as described in any one of claims 1 to 38.

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