Power control method and apparatus

Abstract

This application provides a power control method and apparatus. The method includes: a terminal device receiving configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

Description

Power control method and device Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies. Background Art

[0002] In NR, multi-transmission reception point (multi-TRP) operation is supported, including uplink and downlink transmission. The terminal device can maintain communication links with multiple TRPs. For uplink transmission, power control is generally applied. The terminal device can estimate the path loss between the terminal device and the network equipment (such as TRP or gNB) based on the downlink path loss reference signal. The terminal device can calculate (or determine) the power of the uplink transmission based on the estimated path loss and some parameters.

[0003] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

[0004] Summary of the Invention

[0005] However, the inventors found that Release-19 will introduce uplink and downlink asymmetric transmission reception point (asymmetric DL single TRP / UL multi-TRP) operation, but there is currently no specific solution for how to perform power control, and uplink power control needs to be enhanced.

[0006] To address at least one of the above problems, embodiments of the present application provide a power control method and apparatus.

[0007] According to one aspect of an embodiment of the present application, a power control method is provided, including:

[0008] The terminal device receives configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission reception point, and / or performs a second uplink transmission with a second transmission reception point;

[0009] The terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor.

[0010] According to another aspect of an embodiment of the present application, a power control device is provided, including:

[0011] A receiving unit that receives configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission reception point, and / or performs a second uplink transmission with a second transmission reception point;

[0012] A processing unit calculates the power of the second uplink transmission according to a path loss estimation deviation factor.

[0013] According to another aspect of an embodiment of the present application, a power control method is provided, including:

[0014] The network device sends configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

[0015] According to another aspect of an embodiment of the present application, a power control device is provided, including:

[0016] A sending unit that sends configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

[0017] According to another aspect of an embodiment of the present application, a communication system is provided, including:

[0018] A network device that sends configuration information for uplink transmission;

[0019] A terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

[0020] One of the beneficial effects of the embodiments of the present application is that the terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor, so that appropriate power control can be performed even in an uplink and downlink asymmetric TRP operation scenario, which can improve the accuracy and reliability of the uplink transmission.

[0021] With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0022] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0023] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

[0025] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0026] FIG2 is a schematic diagram of a multi-TRP scenario according to an embodiment of the present application;

[0027] FIG3 is a schematic diagram of a power control method according to an embodiment of the present application;

[0028] FIG4 is a schematic diagram of a scenario of uplink and downlink asymmetric TRP operation according to an embodiment of the present application;

[0029] FIG5 is an example diagram of calculating a path loss estimation deviation factor according to an embodiment of the present application;

[0030] FIG6 is a schematic diagram of a power control method according to an embodiment of the present application;

[0031] FIG7 is a schematic diagram of a power control device according to an embodiment of the present application;

[0032] FIG8 is a schematic diagram of a power control device according to an embodiment of the present application;

[0033] FIG9 is a schematic diagram of a terminal device according to an embodiment of the present application;

[0034] FIG10 is a schematic diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0036] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0037] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0038] In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0039] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), etc., and / or other communication protocols currently known or to be developed in the future.

[0040] In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to the communication network and provides services to the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0041] Among them, base stations may include but are not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB) and 5G base station (gNB), etc., and may also include remote radio heads (RRH, Remote Radio Head), remote radio units (RRU, Remote Radio Unit), relays or low-power nodes (such as femeto, pico, etc.), IAB (Integrated Access and Backhaul) nodes or IAB-DU or IAB-donor. The term "base station" may include some or all of their functions, and each base station can provide communication coverage for a specific geographical area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used. The terms "cell" and "base station" can be used interchangeably without causing confusion.

[0042] In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives network services. A terminal device can be fixed or mobile and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), an IAB-MT, a station, and so on.

[0043] Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

[0044] For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measurement, including but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device-to-device (D2D) terminal, machine-to-machine (M2M) terminal, and so on.

[0045] In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

[0046] The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

[0047] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation using a terminal device and a network device as an example. As shown in FIG1 , a communication system 100 may include a network device 101 and a terminal device 102. For simplicity, FIG1 illustrates only one terminal device and one network device as an example, but the embodiments of the present application are not limited thereto. For example, multiple terminal devices may be provided.

[0048] In the embodiment of the present application, existing services or future services can be transmitted between the network device 101 and the terminal device 102. For example, these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0049] Figure 2 is a schematic diagram of a multi-TRP scenario in an embodiment of the present application. A TRP can be part of a network device (e.g., a gNB) that receives signals from a terminal device, or part of a network device (gNB) that sends signals to a terminal device. Furthermore, a TRP can also represent a set of downlink control information (DCI) or a set of reference signals, etc.

[0050] As shown in Figure 2, in the scenario of multi-TRP operation, the terminal device can have panel 1 (pannel-1) and panel 2 (pannel-2); a serving cell can schedule the terminal device from 2 TRPs to provide better physical downlink shared channel (PDSCH) coverage, reliability and / or data rate.

[0051] For multi-TRP operation, there are two different operating modes: single DCI and multi-DCI. In both modes, control of uplink and downlink operations is performed by the physical layer and the media access control (MAC) layer. In single-DCI mode, the terminal device is scheduled by both TRPs using the same DCI; in multi-DCI mode, the terminal device is scheduled by a separate DCI for each TRP.

[0052] In the embodiments of the present application, the signaling may be, for example, radio resource control (RRC) signaling; for example, an RRC message, including, for example, an MIB, system information, or a dedicated RRC message; or an RRC information element (RRC IE). The signaling may also be, for example, MAC (Medium Access Control) signaling; or a MAC control element (MAC CE). However, the present application is not limited thereto.

[0053] In the following description, to avoid confusion, the terms "PUCCH" and "physical uplink control channel" or "uplink control information" are interchangeable, and the terms "PUSCH" and "physical uplink data channel" or "uplink data" are also interchangeable. In addition, transmitting or receiving PUCCH can be understood as transmitting or receiving downlink control information carried by PUCCH; transmitting or receiving PUSCH can be understood as transmitting or receiving downlink data carried by PUSCH. The terms "PRACH" and "physical random access channel" or "random access information" are interchangeable. In addition, transmitting or receiving PRACH can be understood as transmitting or receiving random access information carried by PRACH.

[0054] In an embodiment of the present application, the index or identifier of the transmission reception point may include: the index of the control resource pool (control resource pool) corresponding to the transmission reception point, the index or identifier of the transmission reception point, and the index of the reference signal set (RS set) corresponding to the transmission reception point. Therefore, the term "transmission reception point" can also be expressed as "reference signal set" or "control resource pool", etc.

[0055] Embodiments of the first aspect

[0056] An embodiment of the present application provides a power control method, which is explained from the perspective of a terminal device.

[0057] FIG3 is a schematic diagram of a power control method according to an embodiment of the present application. As shown in FIG3 , the method includes:

[0058] 301. A terminal device receives configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission reception point, and / or performs a second uplink transmission with a second transmission reception point;

[0059] 302. The terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor.

[0060] It is worth noting that FIG3 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG3 above.

[0061] FIG4 is a schematic diagram of a scenario of uplink and downlink asymmetric TRP operation in an embodiment of the present application. Uplink and downlink asymmetric TRP operation may also be referred to as asymmetric DL sTRP / UL mTRP (asymmetric DL single TRP / UL multi-TRP) operation. For example, as shown in FIG4 , downlink transmission is based on a single TRP, that is, the UE only receives downlink transmission from one TRP, while uplink transmission is based on multiple TRPs, that is, uplink transmission can be directed to multiple TRPs, such as two TRPs.

[0062] As shown in Figure 4, some UL-only sites (e.g., a second transmission and reception point, hereinafter also referred to as a UL-only TRP or UL-only site) may be deployed in a macro site (e.g., a first transmission and reception point, hereinafter also referred to as a DL / UL TRP or DL / UL site). A macro site is a site with DL / UL, that is, downlink transmissions originate from the macro site, while uplink transmissions can be directed toward the macro site and the UL-only site.

[0063] Because downlink transmissions originate only from sites with DL / UL capabilities, uplink power control for UL-only sites cannot estimate path loss using downlink signals, resulting in a mismatch between the uplink transmission and the path loss reference signal. In an embodiment of the present application, the terminal device calculates the power of the second uplink transmission based on a path loss estimation offset factor, thereby improving the accuracy and reliability of uplink transmissions.

[0064] In some embodiments, the path loss estimation bias factor is for at least one of the following channels or signals: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), a physical random access channel (PRACH), and a sounding reference signal (SRS).

[0065] For example, for PUSCH power control, the path loss estimation bias factor can be added to the calculation formula of PUSCH power control. The path loss estimation bias factor is as follows: ΔPL PUSCH shown.

[0066] In the above formula, b represents the bandwidth part (BWP), f represents the carrier, c represents the serving cell, i represents the transmission occasion, j represents the parameter set configuration, and q represents the number of cells that can be used to transmit data. dRepresents a path loss reference signal, and l represents a power control adjustment state. For the specific meanings of the formulas and related parameters in the embodiments of the present application, reference may be made to the relevant art and will not be repeated here.

[0067] For example, for PUCCH power control, the path loss estimation bias factor can be added to the calculation formula of PUCCH power control. The path loss estimation bias factor is as follows: PUCCH shown.

[0068] For example, for SRS power control, the path loss estimation bias factor can be added to the calculation formula of SRS power control. The path loss estimation bias factor is as follows: ΔPL SRS shown.

[0069] For example, for PRACH power control, the path loss estimation bias factor can be added to the calculation formula of PRACH power control. The path loss estimation bias factor is as follows: ΔPL PRACH shown.

[0070] The above examples illustrate some examples of using the path loss estimation deviation factor to calculate power, but the present application is not limited thereto.

[0071] For another example, for PUSCH power control, the path loss estimation bias factor can be added to the calculation formula of PUSCH power control. The path loss estimation bias factor is as follows: PUSCH As shown. In addition, the scaling factor α can be used PUSCH , the α PUSCH The range is between 0 and 1.

[0072] For another example, for PUCCH power control, the path loss estimation bias factor can be added to the calculation formula of PUCCH power control. The path loss estimation bias factor is as follows: PUCCH As shown. In addition, the scaling factor α can be used PUCCH , the α PUCCH The range is between 0 and 1.

[0073] For another example, for SRS power control, the path loss estimation bias factor can be added to the calculation formula of SRS power control. The path loss estimation bias factor is as follows: SRS As shown. In addition, the scaling factor α can be used SRS , the αSRS The range is between 0 and 1.

[0074] For another example, for PRACH power control, the path loss estimation bias factor can be added to the calculation formula of PRACH power control. The path loss estimation bias factor is as follows: PRACH As shown. In addition, the scaling factor α can be used PRACH , the α PRACH The range is between 0 and 1.

[0075] The above examples illustrate other examples of using the path loss estimation deviation factor to calculate power, but the present application is not limited thereto.

[0076] For another example, for PUSCH power control, the path loss estimation bias factor can be added to the calculation formula of PUSCH power control. The path loss estimation bias factor is as follows: PUSCH shown.

[0077] For another example, for SRS power control, the path loss estimation bias factor can be added to the calculation formula of SRS power control. The path loss estimation bias factor is as follows: SRS shown.

[0078] In some embodiments, the values ​​of the path loss estimation bias factors for PUSCH, PUCCH, SRS, and PRACH may be at least partially the same, for example, ΔPL PUSCH ,ΔPL PUCCH ,ΔPL SRS ,ΔPL PRACH The values ​​of can be all the same, or some (for example, two or more) of them can be the same. PUSCH ,α PUCCH ,α SRS ,α PRACH The values ​​of may be all the same, or some (for example, two or more) thereof may be the same.

[0079] In some embodiments, the values ​​of the path loss estimation bias factors for PUSCH, PUCCH, SRS, and PRACH may be at least partially different, for example, ΔPL PUSCH ,ΔPL PUCCH ,ΔPL SRS ,ΔPL PRACH The values ​​of can be all different, or some (for example, two or more) of them can be different. PUSCH ,α PUCCH ,α SRS ,αPRACH The values ​​of may be all different, or some (for example, two or more) may be different.

[0080] In some embodiments, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same for different bandwidth parts (BWPs) or carriers or serving cells.

[0081] For example, for different BWP(b), the PUSCH path loss estimation deviation factor ΔPL PUSCH are the same, that is, ΔPL PUSCH For different BWP(b), it is common. For another example, for different carriers(f), the PUSCH path loss estimation deviation factor ΔPL PUSCH are the same, that is, ΔPL PUSCH It is common for different carriers (f). For example, for different serving cells (c), the PUSCH path loss estimation deviation factor ΔPL PUSCH are the same, that is, ΔPL PUSCH It is common to different serving cells (c).

[0082] In some embodiments, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different for different bandwidth parts (BWP) or carriers or serving cells.

[0083] For example, for different BWP(b), the PUSCH path loss estimation deviation factor ΔPL PUSCH is different, i.e., ΔPL PUSCH For different BWP (b), it is specific. For example, for different carriers (f), the PUSCH path loss estimation deviation factor ΔPL PUSCH is different, i.e., ΔPL PUSCH For different carriers (f), it is specific. For example, for different serving cells (c), the PUSCH path loss estimation deviation factor ΔPL PUSCH is different, i.e., ΔPL PUSCH It is specific to different serving cells (c).

[0084] In some embodiments, for different path loss reference signals, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same.

[0085] For example, for different path loss reference signals (q d), PUSCH path loss estimation bias factor ΔPL PUSCH are the same, that is, ΔPL PUSCH For different path loss reference signals (q d ) is public.

[0086] In some embodiments, for different path loss reference signals, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different.

[0087] For example, for different path loss reference signals (q d ), PUSCH path loss estimation bias factor ΔPL PUSCH is different, i.e., ΔPL PUSCH For different path loss reference signals (q d ) is specific.

[0088] In some embodiments, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same for different PUSCH power control adjustment states.

[0089] For example, for different PUSCH power control adjustment states (l), the PUSCH path loss estimation deviation factor ΔPL PUSCH are the same, that is, ΔPL PUSCH The power control adjustment state (l) is common to different PUSCHs.

[0090] In some embodiments, the path loss estimation bias factor for the Physical Uplink Shared Channel (PUSCH) is different for different PUSCH power control adjustment states.

[0091] For example, for different PUSCH power control adjustment states (l), the PUSCH path loss estimation deviation factor ΔPL PUSCH is different, i.e., ΔPL PUSCH The power control adjustment state (l) is specific to different PUSCHs.

[0092] In some embodiments, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same for different PUSCH transmission opportunities.

[0093] For example, for different PUSCH transmission opportunities (i), the PUSCH path loss estimation deviation factor ΔPL PUSCH are the same, that is, ΔPL PUSCH (i) is common to different PUSCH transmission opportunities.

[0094] In some embodiments, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different for different PUSCH transmission opportunities.

[0095] For example, for different PUSCH transmission opportunities (i), the PUSCH path loss estimation deviation factor ΔPL PUSCH is different, i.e., ΔPL PUSCH The PUSCH transmission opportunity (i) is specific to different PUSCH transmission opportunities.

[0096] In some embodiments, for different parameter set configurations, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same.

[0097] For example, for different parameter set configurations (j), the PUSCH path loss estimation deviation factor ΔPL PUSCH are the same, i.e., ΔPL PUSCH The configuration (j) is common to different parameter sets.

[0098] In some embodiments, for different parameter set configurations, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different.

[0099] For example, for different parameter set configurations (j), the PUSCH path loss estimation deviation factor ΔPL PUSCH is different, i.e., ΔPL PUSCH The configuration (j) is specific to different parameter sets.

[0100] The above schematically illustrates the PUSCH path loss estimation bias factor. The following describes the PUCCH path loss estimation bias factor.

[0101] In some embodiments, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is the same for different partial bandwidths (BWPs) or carriers or serving cells.

[0102] For example, for different BWP(b), the PUCCH path loss estimation deviation factor ΔPL PUCCH are the same, that is, ΔPL PUCCH For different BWP(b), it is common. For another example, for different carriers(f), the PUCCH path loss estimation deviation factor ΔPL PUCCH are the same, that is, ΔPL PUCCH It is common for different carriers (f). For example, for different serving cells (c), the PUCCH path loss estimation deviation factor ΔPL PUCCHare the same, that is, ΔPL PUCCH It is common to different serving cells (c).

[0103] In some embodiments, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is different for different bandwidth fractions (BWPs) or carriers or serving cells;

[0104] For example, for different BWP(b), the PUCCH path loss estimation deviation factor ΔPL PUCCH is different, i.e., ΔPL PUCCH For different BWP(b), it is specific. For example, for different carriers(f), the PUCCH path loss estimation deviation factor ΔPL is PUCCH is different, i.e., ΔPL PUCCH For different carriers (f), it is specific. For example, for different serving cells (c), the PUCCH path loss estimation deviation factor ΔPL PUCCH is different, i.e., ΔPL PUCCH It is specific to different serving cells (c).

[0105] In some embodiments, for different path loss reference signals, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is the same.

[0106] For example, for different path loss reference signals (q d ), PUCCH path loss estimation bias factor ΔPL PUCCH are the same, that is, ΔPL PUCCH For different path loss reference signals (q d ) is public.

[0107] In some embodiments, for different path loss reference signals, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is different.

[0108] For example, for different path loss reference signals (q d ), PUCCH path loss estimation bias factor ΔPL PUCCH is different, i.e., ΔPL PUCCH For different path loss reference signals (q d ) is specific.

[0109] In some embodiments, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is the same for different PUCCH power control adjustment states.

[0110] For example, for different PUCCH power control adjustment states (l), the PUCCH path loss estimation deviation factor ΔPL PUCCH are the same, that is, ΔPL PUCCH The power control adjustment state (l) is common to different PUSCHs.

[0111] In some embodiments, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is different for different PUCCH power control adjustment states.

[0112] For example, for different PUCCH power control adjustment states (l), the PUCCH path loss estimation deviation factor ΔPL PUCCH is different, i.e., ΔPL PUCCH The power control adjustment state (l) is specific to different PUCCHs.

[0113] In some embodiments, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is the same for different PUCCH transmission opportunities.

[0114] For example, for different PUCCH transmission opportunities (i), the PUCCH path loss estimation deviation factor ΔPL PUCCH are the same, that is, ΔPL PUCCH (i) is common to different PUCCH transmission opportunities.

[0115] In some embodiments, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is different for different PUCCH transmission opportunities.

[0116] For example, for different PUCCH transmission opportunities (i), the PUCCH path loss estimation deviation factor ΔPL PUCCH is different, i.e., ΔPL PUCCH The PUCCH transmission opportunity (i) is specific to different PUCCH transmission opportunities.

[0117] The above schematically illustrates the PUCCH path loss estimation bias factor. The following describes the SRS path loss estimation bias factor.

[0118] In some embodiments, the path loss estimation bias factor for a sounding reference signal (SRS) is the same for different bandwidth fractions (BWPs) or carriers or serving cells.

[0119] For example, for different BWP(b), the path loss estimation deviation factor ΔPL of SRS is SRS are the same, that is, ΔPL SRS It is common for different BWP(b). For another example, for different carriers(f), the path loss estimation deviation factor ΔPL of SRS is SRS are the same, that is, ΔPL SRS It is common for different carriers (f). For example, for different serving cells (c), the SRS path loss estimation deviation factor ΔPL SRS are the same, that is, ΔPL SRS It is common to different serving cells (c).

[0120] In some embodiments, the path loss estimation bias factor for a sounding reference signal (SRS) is different for different bandwidth fractions (BWPs) or carriers or serving cells.

[0121] For example, for different BWP(b), the path loss estimation deviation factor ΔPL of SRS is SRS is different, i.e., ΔPL SRS For different BWP (b), it is specific. For example, for different carriers (f), the path loss estimation deviation factor ΔPL of SRS is SRS is different, i.e., ΔPL SRS For different carriers (f), the path loss estimation bias factor ΔPL of SRS is specific. SRS is different, i.e., ΔPL SRS It is specific to different serving cells (c).

[0122] In some embodiments, the path loss estimation bias factor for a sounding reference signal (SRS) is the same for different path loss reference signals.

[0123] For example, for different path loss reference signals (q d ), SRS path loss estimation bias factor ΔPL SRS are the same, that is, ΔPL SRS For different path loss reference signals (q d ) is public.

[0124] In some embodiments, for different path loss reference signals, the path loss estimation bias factor used for a sounding reference signal (SRS) is different.

[0125] For example, for different path loss reference signals (q d ), SRS path loss estimation bias factor ΔPL SRS is different, i.e., ΔPL SRS For different path loss reference signals (q d ) is specific.

[0126] In some embodiments, the path loss estimation bias factor for a sounding reference signal (SRS) is the same for different SRS power control adjustment states.

[0127] For example, for different SRS power control adjustment states (l), the SRS path loss estimation deviation factor ΔPL SRS are the same, that is, ΔPL SRS The power control adjustment state (l) is common to different SRSs.

[0128] In some embodiments, the path loss estimation bias factor for a sounding reference signal (SRS) is different for different SRS power control adjustment states.

[0129] For example, for different SRS power control adjustment states (l), the SRS path loss estimation deviation factor ΔPL SRS is different, i.e., ΔPL SRS The power control adjustment state (l) is specific to different SRS states.

[0130] In some embodiments, the path loss estimation bias factor for a sounding reference signal (SRS) is the same for different SRS transmission opportunities.

[0131] For example, for different SRS transmission opportunities (i), the SRS path loss estimation deviation factor ΔPL SRS are the same, that is, ΔPL SRS The (i) transmission opportunity is common to different SRSs.

[0132] In some embodiments, the path loss estimation bias factor for a sounding reference signal (SRS) is different for different SRS transmission opportunities.

[0133] For example, for different SRS transmission opportunities (i), the SRS path loss estimation deviation factor ΔPL SRS is different, i.e., ΔPL SRS The transmission opportunity (i) is specific to different SRSs.

[0134] The above schematically illustrates the path loss estimation deviation factor of the SRS, and the present application is not limited thereto.

[0135] In some embodiments, for a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH), a power control adjustment state is associated with the second transmission reception point; wherein the power control adjustment state associated with the second transmission reception point is predefined, or configured through RRC, or indicated through MAC CE and / or DCI.

[0136] For example, in asymmetric DL sTRP / UL mTRP operation, for PUSCH / PUCCH, a power control adjustment state (e.g., a first power control state or a second power control state) can be associated with a UL-only site. As to which power control state is associated with the UL-only site, it can be predefined or configured (e.g., via RRC). Alternatively, which power control state is associated with the UL-only site can be changed dynamically, for example, via MAC CE and / or DCI indication.

[0137] In some embodiments, the association between the power control adjustment state and the second transmission reception point is configured via an association between the power control adjustment state and the path loss estimation bias factor.

[0138] For example, the association between the power control state and the UL-only site (second association) can be configured through the association between the power control state and the path loss estimation bias factor (first association). For example, one power control state (e.g., the second power control state) can be associated with the path loss estimation bias factor, while the other power control state (e.g., the first power control state) is not associated with the path loss estimation bias factor.

[0139] In some embodiments, the power control adjustment state of the physical uplink shared channel (PUSCH) and / or the power control adjustment state of the physical uplink control channel (PUCCH) is associated with the path loss estimation deviation factor; for the power control adjustment state of the first transmission receiving point, the path loss estimation deviation factor is set to zero; for the power control adjustment state of the second transmission receiving point, the path loss estimation deviation factor is set to non-zero.

[0140] For example, both PUSCH / PUCCH power control states can be associated with a path loss estimation bias factor. For the power control state targeting a site with both DL and UL (UL / DL site), the path loss estimation bias factor is set to zero. For the power control state targeting a UL-only site (UL-only site), the path loss estimation bias factor can be set to non-zero.

[0141] In some embodiments, the path loss estimation bias factor is configured for the TCI state of the physical uplink shared channel (PUSCH) and / or the physical uplink control channel (PUCCH), and the TCI state includes: a joint DL / UL TCI state, a separate UL TCI state, or a separate DL TCI state.

[0142] For example, the path loss estimation bias factor may configure the TCI state of PUSCH / PUCCH (eg, RRC IE TCI-state or TCI-UL-state), where the TCI state may be a joint DL / UL TCI state, a separate UL TCI state, or a separate DL TCI state.

[0143] In some embodiments, the path loss estimation bias factor is configured for a path loss reference signal of a physical uplink shared channel (PUSCH) and / or a physical uplink control channel (PUCCH).

[0144] The above description is based on the case of PUSCH / PUCCH, and the following description will schematically illustrate the case of SRS.

[0145] In some embodiments, for a sounding reference signal (SRS), a power control adjustment state is associated with the second transmission reception point; wherein the power control adjustment state associated with the second transmission reception point is predefined, or configured through RRC, or indicated through MAC CE and / or DCI.

[0146] For example, in asymmetric DL sTRP / UL mTRP operation, for SRS, one power control adjustment state for SRS can be associated with a UL-only site. Which power control state is associated with the UL-only site can be predefined or configured, for example, via RRC configuration. Alternatively, which power control state is associated with the UL-only site can be dynamically changed, for example, via MAC-CE or DCI indication.

[0147] In some embodiments, the power control adjustment state associated with the second transmission reception point includes at least one of the following:

[0148] The same first closed-loop power control state for SRS as for PUSCH;

[0149] The same second closed-loop power control state for SRS as for PUSCH;

[0150] a first closed-loop power control state for SRS that is different from that for PUSCH;

[0151] A second closed-loop power control state for SRS that is different from that for PUSCH.

[0152] For example, the second closed-loop power control state of the SRS that is the same as the PUSCH is associated with the UL-only site, and the second closed-loop power control state of the SRS that is different from the PUSCH is also associated with the UL-only site.

[0153] In some embodiments, the association between the power control adjustment state and the second transmission reception point is configured via an association between the power control adjustment state and the path loss estimation bias factor.

[0154] For example, the association between the power control state and the UL-only site (second association) can be configured by the association between the power control state and the path loss estimation bias factor (first association). For example, some power control states can be associated with the path loss estimation bias factor, while other power control states are not associated with the path loss estimation bias factor.

[0155] In some embodiments, at least a portion of the power control adjustment state of the sounding reference signal (SRS) is associated with the path loss estimation bias factor; for the power control adjustment state of the first transmission receiving point, the path loss estimation bias factor is set to zero; for the power control adjustment state of the second transmission receiving point, the path loss estimation bias factor is set to non-zero.

[0156] For example, all (or a subset) of the SRS power control states can be associated with a path loss estimation bias factor. For power control states targeting sites with both DL and UL capabilities (UL / DL sites), the path loss estimation bias factor is set to zero. For power control states targeting UL-only sites (UL-only sites), the path loss estimation bias factor can be set to non-zero.

[0157] In some embodiments, the path loss estimation bias factor is configured for the TCI state of a sounding reference signal (SRS), wherein the TCI state includes: a joint DL / UL TCI state, a separate UL TCI state, or a separate DL TCI state.

[0158] For example, the path loss estimation bias factor may configure the TCI state of the SRS (eg, RRC IE TCI-state or TCI-UL-state), where the TCI state may be a joint DL / UL TCI state, a separate UL TCI state, or a separate DL TCI state.

[0159] In some embodiments, the path loss estimation bias factor is configured for a path loss reference signal of a sounding reference signal (SRS).

[0160] In some embodiments, the terminal device sends a sounding reference signal, where the sounding reference signal has a predefined power or a configured power, and the sounding reference signal is used by the network device to calculate the path loss estimation deviation factor.

[0161] Figure 5 is an example diagram of calculating a path loss estimation bias factor in an embodiment of the present application. As shown in Figure 5, to determine the value of the path loss estimation bias factor, the network device can configure the transmit power of the SRS (as shown in 501), the terminal device can transmit an SRS with a predefined / configured Tx power (as shown in 502), and both the DL / UL site and the UL-only site can receive the SRS, so that the network side can calculate the value of the path loss estimation bias factor (as shown in 503). The network device can configure / or adjust the path loss estimation bias factor for the subsequent uplink transmission (as shown in 504).

[0162] For example, one or more or all of the following SRS usage parameters may be applied to SRS transmission with configured / predefined transmission power: codebook, non-codebook, antenna switching, and beam management.

[0163] For another example, a new SRS usage parameter may be introduced, such as SRS usage for power control.

[0164] For another example, the path loss estimation bias factor can be determined using SRSs with different Tx beams. SRSs with predetermined transmit power can be transmitted using different Tx beams, targeting UL-only sites and sites with DL / UL, respectively.

[0165] In some embodiments, the path loss estimation bias factor is predefined or configured with one or more values, and / or a value for a physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) / sounding reference signal (SRS) is configured or indicated.

[0166] For example, a set / group / list of values ​​of the path loss estimation bias factor may be predefined / configured, and the value of the path loss estimation bias factor applied to PUSCH / PUCCH / SRS may be further configured or indicated (RRC and / or MAC CE and / or DCI).

[0167] For another example, the value of the path loss estimation deviation factor can be determined by AI / ML.

[0168] In some embodiments, multiple second transmission reception points are configured in the same cell, and multiple path loss estimation deviation factors are configured or indicated.

[0169] For example, more than one UL-only site may be deployed in the same cell, and accordingly, more than one path loss estimation bias factor may be configured. For example, a path loss estimation bias factor may be configured or indicated for each UL-only site. For another example, a path loss estimation bias factor may be configured, and the value of the path loss estimation bias factor may be further configured / indicated for different UL-only sites.

[0170] In some embodiments, the path loss estimation bias factor is applied to closed-loop power control and / or open-loop power control.

[0171] For example, the path loss estimation bias factor may be applied to closed-loop power control, or the path loss estimation bias factor may be applied to open-loop power control, or the path loss estimation bias factor may be applied to both closed-loop power control and open-loop power control.

[0172] The above schematically illustrates the path loss estimation deviation factor. The following schematically illustrates the power headroom (PHR) report of this application.

[0173] In some embodiments, the path loss estimation bias factor is used for at least one of the following PHRs:

[0174] Type-1 PHR based on actual PUSCH transmission (also called Type-1 PHR, actual PHR);

[0175] Type 1 PHR (also called Type-1 PHR, virtual PHR) based on the reference PUSCH transmission;

[0176] A third type of PHR based on actual SRS transmission (referred to as Type-3 PHR, actual PHR);

[0177] A third type of PHR (may be referred to as Type-3 PHR, virtual PHR) is based on reference SRS transmission.

[0178] For example, the Type-1 PHR based on actual PUSCH transmission is calculated using the following formula:

[0179] For example, the Type-1 PHR based on the reference PUSCH transmission is calculated using the following formula: PH type1,b,f,c (i,j,q d ,l) =P CMAX,f,c (i)-{P 0_PUSCH,b,f,c (j)+α b,f,c (j) PL b,f,c (q d )+f b,f,c (i,l)+ΔPL PUSCH}

[0180] For example, the Type-3 PHR based on actual SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ) = P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i))+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i)+ΔPL SRS}

[0181] For example, the Type-3 PHR based on the reference SRS transmission is calculated using the following formula: type3,b,f,c (i,q s )=P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i)+ΔPL SRS}

[0182] For another example, the Type-1 PHR based on actual PUSCH transmission is calculated using the following formula:

[0183] For another example, the Type-1 PHR based on the reference PUSCH transmission is calculated using the following formula: PH type1,b,f,c (i,j,q d ,l) =P CMAX,f,c(i)-{P 0_PUSCH,b,f,c (j)+α b,f,c (j) PL b,f,c (q d )+f b,f,c (i,l)+α PUSCH ΔPL PUSCH}

[0184] For another example, the Type-3 PHR based on actual SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ) = P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i))+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i)+α SRS ΔPL SRS}

[0185] For another example, the Type-3 PHR based on the reference SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ) = P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i)+α SRS ΔPL SRS}

[0186] For another example, the Type-1 PHR based on actual PUSCH transmission is calculated using the following formula:

[0187] For another example, the Type-1 PHR based on the reference PUSCH transmission is calculated using the following formula: PH type1,b,f,c (i,j,q d ,l) =P CMAX,f,c (i)-{P 0_PUSCH,b,f,c (j)+α b,f,c (j)·(PL b,f,c (q d )+ΔPL PUSCH )+f b,f,c (i,l)}

[0188] For another example, the Type-3 PHR based on actual SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ) = P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i))+α SRS,b,f,c (q s )·(PL b,f,c (q d )+ΔPL SRS )+h b,f,c (i)}

[0189] For another example, the Type-3 PHR based on the reference SRS transmission is calculated using the following formula: type3,b,f,c (i,q s )=P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+α SRS,b,f,c (q s )·(PL b,f,c (q d )+ΔPL SRS )+h b,f,c (i)}

[0190] In some embodiments, the third type PHR based on the actual SRS transmission and / or the third type PHR based on the reference SRS transmission is associated with a closed-loop power control state (1) for the SRS; wherein the closed-loop power control state for the SRS is at least one of the following:

[0191] The same first closed-loop power control state for SRS as for PUSCH;

[0192] The same second closed-loop power control state for SRS as for PUSCH;

[0193] a first closed-loop power control state for SRS that is different from that for PUSCH;

[0194] A second closed-loop power control state for SRS that is different from that for PUSCH.

[0195] In some embodiments, the third type PHR based on the actual SRS transmission and / or the third type PHR based on the reference SRS transmission is associated with a closed-loop power control state (1) for the SRS; wherein the closed-loop power control state for the SRS is at least one of the following:

[0196] a first closed-loop power control state for SRS that is different from that for PUSCH;

[0197] A second closed-loop power control state for SRS that is different from that for PUSCH.

[0198] For example, the Type-3 PHR based on actual SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ,l) =P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i))+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i,l)+ΔPL SRS}

[0199] For example, the Type-3 PHR based on the reference SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ,l) =P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i,l)+ΔPL SRS}

[0200] For another example, the Type-3 PHR based on actual SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ,l) =P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i))+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i,l)+α SRS ΔPL SRS}

[0201] For another example, the Type-3 PHR based on the reference SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ,l) =P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i,l)+α SRS ΔPL SRS}

[0202] For another example, the Type-3 PHR based on actual SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ,l) =P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i))+α SRS,b,f,c (q s )·(PL b,f,c (q d )+ΔPL SRS )+h b,f,c (i,l)}

[0203] For another example, the Type-3 PHR based on the reference SRS transmission is calculated using the following formula: type3,b,f,c (i,q s ,l) =P CMAX,f,c (i)-{P 0_SRS,b,f,c (q s )+α SRS,b,f,c (q s )·(PL b,f,c (q d )+ΔPL SRS )+h b,f,c (i,l)}

[0204] In some embodiments, in the MAC CE for PHR reporting, the SRS power control state is indicated.

[0205] In one example, for example, whether the SRS power control state is the same as or different from the PUSCH may be indicated in the MAC-CE. For example, if the SRS power control state is indicated as the same as the PUSCH, two Type-3 PHRs may be reported in the MAC CE, for example, the first one for the first SRS power control state that is the same as the PUSCH, and the second one for the second SRS power control state that is the same as the PUSCH.

[0206] For another example, if the SRS power control state is indicated to be different from PUSCH, two Type-3 PHRs may be reported in the MAC CE, eg, the first for a first SRS power control state different from PUSCH and the second for a second SRS power control state different from PUSCH.

[0207] In another example, more than two Type-3 PHRs (e.g., 3 or 4) may be reported in a MAC CE. For each Type-3 PHR reported in a MAC CE, an SRS power control state may be indicated. The indication of the SRS power control state may be explicit or implicit.

[0208] In yet another example, a Type-3 PHR may be reported in a MAC CE. For the Type-3 PHR reported in the MAC CE, the SRS power control state is indicated.

[0209] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0210] It can be seen from the above embodiments that the terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor, so that appropriate power control can be performed even in an uplink and downlink asymmetric TRP operation scenario, which can improve the accuracy and reliability of the uplink transmission.

[0211] Embodiments of the second aspect

[0212] The embodiment of the present application provides a power control method, which is described from the perspective of a network device. The embodiment of the second aspect can be combined with the embodiment of the first aspect, and the same contents as the embodiment of the first aspect will not be repeated.

[0213] FIG6 is a schematic diagram of a power control method according to an embodiment of the present application. As shown in FIG6 , the method includes:

[0214] 601. A network device sends configuration information of uplink transmission to a terminal device; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point.

[0215] As shown in FIG6 , the method may further include:

[0216] 602. The terminal device calculates the power of the second uplink transmission according to the path loss estimation deviation factor.

[0217] It is worth noting that FIG6 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG6 above.

[0218] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0219] Through the embodiments of the present application, the terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor, so that appropriate power control can be performed even in an uplink and downlink asymmetric TRP operation scenario, which can improve the accuracy and reliability of the uplink transmission.

[0220] Embodiments of the third aspect

[0221] The embodiment of the present application provides a power control device, which may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device, and the same contents as those in the embodiment of the first aspect will not be repeated here.

[0222] FIG7 is a schematic diagram of a power control device according to an embodiment of the present application. As shown in FIG7 , the power control device 700 includes:

[0223] A receiving unit 701 receives configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission reception point, and / or performs a second uplink transmission with a second transmission reception point;

[0224] The processing unit 702 calculates the power of the second uplink transmission according to the path loss estimation deviation factor.

[0225] In some embodiments, the path loss estimation bias factor is for at least one of the following channels or signals: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), a physical random access channel (PRACH), and a sounding reference signal (SRS).

[0226] In some embodiments, for different bandwidth parts (BWPs) or carriers or serving cells, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same, or the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different;

[0227] and / or, for different path loss reference signals, the path loss estimation bias factors for the physical uplink shared channel (PUSCH) are the same, or the path loss estimation bias factors for the physical uplink shared channel (PUSCH) are different;

[0228] and / or, for different PUSCH power control adjustment states, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same, or the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different;

[0229] and / or, for different PUSCH transmission opportunities, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same, or the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different;

[0230] And / or, for different parameter set configurations, the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is the same, or the path loss estimation bias factor for the physical uplink shared channel (PUSCH) is different.

[0231] In some embodiments, for different partial bandwidths (BWPs) or carriers or serving cells, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is the same, or the path loss estimation bias factor for the physical uplink control channel (PUCCH) is different;

[0232] and / or, for different path loss reference signals, the path loss estimation bias factors for the physical uplink control channel (PUCCH) are the same, or the path loss estimation bias factors for the physical uplink control channel (PUCCH) are different;

[0233] and / or, for different PUCCH power control adjustment states, the path loss estimation bias factor for the physical uplink control channel (PUCCH) is the same, or the path loss estimation bias factor for the physical uplink control channel (PUCCH) is different;

[0234] And / or, for different PUCCH transmission opportunities, the path loss estimation bias factors for the physical uplink control channel (PUCCH) are the same, or the path loss estimation bias factors for the physical uplink control channel (PUCCH) are different.

[0235] In some embodiments, for different bandwidth portions (BWPs) or carriers or serving cells, the path loss estimation bias factor for a sounding reference signal (SRS) is the same, or the path loss estimation bias factor for a sounding reference signal (SRS) is different;

[0236] and / or, for different path loss reference signals, the path loss estimation bias factors used for the sounding reference signal (SRS) are the same, or the path loss estimation bias factors used for the sounding reference signal (SRS) are different;

[0237] and / or, for different SRS power control adjustment states, the path loss estimation bias factor for a sounding reference signal (SRS) is the same, or the path loss estimation bias factor for a sounding reference signal (SRS) is different;

[0238] And / or, for different SRS transmission opportunities, the path loss estimation bias factors used for the sounding reference signal (SRS) are the same, or the path loss estimation bias factors used for the sounding reference signal (SRS) are different.

[0239] In some embodiments, for a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH), a power control adjustment state is associated with the second transmission reception point;

[0240] The power control adjustment state associated with the second transmission reception point is predefined, or configured through RRC, or indicated through MAC CE and / or DCI.

[0241] In some embodiments, the association between the power control adjustment state and the second transmission reception point is configured via an association between the power control adjustment state and the path loss estimation bias factor.

[0242] In some embodiments, the power control adjustment state of the physical uplink shared channel (PUSCH) and / or the power control adjustment state of the physical uplink control channel (PUCCH) is associated with the path loss estimation deviation factor; for the power control adjustment state of the first transmission receiving point, the path loss estimation deviation factor is set to zero; for the power control adjustment state of the second transmission receiving point, the path loss estimation deviation factor is set to non-zero.

[0243] In some embodiments, the path loss estimation bias factor is configured for the TCI state of the physical uplink shared channel (PUSCH) and / or the physical uplink control channel (PUCCH), and the TCI state includes: a joint DL / UL TCI state, a separate UL TCI state, or a separate DL TCI state.

[0244] In some embodiments, the path loss estimation bias factor is configured for a path loss reference signal of a physical uplink shared channel (PUSCH) and / or a physical uplink control channel (PUCCH).

[0245] In some embodiments, for a sounding reference signal (SRS), a power control adjustment state is associated with the second transmission reception point;

[0246] The power control adjustment state associated with the second transmission reception point is predefined, or configured through RRC, or indicated through MAC CE and / or DCI.

[0247] In some embodiments, the power control adjustment state associated with the second transmission reception point includes at least one of the following:

[0248] The same first closed-loop power control state for SRS as for PUSCH;

[0249] The same second closed-loop power control state for SRS as for PUSCH;

[0250] a first closed-loop power control state for SRS that is different from that for PUSCH;

[0251] A second closed-loop power control state for SRS that is different from that for PUSCH.

[0252] In some embodiments, the association between the power control adjustment state and the second transmission reception point is configured via an association between the power control adjustment state and the path loss estimation bias factor.

[0253] In some embodiments, at least a portion of the power control adjustment state of the sounding reference signal (SRS) is associated with the path loss estimation bias factor; for the power control adjustment state of the first transmission receiving point, the path loss estimation bias factor is set to zero; for the power control adjustment state of the second transmission receiving point, the path loss estimation bias factor is set to non-zero.

[0254] In some embodiments, the path loss estimation bias factor is configured for the TCI state of a sounding reference signal (SRS), wherein the TCI state includes: a joint DL / UL TCI state, a separate UL TCI state, or a separate DL TCI state.

[0255] In some embodiments, the path loss estimation bias factor is configured for a path loss reference signal of a sounding reference signal (SRS).

[0256] In some embodiments, as shown in FIG7 , the apparatus may further include:

[0257] The sending unit 703 sends a sounding reference signal, where the sounding reference signal has a predefined power or a configured power. The sounding reference signal is used by the network device to calculate the path loss estimation deviation factor.

[0258] In some embodiments, the path loss estimation bias factor is predefined or configured with one or more values, and / or a value for a physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) / sounding reference signal (SRS) is configured or indicated.

[0259] In some embodiments, multiple second transmission reception points are configured in the same cell, and multiple path loss estimation deviation factors are configured or indicated.

[0260] In some embodiments, the path loss estimation bias factor is applied to closed-loop power control and / or open-loop power control.

[0261] In some embodiments, the path loss estimation bias factor is used for a power headroom (PHR) of at least one of the following:

[0262] A first type of PHR based on actual PUSCH transmission;

[0263] A first type of PHR based on a reference PUSCH transmission;

[0264] A third type of PHR based on actual SRS transmission;

[0265] A third type of PHR based on reference SRS transmission.

[0266] In some embodiments, the third type PHR based on the actual SRS transmission and / or the third type PHR based on the reference SRS transmission is associated with a closed-loop power control state for the SRS; wherein the closed-loop power control state for the SRS is at least one of the following:

[0267] The same first closed-loop power control state for SRS as for PUSCH;

[0268] The same second closed-loop power control state for SRS as for PUSCH;

[0269] a first closed-loop power control state for SRS that is different from that for PUSCH;

[0270] A second closed-loop power control state for SRS that is different from that for PUSCH.

[0271] Alternatively, the third type PHR based on the actual SRS transmission and / or the third type PHR based on the reference SRS transmission is associated with a closed-loop power control state for the SRS; wherein the closed-loop power control state for the SRS is at least one of the following:

[0272] a first closed-loop power control state for SRS that is different from that for PUSCH;

[0273] A second closed-loop power control state for SRS that is different from that for PUSCH.

[0274] In some embodiments, the power control state of the SRS is indicated in the MAC CE for power headroom (PHR) reporting.

[0275] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The power control device 700 may also include other components or modules. For details of these components or modules, reference may be made to related technologies.

[0276] In addition, for the sake of simplicity, FIG7 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0277] Through the embodiments of the present application, the terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor, so that appropriate power control can be performed even in an uplink and downlink asymmetric TRP operation scenario, which can improve the accuracy and reliability of the uplink transmission.

[0278] Embodiments of the fourth aspect

[0279] The present embodiment provides a power control device, which may be, for example, a network device, or one or more components or assemblies configured in the network device, and the same contents as those in the first to third aspects of the embodiment will not be repeated.

[0280] FIG8 is a schematic diagram of a power control device according to an embodiment of the present application. As shown in FIG10 , the power control device 800 includes:

[0281] A sending unit 801 sends configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

[0282] In some embodiments, as shown in FIG8 , the apparatus may further include:

[0283] The receiving unit 802 receives a sounding reference signal, where the sounding reference signal has a predefined power or a configured power, and the sounding reference signal is used by a network device to calculate the path loss estimation deviation factor.

[0284] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The power control device 800 may also include other components or modules. For details of these components or modules, please refer to the relevant art.

[0285] In addition, for the sake of simplicity, FIG8 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0286] Through the embodiments of the present application, the terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor, so that appropriate power control can be performed even in an uplink and downlink asymmetric TRP operation scenario, which can improve the accuracy and reliability of the uplink transmission.

[0287] Embodiments of the fifth aspect

[0288] An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those in the first to fourth aspects of the embodiments will not be repeated.

[0289] In some embodiments, the communication system 100 may include at least:

[0290] A network device that sends configuration information for uplink transmission;

[0291] A terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

[0292] The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

[0293] Figure 9 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in Figure 9 , terminal device 900 may include a processor 910 and a memory 920. Memory 920 stores data and programs and is coupled to processor 910. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

[0294] For example, the processor 910 may be configured to execute a program to implement the power control method as described in the embodiment of the first aspect. For example, the processor 910 may be configured to perform the following control: receiving configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission reception point, and / or performs a second uplink transmission with a second transmission reception point; and calculating the power of the second uplink transmission based on a path loss estimation deviation factor.

[0295] As shown in Figure 9 , the terminal device 900 may further include: a communication module 930, an input unit 940, a display 950, and a power supply 960. The functions of these components are similar to those in the prior art and are not described in detail here. It is worth noting that the terminal device 900 does not necessarily include all of the components shown in Figure 9 , and these components are not essential. Furthermore, the terminal device 900 may also include components not shown in Figure 9 , for which reference may be made to the prior art.

[0296] An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

[0297] Figure 10 is a schematic diagram illustrating the structure of a network device according to an embodiment of the present application. As shown in Figure 10 , network device 1000 may include a processor 1010 (e.g., a central processing unit (CPU)) and a memory 1020; memory 1020 is coupled to processor 1010. Memory 1020 may store various data and may also store an information processing program 1030, which is executed under the control of processor 1010.

[0298] For example, the processor 1010 may be configured to execute a program to implement the power control method as described in the embodiment of the second aspect. For example, the processor 1010 may be configured to perform the following control: sending configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission reception point, and / or performs a second uplink transmission with a second transmission reception point; and the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

[0299] In addition, as shown in FIG10 , the network device 1000 may further include: a transceiver 1040 and an antenna 1050; wherein, the functions of the above components are similar to those in the prior art and are not described in detail here. It is worth noting that the network device 1000 does not necessarily include all the components shown in FIG10 ; in addition, the network device 1000 may also include components not shown in FIG10 , and reference may be made to the prior art for details.

[0300] An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the power control method described in the embodiment of the first aspect.

[0301] An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the power control method described in the embodiment of the first aspect.

[0302] An embodiment of the present application also provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the power control method described in the embodiment of the second aspect.

[0303] An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the power control method described in the embodiment of the second aspect.

[0304] The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0305] The method / device described in conjunction with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and / or one or more combinations of functional block diagrams can correspond to various software modules of the computer program flow or to various hardware modules. These software modules can respectively correspond to the various steps shown in the figure. These hardware modules can be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0306] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0307] One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in this application. One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0308] The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

[0309] Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

[0310] 1. A power control method, comprising:

[0311] The terminal device receives configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission reception point, and / or performs a second uplink transmission with a second transmission reception point;

[0312] The terminal device calculates the power of the second uplink transmission based on the path loss estimation deviation factor.

[0313] 2. A power control method, comprising:

[0314] The network device sends configuration information for uplink transmission; wherein the terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

[0315] 3. A terminal device comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the power control method as described in Note 1.

[0316] 4. A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the power control method as described in Note 2.

[0317] 5. A computer program product, comprising at least a computer program, wherein when the computer program is executed by a processor, the terminal device executes the power control method as described in Note 1.

[0318] 6. A computer program product, comprising at least a computer program, wherein when the computer program is executed by a processor, the network device executes the power control method as described in Note 2.

Claims

1. A power control device, comprising: a receiving unit, configured to receive configuration information for uplink transmission; The terminal device performs a first uplink transmission and a first downlink transmission with the first transmission reception point, and / or performs a second uplink transmission with the second transmission reception point; A processing unit calculates the power of the second uplink transmission according to a path loss estimation deviation factor.

2. The device according to claim 1, wherein The path loss estimation deviation factor is for at least one of the following channels or signals: a physical uplink shared channel, a physical uplink control channel, a physical random access channel, and a sounding reference signal.

3. The device according to claim 1, wherein For different partial bandwidths or carriers or serving cells, the path loss estimation bias factors for the physical uplink shared channel are the same, or the path loss estimation bias factors for the physical uplink shared channel are different; and / or, for different path loss reference signals, the path loss estimation bias factors used for the physical uplink shared channel are the same, or the path loss estimation bias factors used for the physical uplink shared channel are different; and / or, for different physical uplink shared channel power control adjustment states, the path loss estimation bias factors for the physical uplink shared channel are the same, or the path loss estimation bias factors for the physical uplink shared channel are different; and / or, for different physical uplink shared channel transmission opportunities, the path loss estimation bias factors used for the physical uplink shared channel are the same, or the path loss estimation bias factors used for the physical uplink shared channel are different; And / or, for different parameter set configurations, the path loss estimation bias factors used for the physical uplink shared channel are the same, or the path loss estimation bias factors used for the physical uplink shared channel are different.

4. The device according to claim 1, wherein For different partial bandwidths or carriers or serving cells, the path loss estimation bias factors for the physical uplink control channel are the same, or the path loss estimation bias factors for the physical uplink control channel are different; and / or, for different path loss reference signals, the path loss estimation bias factors used for the physical uplink control channel are the same, or the path loss estimation bias factors used for the physical uplink control channel are different; and / or, for different physical uplink control channel power control adjustment states, the path loss estimation bias factors used for the physical uplink control channel are the same, or the path loss estimation bias factors used for the physical uplink control channel are different; And / or, for different physical uplink control channel transmission opportunities, the path loss estimation bias factors used for the physical uplink control channel are the same, or the path loss estimation bias factors used for the physical uplink control channel are different.

5. The device according to claim 1, wherein For different partial bandwidths or carriers or serving cells, the path loss estimation bias factors used for the sounding reference signal are the same, or the path loss estimation bias factors used for the sounding reference signal are different; and / or, for different path loss reference signals, the path loss estimation bias factors used for the sounding reference signals are the same, or the path loss estimation bias factors used for the sounding reference signals are different; and / or, for different sounding reference signal power control adjustment states, the path loss estimation bias factors used for the sounding reference signal are the same, or the path loss estimation bias factors used for the sounding reference signal are different; And / or, for different sounding reference signal transmission opportunities, the path loss estimation bias factors used for the sounding reference signal are the same, or the path loss estimation bias factors used for the sounding reference signal are different.

6. The device according to claim 1, wherein For a physical uplink shared channel or a physical uplink control channel, a power control adjustment state is associated with the second transmission reception point; The power control adjustment state associated with the second transmission reception point is predefined, or configured through RRC, or indicated through MAC CE and / or DCI.

7. The device according to claim 6, wherein The association between the power control adjustment state and the second transmission reception point is configured via an association between the power control adjustment state and the path loss estimation bias factor; and / or The power control adjustment state of the physical uplink shared channel and / or the power control adjustment state of the physical uplink control channel is associated with the path loss estimation bias factor; for the power control adjustment state of the first transmission reception point, the path loss estimation bias factor is set to zero; With respect to the power control adjustment state of the second transmission reception point, the path loss estimation bias factor is set to non-zero.

8. The device according to claim 6, wherein The path loss estimation bias factor is configured for a TCI state of a physical uplink shared channel and / or a physical uplink control channel, where the TCI state includes: a combined uplink / downlink TCI state, a separate uplink TCI state, or a separate downlink TCI state; Alternatively, the path loss estimation bias factor is configured for a path loss reference signal of a physical uplink shared channel and / or a physical uplink control channel.

9. The device according to claim 1, wherein For a sounding reference signal, a power control adjustment state is associated with the second transmission reception point; The power control adjustment state associated with the second transmission reception point is predefined, or is defined by RRC Configured, or indicated through MAC CE and / or DCI.

10. The device according to claim 9, wherein The power control adjustment state associated with the second transmission reception point includes at least one of the following: The same first closed-loop power control state for SRS as for PUSCH; The same second closed-loop power control state for SRS as for PUSCH; a first closed-loop power control state for SRS that is different from that for PUSCH; A second closed-loop power control state for SRS that is different from that for PUSCH.

11. The device according to claim 9, wherein The association between the power control adjustment state and the second transmission reception point is configured via an association between the power control adjustment state and the path loss estimation bias factor; and / or At least a portion of a power control adjustment state of a sounding reference signal is associated with the path loss estimation bias factor; With respect to the power control adjustment state of the first transmission reception point, the path loss estimation bias factor is set to zero; With respect to the power control adjustment state of the second transmission reception point, the path loss estimation bias factor is set to non-zero.

12. The device according to claim 9, wherein The path loss estimation bias factor is configured for a TCI state of a sounding reference signal, where the TCI state includes: a combined uplink / downlink TCI state, a separate uplink TCI state, or a separate downlink TCI state; Alternatively, the path loss estimation bias factor is configured for a path loss reference signal of a sounding reference signal.

13. The device according to claim 1, wherein The device further comprises: A sending unit is configured to send a sounding reference signal, where the sounding reference signal has a predefined power or a configured power, and the sounding reference signal is used by a network device to calculate the path loss estimation deviation factor.

14. The device according to claim 1, wherein The path loss estimation bias factor is predefined or configured with one or more values, and / or a value for a physical uplink shared channel / physical uplink control channel / sounding reference signal is configured or indicated.

15. The device according to claim 1, wherein Multiple second transmission reception points are configured in the same cell, and multiple path loss estimation deviation factors are configured or indicated; The path loss estimation bias factor is applied to closed-loop power control and / or open-loop power control.

16. The device according to claim 1, wherein The path loss estimation bias factor is used for at least one of the following power headrooms: A first type of PHR based on actual PUSCH transmission; A first type of PHR based on a reference PUSCH transmission; A third type of PHR based on actual SRS transmission; A third type of PHR based on reference SRS transmission.

17. The device according to claim 1, wherein The third type PHR based on actual SRS transmission and / or the third type PHR based on reference SRS transmission is associated with a closed-loop power control state for the SRS; wherein the closed-loop power control state for the SRS is at least one of the following: The same first closed-loop power control state for SRS as for PUSCH; The same second closed-loop power control state for SRS as for PUSCH; a first closed-loop power control state for SRS that is different from that for PUSCH; A second closed-loop power control state for SRS that is different from that for PUSCH; Alternatively, the third type PHR based on the actual SRS transmission and / or the third type PHR based on the reference SRS transmission is associated with a closed-loop power control state for the SRS; wherein the closed-loop power control state for the SRS is at least one of the following: a first closed-loop power control state for SRS that is different from that for PUSCH; A second closed-loop power control state for SRS that is different from that for PUSCH.

18. The apparatus of claim 1, wherein a power control state of an SRS is indicated in a MAC CE for power headroom reporting.

19. A power control device comprising: a sending unit, configured to send configuration information for uplink transmission; The terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

20. A communication system comprising: A network device that sends configuration information for uplink transmission; A terminal device performs a first uplink transmission and a first downlink transmission with a first transmission receiving point, and / or performs a second uplink transmission with a second transmission receiving point; the terminal device calculates the power of the second uplink transmission based on a path loss estimation deviation factor.

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