Downlink power allocation method and apparatus

Abstract

Embodiments of the present application provide a downlink power allocation method and apparatus. The method comprises: determining power offset value information of a target beam, and sending the power offset value information and / or beam indication information of the target beam, such that a terminal device determines an EPRE value of the target beam on the basis of the received power offset value information and / or beam indication information of the target beam. According to the method, the EPRE of the target beam is dynamically adjusted on the basis of the power offset value information. With the EPRE of the target beam being a fixed value, in the method, the total power of a satellite is dynamically shared by means of different beams, improving satellite resource utilization. As a result, the number of beams operating normally at the same time increases, expanding a downlink coverage area and improving the communication performance of a communication system.

Description

A method and device for allocating downlink power

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 15, 2024, with application number 202410061220.9 and invention name “A Downlink Power Allocation Method and Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a downlink power allocation method and device. Background Art

[0003] Since the network coverage of ground network equipment such as base stations in communication systems is limited, in places where base stations cannot be deployed or the cost of deploying base stations is relatively high, such as oceans, deserts and remote areas, base stations can use satellites as relays to communicate with terminal devices, thereby extending the coverage of ground networks such as base stations.

[0004] The 3rd Generation Partnership Project (3GPP) began standardizing non-terrestrial networks (NTN) in Rel-17. NTN technology was enhanced in Rel-18. Base stations can communicate with terminal devices via satellite in either downlink or uplink. The uplink refers to the link through which terminal devices send data to the base station via satellite. The downlink refers to the link through which the base station sends data to the terminal device via satellite.

[0005] Limited by satellite EPRE and feeder line limitations, satellites are currently unable to activate all beams at their nominal equivalent isotropically radiated power (EIRP) at any given time. This limits downlink coverage and impacts communication system performance. Improving downlink coverage and improving communication system performance has become a key industry concern. Summary of the Invention

[0006] Embodiments of the present application provide a downlink power allocation method and apparatus for enhancing downlink coverage and improving the communication performance of a communication system including a satellite.

[0007] In a first aspect, an embodiment of the present application provides a downlink power allocation method, which is applied to a network device and specifically includes: determining power offset value information of a target beam, where the power offset value information of the target beam is the offset value information between the energy EPRE value transmitted per resource unit of the target beam and the EPRE value of the reference signal, and the EPRE value of the target beam represents the EPRE value allocated to the target beam by the network device; and sending the power offset value information and / or beam indication information of the target beam so that the terminal device determines the EPRE value of the target beam based on the received power offset value information and / or beam indication information of the target beam. The method dynamically adjusts the EPRE of the target beam through the power offset value information, relative to the EPRE of the target beam being a fixed value. The method improves the resource utilization of the satellite by dynamically sharing the total transmit power of the satellite with different beams, thereby increasing the number of beams operating normally at the same time, thereby increasing the coverage area of ​​the downlink and improving the communication performance of the communication system.

[0008] In one possible implementation, a network device transmits power offset value information and / or beam indication information of a target beam via first signaling. Optionally, the first signaling is system information block (SIB) signaling or radio resource control (RRC) signaling, where the SIB signaling includes the power offset value information and / or beam indication information of the target beam, and the RRC signaling includes the power offset value information and / or beam indication information of the target beam.

[0009] In another possible implementation, a non-zero power channel state information reference signal NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam is sent to enable the terminal device to determine the NZP-CSI-RS transmit power of the target beam. The NZP-CSI-RS additional power offset value information is an additional offset value of the beam power offset value relative to the reference power offset value, and the reference power offset value is the offset value powerControlOffsetSS of the EPRE of the NZP-CSI-RS relative to the EPRE of the SSB. Thus, this method dynamically adjusts the offset value of the transmit power of the target beam sent by the network device through the NZP-CSI-RS additional power offset value information, which is different from the fixed value of the NZP-CSI-RS transmit power of the target beam. This method can further adjust the EPRE of the target beam.

[0010] In another possible implementation, the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam is sent through a second signaling; the second signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam.

[0011] Optionally, if the second signaling is a downlink control signal DCI signaling, if the DCI signaling is the first DCI signaling, NZP-CSI-RS additional power offset value information and / or beam indication information for N beams are sent via the first DCI signaling; the N beams include the target beam, N is a positive integer, and the first DCI signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information for the N beams. This enables one signaling to transmit the NZP-CSI-RS additional power offset values ​​for multiple beams, thereby improving regulation efficiency.

[0012] Optionally, the beam indication information includes one or more of the following: a beam identifier, a resource identifier of a reference signal corresponding to the beam, beam position indication information, and beam transmission time information.

[0013] In the second aspect, an embodiment of the present application provides a downlink power allocation method, which is applied to a terminal device, and the method includes: receiving power offset value information and / or beam indication information of a target beam sent by a network device; the power offset value information of the target beam is the offset value information between the energy EPRE value sent per resource unit of the target beam and the EPRE value of the reference signal, and the EPRE value of the target beam represents the EPRE value allocated by the network device to the target beam; determining the EPRE value of the target beam according to the power offset value information and / or beam indication information of the target beam.

[0014] In one possible implementation, power offset value information and / or beam indication information of a target beam sent by a network device is received via first signaling. Optionally, the first signaling is SIB signaling or RRC signaling, where the SIB signaling includes the power offset value information and / or beam indication information of the target beam, and the RRC signaling includes the power offset value information and / or beam indication information of the target beam.

[0015] In another possible implementation, the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam sent by the receiving network device is received; the NZP-CSI-RS additional power offset value information is an additional offset value of the beam power offset value relative to the reference power offset value, and the reference power offset value is the offset value powerControlOffsetSS of the EPRE of the NZP-CSI-RS relative to the EPRE of the SSB; based on the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam, the NZP-CSI-RS transmit power of the target beam is determined.

[0016] In another possible implementation, the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam sent by the network device is received through the second signaling; the second signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam.

[0017] Optionally, if the DCI signaling is the first DCI signaling, the NZP-CSI-RS additional power offset value information and / or beam indication information of N beams sent by the network device is received through the first DCI signaling; the N beams include the target beam, N is a positive integer, and the first DCI signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information of the N beams.

[0018] Optionally, the beam indication information includes one or more of the following: a beam identifier, a resource identifier of a reference signal corresponding to the beam, beam position indication information, and beam transmission time information.

[0019] In a third aspect, an embodiment of the present application provides a communication device, the communication device comprising:

[0020] Memory, for storing computer instructions;

[0021] A processor is used to execute the computer program or computer instructions stored in the memory, so that the communication device performs the method as described in any one of the first aspect or the second aspect.

[0022] In a fourth aspect, an embodiment of the present application provides a computer storage medium for storing a computer program, which, when executed, is used to implement the method described in either the first aspect or the second aspect.

[0023] Any of the downlink power allocation methods, communication devices, computer-readable storage media, or computer program products provided above are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0025] FIG2 is an interactive diagram of a downlink power allocation method disclosed in an embodiment of the present application;

[0026] FIG3 is a schematic diagram of the structure of SIB signaling provided in an embodiment of the present application;

[0027] FIG4 is a schematic diagram of a base station sending information to a terminal device according to an embodiment of the present application;

[0028] FIG5 is an interaction diagram of a downlink power allocation method provided in an embodiment of the present application;

[0029] FIG6 is a flow chart of a method for transmitting information using DCI signaling according to an embodiment of the present application;

[0030] FIG7 is an interaction diagram of a method for a base station to send beam power indication information provided by an embodiment of the present application;

[0031] FIG8 is a structural diagram of another communication device disclosed in an embodiment of the present application;

[0032] FIG9 is a structural example diagram of another communication device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0034] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0035] The "multiple" involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first" and "second" are only used for the purpose of distinguishing the description and cannot be understood as indicating or implying relative importance or order.

[0036] The embodiments of the present application are applied to communication systems, which may be second-generation (2G) communication systems, third-generation (3G) communication systems, LTE systems, fifth-generation (5G) communication systems, LTE and 5G hybrid architectures, 5G New Radio (5G NR) systems, and new communication systems that may emerge in future communication developments.

[0037] A communication system includes network equipment and terminal equipment. A network device is a device used to provide network communication functions, sometimes also referred to as a network element. A network device can typically be a base station, a functional unit of a base station, or other ground-based network equipment. In the embodiments of this application, a network device refers to a ground-based network device, such as a combination of a base station and a satellite. A communication system is shown in FIG1 , which includes a network device and a terminal device 3. Specifically, the network device includes a base station 1 and a satellite 2.

[0038] In the embodiments provided in the present application, the base station can be any device with wireless transceiver functions, including but not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in long term evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point (TRP) in new radio (NR), a base station of subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The base station can include one or more co-site or non-co-site transmission points (Transmission Reception Point, TRP). The base station can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station can communicate with a terminal device, or communicate with the terminal device through a relay station. The terminal device can communicate with multiple base stations of different technologies. For example, the terminal device can communicate with a base station that supports the LTE network, and can also communicate with a base station that supports the 5G network. It can also establish dual connections with a base station that supports the LTE network and a base station that supports the 5G network.

[0039] In the embodiments provided herein, the terminal device may be in various forms, such as a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a vehicle-mounted terminal device, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, a wearable terminal device, etc. The terminal device may also be sometimes referred to as a terminal device, user equipment (UE), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE device, etc. The terminal device may also be a fixed terminal device or a mobile terminal device.

[0040] In the embodiments of the present application, the satellite may be of various forms, such as geosynchronous orbit satellites, polar orbit satellites, sun-synchronous orbit satellites, and other communication satellites used to provide services such as telephone, data transmission, and television broadcasting. The satellite may also be a navigation satellite used to provide global positioning and navigation services.

[0041] Terminal device 3 establishes satellite communication with base station 1. Data interaction through satellite communication requires satellite 2 to transmit beams, and satellite 2 needs to activate all beams at the nominal EIRP for a given duration. The nominal EIRP refers to the minimum EIRP required for the base station to send information to the terminal device beam. The nominal EIRP of different beams may be different, and the nominal EIRP of the same beam at different times may also be different. EIRP refers to the energy per resource element (EPRE) transmitted by the satellite in a specific direction, which is the product of the satellite's total EPRE and the antenna gain.

[0042] Currently, the EPRE allocated to satellite 2 for beams is fixed. For example, the fixed EPRE is the synchronization signal block (SS-PBCH-Block) power (also known as power). ss-PBCH-BlockPower refers to the average EPRE value of the resource element (RE) carrying the secondary synchronization signal. The unit is dBm. For convenience, the SS-PBCH-Block will be referred to as SSB below.

[0043] Limited by the satellite's transmit power and transmission bandwidth, a satellite can only serve a portion of its coverage area at any given time. Due to limitations in transmit power and feeder links, a satellite cannot activate all beams at the nominal EIRP at a given time. Activating satellite beams with a fixed EIRP value can cause some beams to fail, impacting the satellite's downlink coverage area and coverage quality.

[0044] In response to the above issues, embodiments of the present application provide a downlink power allocation method that dynamically adjusts the EPRE assigned to a satellite beam during downlink data transmission. This method improves satellite resource utilization by dynamically sharing the satellite's total EPRE across different beams, thereby increasing the number of beams operating simultaneously, broadening the downlink coverage area, and enhancing the communication system's performance.

[0045] FIG2 is an interactive diagram of a downlink power allocation method disclosed in an embodiment of the present application. In the process shown in FIG2 , the network devices include a base station and a satellite as an example for illustration. FIG2 includes the following steps:

[0046] S201: The network device obtains power offset value information of the target beam.

[0047] The power offset value information of the target beam refers to the offset value information between the EPRE of the target beam and the EPRE of the reference signal. In the embodiment of the present application, the power offset value information of the target beam can be the power offset value α between the EPRE of the target beam and the EPRE of the reference signal, or can be indication information indicating the power offset value α of the target beam, such as indicating the offset value level, etc., which is not specifically limited in the present application.

[0048] Among them, the EPRE of the reference signal is the EPRE allocated by the network device to each beam in the cell, that is, the EPRE of the reference signal is ss-PBCH-BlockPower. The EPRE of the target beam refers to the EPRE allocated by the network device to the target beam when the target beam transmits the SSB signal. The EPRE of the target beam can be the SSB transmit power. The SSB transmit power is the EPRE value allocated by the network device to the target beam. Specifically, when sending the SSB signal, the base station determines the EPRE value allocated by the satellite to the target beam. In an embodiment of the present application, the SSB transmit power is dynamically changed, that is, the EPRE value allocated by the satellite to the target beam is also dynamically changed. In this way, the EPRE value allocated by the satellite to the target beam is dynamically adjusted through the base station, thereby ensuring the normal operation of the beam and reducing the amount of resources occupied by the beam, and enabling the satellite to activate more beams within a given time, thereby increasing the number of beams served by the satellite at the same time.

[0049] In an embodiment of the present application, the network device first determines the SSB transmit power and ss-PBCH-BlockPower, and then uses the difference between the SSB transmit power and ss-PBCH-BlockPower as the power offset value α of the target beam, that is, α = SSB transmit power - ss-PBCH-BlockPower. The network device will determine the power offset value information corresponding to the power offset value α of the target beam, and send the power offset value information, or the power offset value information and beam indication information to the terminal device. Among them, α can be positive, negative, or 0, and the embodiment of the present application does not specifically limit the sign of α.

[0050] The terminal device determines the EPRE value of the target beam as the transmit power of the SSB based on the target beam's power offset value α and ss-PBCH-BlockPower, and the EPRE value of the target beam = ss-PBCH-BlockPower + α. In this way, the terminal device can measure and use the EPRE value of the target beam.

[0051] S202: The network device sends the power offset value information of the target beam to the terminal device.

[0052] After the network device obtains the power offset value information of the target beam, it sends the power offset value information of the target beam to the terminal device.

[0053] In an embodiment of the present application, the network device may send the power offset value information of the target beam through the first signaling. Specifically, the network device fills the power offset value information of the target beam into the power offset value information filling field of the first signaling and sends the filled first signaling.

[0054] Exemplarily, the first signaling is system information block (SIB) signaling or radio resource control (RRC) signaling.

[0055] To improve transmission efficiency, the network device also sends beam indication information to the terminal device along with the target beam's power offset information to improve transmission efficiency and enable the terminal device to simultaneously receive power offset information for multiple beams. Based on this beam indication information, the terminal device can match the target beam from the multiple beams and determine the EPRE value for the received target beam.

[0056] The beam indication information is used to send the power offset value information of the target beam to the terminal device, so that the terminal device determines to obtain the target beam from the beam transmitting the SSB signal, and enables the terminal device to obtain the EPRE value assigned by the network device to the target beam. In an embodiment of the present application, the beam indication information includes one or more of the following: a beam identifier, or a resource identifier of a reference signal corresponding to the beam, beam position indication information, and beam transmission time information.

[0057] The beam identifier is a parameter or identifier used to describe the beam propagation direction. Based on the beam identifier, the network device can quickly match the target beam from multiple transmitted beams. Furthermore, if the beam identifier is added to the beam transmitted by the network device, the network device can precisely control the beam's propagation direction and path, thereby reducing interference between beams and increasing data transmission rates. The beam identifier can be the beam's identity, pointing angle, scanning angle, etc., and is not specifically limited in the embodiments of this application.

[0058] The resource identifier of the reference signal (RS) corresponding to a beam is used to uniquely identify the RS corresponding to a beam. Based on the RS resource identifier, a network device can identify the RS and, based on the RS, determine the target beam from multiple transmitted beams. This application does not specifically limit the type of RS resource identifier; for example, it can be a signal name, identifier code, etc.

[0059] The beam position indication information is used to indicate the transmission location of the beam transmission signal. For example, the beam position indication information includes the signal arrival direction, departure direction, signal strength, and multipath information. In embodiments of the present application, the network device can select the target beam based on the beam position indication information. The beam transmission time refers to the time when the satellite transmits the beam.

[0060] In an embodiment of the present application, the network device may send the power offset value and beam indication information of the target beam to the terminal device through a first signaling. Specifically, the first signaling includes a field for filling in the power offset value and a field for filling in the beam indication information. The network device first fills the power offset value information and beam indication information of the target beam into the corresponding fields and sends the filled first signaling to the terminal device.

[0061] In one example, the first signaling may be SIB signaling.

[0062] FIG3 is a schematic diagram of the structure of SIB signaling provided in an embodiment of the present application.

[0063] (a) in FIG3 shows that the SIB signaling includes multiple fields, such as a transmission power offset value field, a beam identification field, a beam position indication information field, and a beam transmission time field.

[0064] The network device fills the power offset value α of the target beam obtained into the transmission power offset value field, fills the beam identifier into the beam identifier field, fills the beam position indication information into the beam position indication information field, and fills the beam transmission time into the beam transmission time field, thereby obtaining the SIB signaling shown in (b) of Figure 3. The addition method can be that the base station fills in the corresponding field based on a preset mechanism, which is not specifically limited in the embodiments of the present application.

[0065] The network device sends the filled SIB signaling to the terminal device.

[0066] In another example, the network device can send the power offset value information of the beam to the terminal via radio resource control (RRC) signaling. Specifically, the RRC signaling includes a power offset value field, a beam identifier field, a beam position indication information field, and a beam transmission time field. The network device fills the acquired target beam power offset value α information, beam identifier, beam position indication information, and beam transmission time into the corresponding fields and sends the added RRC signaling to the terminal device.

[0067] The embodiment of the present application can also send power offset value information through other signaling methods, which is not specifically limited in this application.

[0068] Alternatively, the network device may send power offset information for one beam at a time. If multiple beams need to be adjusted, the network device may send the power offset information for each beam multiple times, for example, sequentially sending the power offset information for the first beam, the power offset information for the second beam, and the power offset information for the third beam.

[0069] Furthermore, the network device can simultaneously transmit the power offset value information of multiple beams, and the terminal device corresponding to each beam can obtain the EPRE value assigned by the network device for that beam. In this way, the network device server can simultaneously transmit multiple beams, increasing the coverage area of ​​the network device.

[0070] In one example, one beam corresponds to one signaling, and the network device simultaneously sends signaling corresponding to multiple beams to the terminal device.

[0071] Figure 4 is a schematic diagram of a network device sending information to a terminal device according to an embodiment of the present application. Specifically, the network device simultaneously sends signaling corresponding to multiple beams to terminal devices corresponding to different beams. Figure 4 uses the example of sending four signaling corresponding to four beams to illustrate.

[0072] Network device 1 simultaneously sends four first signalings to terminal device 2, namely signaling 1, signaling 2, signaling 3, and signaling 4. In this embodiment of the present application, signaling 1, signaling 2, signaling 3, and signaling 4 are used to represent different signalings. Among them, signaling 1 is the signaling corresponding to the first beam, signaling 2 is the signaling corresponding to the second beam, signaling 3 is the signaling corresponding to the third beam, and signaling 4 is the signaling corresponding to the fourth beam.

[0073] To ensure the reliability of signaling transmission, the base station needs to perform anti-interference processing on the simultaneously transmitted signaling 1, signaling 2, signaling 3, and signaling 4. The embodiments of the present application do not specifically limit the anti-interference processing method. For example, the anti-interference processing method can be to control the power of signaling 1, signaling 2, signaling 3, and signaling 4, or to stagger the frequencies used by different signaling signals through frequency planning to avoid spectrum overlap.

[0074] In another example, power offset value information corresponding to multiple beams can be added to the same signaling, and the signaling can be sent to the terminal device. For example, the beams include beam 1, beam 2, and beam 3. The power offset value information corresponding to beam 1 is added to the xth field of the signaling, the power offset value information corresponding to beam 2 is added to the yth field of the signaling, and the power offset value information corresponding to beam 3 is added to the zth field of the signaling. The filled signaling is sent to the satellite. The xth field, the yth field, and the zth field represent different fields. Beam 1, Beam 2, and Beam 3 are used to represent different beams.

[0075] The embodiment of the present application can also implement the simultaneous transmission of power offset value information corresponding to multiple beams through other methods, which are not specifically limited in the embodiment of the present application.

[0076] S203: The terminal device determines the EPRE of the target beam according to the power offset value information of the target beam.

[0077] In one example, after receiving the power offset value information of the target beam transmitted by the satellite, the terminal device determines the EPRE value of the target beam based on the power offset value information of the target beam. In this way, the terminal device can measure and receive the determined EPRE value of the target beam. For example, if the power offset value corresponding to the power offset value information of the target beam received by the terminal device is α, the EPRE value of the reference signal of the target beam is adjusted using α, resulting in an EPRE value of the target beam = ss - PBCH - BlockPower + α.

[0078] In another example, considering that the terminal device can accurately match the target beam from multiple beams, the base station can also send beam indication information in addition to the power offset value information of the target beam. The terminal device instructs the acquisition of the EPRE value of the target beam based on the beam indication information. For example, the beams transmitted by the network device include beam 1, beam 2, and beam 3. The specific beam information is shown in Table 1.

[0079] Table 1 Beam information

[0080] In Table 1, A1, A2, and A3 represent the arrival directions of different signals, B1, B2, and B3 represent the departure directions of different signals, and Q1, Q2, and Q3 represent the signal strengths of different signals. T1 is the beam transmission time, and P is the EPRE of the reference signal assigned by the network device to beam 1. If the target beam indication information received by the network device is the same as beam 1, beam 1 is designated as the target beam, and the EPRE of beam 1 is determined to be P + α1.

[0081] In one example, after receiving the power offset value information and beam indication information of the target beam through first signaling, the terminal device parses the first signaling to obtain the power offset value information and beam indication information of the target beam. The terminal device obtains the target beam based on the beam indication information and determines the EPRE value of the target beam based on the power offset value of the target beam.

[0082] In another example, when the terminal device receives multiple signalings at the same time, or receives one signaling but one signaling includes power offset value information of multiple beams, the satellite parses the signaling at the same time, obtains the power offset value information of multiple beams, and then obtains the corresponding beam according to the beam indication information in each power offset value information, and adjusts the EPRE corresponding to the beam.

[0083] As shown in Table 1, after parsing the signaling, the terminal device obtains power offset information for multiple beams, specifically the power offset information corresponding to beam 1, beam 2, and beam 3. The satellite matches each beam based on the beam indication information in the power offset information and adjusts the EPRE allocated by the satellite to that beam using the power offset value corresponding to the power offset information for that beam. For example, if the power offset for beam 1 is α1, the power offset for beam 2 is α2, and the power offset for beam 3 is α3, then the EPRE for beam 1 is P + α1, the EPRE for beam 2 is P + α2, and the EPRE for beam 3 is P + α3.

[0084] For example, if the network equipment allocates 10 beams to a cell, and the total EPRE of the satellite transmission is 400 dBm, before the adjustment, the network equipment allocates an EPRE of 40 dBm to each beam. The nominal EIPR of beams 1-5 is 50 dBm, and the nominal EIRP of beams 6-10 is 30 dBm. Before the adjustment, the network equipment can only activate beams 6-10. After the adjustment, 50 dBm is allocated to beams 1-5, and 30 dBm is allocated to beams 6-10. As a result, beams 1-10 can communicate normally.

[0085] Therefore, in downlink data transmission, the embodiment of the present application dynamically adjusts the EPRE allocated by the satellite to each beam using beam power indication information. This improves satellite resource utilization by allowing different beams to share the satellite's total EPRE, thereby increasing the number of beams operating normally at the same time and enhancing the communication performance of the communication system.

[0086] In addition, an embodiment of the present application provides a non-zero power channel state information reference signal (NZP-CSI-RS) additional power offset value, which is used to determine the beam power offset value allocated by the network device to the target beam.

[0087] FIG5 is an interactive diagram of a downlink power allocation method provided in an embodiment of the present application. The method further performs the following operations based on the implementation of FIG2:

[0088] S401: The network device obtains NZP-CSI-RS attachment power offset value information of the target beam.

[0089] The NZP-CSI-RS additional power offset value information refers to the additional offset value information of the beam power offset value relative to the reference power offset value. Specifically, the NZP-CSI-RS additional power offset value information can be the additional offset value of the beam power offset value relative to the reference power offset value, or it can be the indication information corresponding to the additional offset value of the beam power offset value relative to the reference power offset value, which is not specifically limited in the embodiments of the present application.

[0090] The beam power offset value refers to the power offset value that the base station instructs the satellite to allocate for the target beam. The beam power offset value sent by the base station is a known quantity. The reference power offset value is the power offset value of the NZP-CSI-RS EPRE relative to the SSB EPRE. Specifically, the reference power offset value is powerControlOffsetSS. In one example, the NZP-CSI-RS additional power offset value is β, where β = beam power offset value - powerControlOffsetSS.

[0091] The ERPE of the NZP-CSI-RS is a reference signal sent by the network device for measuring channel state information. The ERPE of the NZP-CSI-RS is a known quantity. The ERPE of the SSB refers to the ERPE of the SSB sent by the network device, which is used to enable normal communication between the network device and other terminal devices. The ERPE of the SSB is known. Therefore, the network device can directly obtain the power offset value of the NZP-CSI-RS relative to the SSB. For example, if the EPRE of the NZP-CSI-RS is PCSI-RS and the EPRE of the SSB is PSS, then powerControlOffsetSS = PCSI-RS - PSS.

[0092] Thus, the network device allocates an NZP-CSI-RS additional power offset value to the target beam, and the terminal device can determine the current power offset value of the target beam based on the NZP-CSI-RS additional power offset value allocated to the target beam. Specifically, the terminal device first allocates a fixed power offset value of powerControlOffsetSS to the target beam, adjusts powerControlOffsetSS by using the NZP-CSI-RS additional power offset value, and determines that the power offset value of the target beam is powerControlOffsetSS+NZP-CSI-RS additional power offset value. Thus, by dynamically adjusting the power offset value of the target beam, the transmission power allocated by the satellite to the beam is minimized, thereby improving the communication quality.

[0093] S402: The network device sends NZP-CSI-RS attachment power offset value information and / or beam indication information of the target beam.

[0094] In one example, the network device may send the NZP-CSI-RS attachment power offset value information of the target beam to the terminal device. Specifically, the network device may send the NZP-CSI-RS attachment power offset value information of the target beam to the terminal device through the second signaling.

[0095] Among them, the second signaling carries the NZP-CSI-RS attachment power offset value information filling field, the base station fills the obtained NZP-CSI-RS attachment power offset value information into the corresponding field, and sends the filled second signaling to the terminal.

[0096] Optionally, the second signaling may be RRC signaling, medium access control element (MAC-CE) signaling, or downlink control information (DCI) signaling. The embodiment of the present application does not specifically limit the form of the second signaling.

[0097] In another example, the network device may send the NZP-CSI-RS attachment power offset value information and beam indication information of the target beam to the terminal device. Specifically, the network device may send the NZP-CSI-RS attachment power offset value information and beam indication information of the target beam to the terminal device through the second signaling.

[0098] Example 1: The base station can send NZP-CSI-RS additional power offset value information and beam indication information via RRC signaling. The RRC signaling includes an NZP-CSI-RS additional power offset value field, a beam identifier field, a beam position indication information field, and a beam transmission time field. The base station adds the obtained NZP-CSI-RS additional power offset value to the additional power offset value field, fills the corresponding fields with the beam identifier, beam position indication information, and beam transmission time, and sends the added RRC signaling to the satellite.

[0099] Example 2: The network device can send NZP-CSI-RS additional power offset value information and beam indication information to the satellite through MAC-CE signaling. Specifically, the MAC-CE signaling includes an NZP-CSI-RS additional power offset value field, a beam identifier field, a beam position indication information field, and a beam transmission time field. The network device adds the obtained NZP-CSI-RS additional power offset value to the additional power offset value field, fills the beam identifier, the beam position indication information, and the beam transmission time into the corresponding fields, and sends the filled MAC-CE signaling to the satellite.

[0100] Example 3: The base station may transmit NZP-CSI-RS additional power offset value information and beam indication information to the terminal device via satellite through DCI signaling. In this embodiment of the present application, the DCI signaling includes first DCI signaling and second DCI signaling. The first DCI signaling is also called group DCI signaling and includes NZP-CSI-RS additional power offset value information carried by one or more beams.

[0101] If the first DCI signaling carries an NZP-CSI-RS attachment power offset value information and beam indication information, the NZP-CSI-RS attachment power offset value and beam indication information of the beam can be directly filled into the corresponding fields, and the filled DCI signaling can be sent to the satellite.

[0102] If the first DCI carries the NZP-CSI-RS accessory power offset value information and beam indication information of multiple beams, the NZP-CSI-RS accessory power offset value and beam indication information of the multiple beams can be combined according to a preset method, and the combined information can be filled into the corresponding field of the DCI signaling, and the filled DCI signaling can be sent to the satellite.

[0103] The preset method can be to arrange the NZP-CSI-RS attachment power offset value and beam indication information according to the preset rules of the beam identification value, such as arranging them in order from small to large, and combining the information of multiple beams into {NZP-CSI-RS attachment power offset value 1, NZP-CSI-RS attachment power offset value 2, ...}, and filling {NZP-CSI-RS attachment power offset value 1, NZP-CSI-RS attachment power offset value 2, ...} into the corresponding field of the DCI signaling, and sending the filled DCI signaling to the satellite.

[0104] The preset method can also be {beam indication information 1, NZP-CSI-RS attachment power offset value 1, beam indication information 2, NZP-CSI-RS attachment power offset value 2, ...}, the odd bit is the beam indication information, and the odd + 1 bit is the NZP-CSI-RS attachment power offset value corresponding to the beam indication information.

[0105] The embodiments of the present application do not specifically limit the preset method.

[0106] The second DCI signaling is a terminal equipment specific (UE specific) DCI signaling, which is used to indicate the NZP-CSI-RS attachment power offset value and beam indication information carried by the current beam.

[0107] In the embodiment of the present application, different DCIs use different Radio Network Temporary Identifiers (RNTIs). RNTI is a 32-bit binary number, and different RNTIs can use different 32-bit binary numbers. For example, group DCI uses group RNTI, and UE-specific DCI uses UE-specific RNTI.

[0108] The following describes a method for transmitting information based on DCI signaling in conjunction with FIG6 . FIG6 is a flow chart of a method for transmitting information using DCI signaling provided by an embodiment of the present application. The execution subject is a network device, and the method shown in FIG6 includes:

[0109] S4021: The network device obtains RNTI.

[0110] S4022: Determine whether the RNTI is a group RNTI. If so, execute S4023; otherwise, execute S4024.

[0111] S4023: Use group DCI signaling to send the NZP-CSI-RS additional power offset value information of multiple beams and / or the beam indication information to the terminal device.

[0112] S4024: Use UE specific DCI to send the NZP-CSI-RS additional power offset value information of the current beam and / or the beam indication information to the terminal device.

[0113] In addition, the embodiment of the present application may also send the NZP-CSI-RS additional power offset value information to the terminal device through other signaling. This embodiment of the present application is not specifically limited.

[0114] S403: The terminal device determines the NZP-CSI-RS transmit power of the target beam based on the NZP-CSI-RS additional power offset value information.

[0115] After receiving the NZP-CSI-RS additional power offset information, the terminal device determines the NZP-CSI-RS transmit power of the target beam based on the NZP-CSI-RS additional power offset information. The NZP-CSI-RS transmit power of the target beam is used to ensure that the SSB signal can be correctly received and processed by the terminal device.

[0116] In one possible implementation, after receiving the NZP-CSI-RS additional power offset information, the terminal device obtains the NZP-CSI-RS additional power offset value β corresponding to the NZP-CSI-RS additional power offset information and calculates the NZP-CSI-RS transmit power of the target beam by adding β to powerControlOffsetSS. In this case, the communication performance of the communication system is improved by dynamically adjusting the NZP-CSI-RS transmit power of the target beam.

[0117] In another possible implementation method, after the terminal device receives the NZP-CSI-RS additional power offset value information and beam indication information, it first determines the target beam, and then uses the NZP-CSI-RS additional power offset value β corresponding to the NZP-CSI-RS additional power offset value information to adjust the NZP-CSI-RS transmission power of the target beam.

[0118] In one example, after receiving the NZP-CSI-RS additional power offset value information according to the second signaling, the satellite parses the second signaling and reads the NZP-CSI-RS additional power offset value information from the field in the second signaling that populates the NZP-CSI-RS additional power offset value and beam indication information. The satellite then obtains the target beam based on the beam indication information of the target beam in the NZP-CSI-RS additional power offset value information, and adjusts the power offset value allocated by the satellite to the target beam based on the NZP-CSI-RS additional power offset value.

[0119] For example, if the signaling is RRC signaling or MAC-CE signaling, the signaling is parsed and the target beam corresponding to the signaling is matched from beams 1, 2, 3, and 4 transmitted by the satellite, assuming it is beam 1. The satellite then uses the corresponding NZP-CSI-RS additional power offset value β in the signaling to adjust the power offset value powerControlOffsetSS allocated by the satellite to the beam. The specific adjustment method can be β + powerControlOffsetSS.

[0120] Exemplarily, if the signaling is DCI signaling, first determine whether the DCI signaling carries group RNTI. If it carries group RNTI, it means that the DCI signaling is the first DCI signaling. The DCI signaling is parsed to obtain multiple NZP-CSI-RS additional power offset value information based on a preset combination. For example, according to the preset rule of the beam identification value, such as arranging in order from small to large, the NZP-CSI-RS additional power offset value information of multiple beams is combined to obtain {NZP-CSI-RS additional power offset value information 1, NZP-CSI-RS additional power offset value information 2, ...}, or {beam indication information 1, NZP-CSI-RS additional power offset value information 1, beam indication information 2, NZP-CSI-RS additional power offset value information 2, ...}, the odd bit is the beam indication information, and the odd+1 bit is the NZP-CSI-RS additional power offset value information corresponding to the beam indication information.

[0121] If multiple NZP-CSI-RS additional power offset value information is information obtained by combining according to the preset rules of the beam identification value, the information is sent to the terminal device, and the terminal device adjusts the power offset value of the corresponding beam according to the NZP-CSI-RS additional power offset value information of each beam. If multiple NZP-CSI-RS additional power offset value information is combined in a manner where the odd bit is the beam indication information and the odd + 1 bit is the NZP-CSI-RS additional power offset value information corresponding to the beam indication information, first obtain the corresponding beam according to the beam indication information, then obtain the NZP-CSI-RS additional power offset value information of the corresponding beam, and finally use the NZP-CSI-RS additional power offset value in the NZP-CSI-RS additional power offset value information to adjust the power offset value of the corresponding beam.

[0122] If the DCI signaling is the second DCI signaling, the DCI signaling is directly parsed, and the NZP-CSI-RS transmit power of the target beam is determined based on the NZP-CSI-RS additional power offset value information obtained after parsing.

[0123] Furthermore, the terminal device measures the reference signal received power (RSRP), reference signal received quality (RSRQ), and path loss according to the NZP-CSI-RS.

[0124] The embodiments of the present application also provide multiple implementation methods for sending the power offset value information of the target beam and the NZP-CSI-RS additional power offset value information.

[0125] In one example, FIG7 is an interaction diagram of a method for a base station to transmit beam power indication information provided by an embodiment of the present application. In this method, a network device simultaneously transmits power offset value information and NZP-CSI-RS additional power offset value information to a terminal device via the same signaling. The method includes:

[0126] S601: The network device obtains the power offset value information of the target beam and the NZP-CSI-RS additional power offset value information.

[0127] S602: The network device fills the beam indication information, power offset value information and NZP-CSI-RS additional power offset value information of the target beam into the same signaling.

[0128] Exemplarily, the base station fills the beam indication information of the target beam into the corresponding field of the signaling, fills the power offset value information into the first power offset value information field of the signaling, fills the additional power offset value information into the NZP-CSI-RS additional power offset value information field of the signaling, and sends the filled signaling to the satellite.

[0129] This application does not specifically limit the signaling, for example, it can be RRC signaling.

[0130] S603: The network device sends the filled signaling to the terminal device.

[0131] S604: The terminal device parses the filled signaling and determines the EPRE and NZP-CSI-RS transmission power of the target beam allocation.

[0132] Specifically, after parsing the signaling, the terminal device obtains the beam indication information, as well as the power offset value information and NZP-CSI-RS additional power offset value information corresponding to the beam indication information. The terminal device uses the power offset value information and the NZP-CSI-RS additional power offset value information to determine the EPRE allocated by the satellite to the target beam and the NZP-CSI-RS transmit power.

[0133] That is, the EPRE of the target beam is ss-PBCH-BlockPower+α, and the NZP-CSI-RS transmit power of the target beam is powerControlOffsetSS+NZP-CSI-RS additional power offset value.

[0134] In another example, the method includes sending the power offset value information and the accessory power offset value information via different signaling. For example, the power offset value information is sent via RRC signaling, and the accessory power offset value information is sent via DCI signaling. In another example, the power offset value information is sent via SIB signaling, and the accessory power offset value information is sent via RRC signaling. This is not specifically limited in the embodiments of the present application.

[0135] Figure 8 shows an example of the composition of a communication device provided in an embodiment of the present application. The communication device can be a terminal device, including but not limited to a mobile phone, a smart wearable device (such as a smart watch), and other electronic devices. Taking a mobile phone as an example, the communication device may include a processor 310, an external memory interface 320, an internal memory 321, a display 330, a camera 340, an antenna 1, an antenna 2, a mobile communication module 350, and a wireless communication module 360.

[0136] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the communication device. In other embodiments, the communication device may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0137] The processor 310 may include one or more processing units. For example, the processor 310 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). The different processing units may be independent devices or integrated into one or more processors.

[0138] It is understood that the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration and does not constitute a structural limitation of the electronic device. In other embodiments of the present application, the electronic device may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0139] External memory interface 320 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with processor 310 via external memory interface 320 to implement data storage functions. For example, files such as music and videos can be stored on the external memory card.

[0140] The internal memory 321 can be used to store computer executable program code, and the executable program code includes instructions. The processor 310 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 321. The internal memory 321 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area can store data created during the use of the electronic device (such as audio data, a phone book, etc.), etc. In addition, the internal memory 321 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 310 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 321, and / or the instructions stored in the memory provided in the processor.

[0141] The wireless communication function of the electronic device can be implemented through antenna 1, antenna 2, mobile communication module 350, wireless communication module 360, modem processor and baseband processor.

[0142] Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in an electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In other embodiments, the antennas can be used in conjunction with a tuning switch.

[0143] The mobile communication module 350 can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied to electronic devices. The mobile communication module 350 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 350 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 350 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 350 can be set in the processor 310. In some embodiments, at least some of the functional modules of the mobile communication module 350 can be set in the same device as at least some of the modules of the processor 310.

[0144] In some embodiments, the electronic device initiates or receives a call request via the mobile communication module 350 and the antenna 1 .

[0145] In addition, an operating system runs on the above components, such as the iOS operating system, the Android operating system, and the Windows operating system. Application programs can be installed and run on the operating system.

[0146] Figure 9 is an example of the composition of another communication device provided in an embodiment of the present application. The communication device can be a network device, such as a base station. Figure 9 shows a simplified schematic diagram of the base station structure. The base station includes parts 910, 920, and 930. Part 910 is mainly used for baseband processing, controlling the base station, etc.; Part 910 is usually the control center of the base station, which can usually be called a processor, which is used to control the base station to perform the processing operations on the network device side in the above method embodiment. Part 920 is mainly used to store computer program code and data. Part 930 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals; Part 930 can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of part 930 can also be called a transceiver or a transceiver, etc., which includes an antenna 933 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Alternatively, the device for implementing the receiving function in section 930 may be considered a receiver, and the device for implementing the transmitting function may be considered a transmitter, that is, section 930 includes a receiver 932 and a transmitter 931. The receiver may also be referred to as a receiving module, a receiver, or a receiving circuit, and the transmitter may be referred to as a transmitting module, a transmitter, or a transmitting circuit.

[0147] Sections 910 and 920 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If multiple boards are present, the boards may be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may simultaneously share one or more processors.

[0148] For example, in one implementation, the transceiver module in section 930 is used to execute the transceiver-related processes executed by the base station in the embodiment shown in Figure 4. The processor in section 910 is used to execute the processing-related processes executed by the base station in the embodiment shown in Figure 4.

[0149] It should be understood that FIG9 is merely an example and not a limitation, and the network device including the processor, memory, and transceiver may not rely on the structure shown in FIG9 .

[0150] Those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the explanation and beneficial effects of the relevant contents in any of the communication devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0151] In this application, a terminal device or network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes, such as the Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0152] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and modules described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0153] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0154] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected to achieve the purpose of the present embodiment according to actual needs.

[0155] In addition, the functional modules in the various embodiments of the present application may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into a single module. The above-mentioned integrated modules may be implemented in the form of hardware or software functional modules.

[0156] If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of the present application or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the process of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

[0157] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A downlink power allocation method, characterized in that, Applied to a network device, the method includes: Determine power offset value information of a target beam, where the power offset value information of the target beam is the offset value information between the energy per resource element (EPRE) value of the target beam and the EPRE value of a reference signal, and the EPRE value of the target beam represents the EPRE value allocated by the network device for the target beam; Transmit the power offset value information and / or beam indication information of the target beam, so that the terminal device determines the EPRE value of the target beam according to the received power offset value information and / or beam indication information of the target beam.

2. The method according to claim 1, wherein Transmit the power offset value information and / or beam indication information of the target beam through a first signaling.

3. The method according to claim 2, characterized in that, The first signaling is a system information block (SIB) signaling or a radio resource control (RRC) signaling. The SIB signaling includes the power offset value information and / or beam indication information of the target beam, and the RRC signaling includes the power offset value information and / or beam indication information of the target beam.

4. The method according to any one of claims 1 to 3, characterized in that The method further includes: Transmit the non-zero power channel state information reference signal (NZP-CSI-RS) additional power offset value information and / or the beam indication information of the target beam, so that the terminal device determines the transmission power of the NZP-CSI-RS of the target beam; The NZP-CSI-RS additional power offset value information is the additional offset value information of the beam power offset value relative to a reference power offset value, and the reference power offset value is the offset value powerControlOffsetSS of the EPRE of the NZP-CSI-RS relative to the EPRE of the synchronization signal block (SSB).

5. The method according to claim 4, wherein The transmitting the non-zero power channel state information reference signal (NZP-CSI-RS) additional power offset value information and / or the beam indication information of the target beam includes: Transmit the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam through a second signaling; the second signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam.

6. The method according to claim 5, characterized in that When the second signaling is a downlink control signal (DCI) signaling, the method further includes: When the DCI signaling is a first DCI signaling, transmit the NZP-CSI-RS additional power offset value information and / or beam indication information of N beams through the first DCI signaling; the N beams include the target beam, N is a positive integer, and the first DCI signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information of the N beams.

7. According to the method according to any one of claims 1-6, characterized in that, The beam indication information includes one or more of the following: beam identifier, resource identifier of the reference signal corresponding to the beam, beam position indication information, and beam transmission time information.

8. A downlink power allocation method, characterized in that Applied to a terminal device, the method includes: Receive the power offset value information and / or beam indication information of the target beam sent by the network device; the power offset value information of the target beam is the offset value information between the energy per resource element (EPRE) value of the target beam and the EPRE value of the reference signal, and the EPRE value of the target beam represents the EPRE value allocated by the network device for the target beam. Determine the EPRE value of the target beam according to the power offset value information and / or beam indication information of the target beam.

9. The method according to claim 8, wherein Receive the power offset value information and / or beam indication information of the target beam sent by the network device through the first signaling.

10. The method according to claim 9, wherein The first signaling is the System Information Block (SIB) signaling or Radio Resource Control (RRC) signaling. The SIB signaling includes the power offset value information and / or beam indication information of the target beam, and the RRC signaling includes the power offset value information and / or beam indication information of the target beam.

11. According to the method according to any one of claims 8-10, characterized in that, The method further includes: Receive the non-zero power (NZP)-CSI reference signal (RS) additional power offset value information and / or the beam indication information of the target beam sent by the network device; the NZP-CSI-RS additional power offset value information is the additional offset value of the beam power offset value relative to the reference power offset value, and the reference power offset value is the offset value powerControlOffsetSS of the EPRE of NZP-CSI-RS relative to the EPRE of the Synchronization Signal Block (SSB). Determine the transmission power of the NZP-CSI-RS of the target beam according to the NZP-CSI-RS additional power offset value information and / or the beam indication information of the target beam.

12. The method according to claim 11, wherein The receiving the NZP-CSI-RS additional power offset value information and / or the beam indication information of the target beam sent by the network device includes: Receive the NZP-CSI-RS additional power offset value information and / or the beam indication information of the target beam sent by the network device through the second signaling; the second signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information of the target beam.

13. The method according to claim 12, wherein When the second signaling is the Downlink Control Information (DCI) signaling, the method further includes: When the DCI signaling is the first DCI signaling, receive the NZP-CSI-RS additional power offset value information and / or the beam indication information of N beams sent by the network device through the first DCI signaling; the N beams include the target beam, N is a positive integer, and the first DCI signaling includes the NZP-CSI-RS additional power offset value information and / or beam indication information of the N beams.

14. The method according to any one of claims 8-13, characterized in that, The beam indication information includes one or more of the following: beam identifier, resource identifier of the reference signal corresponding to the beam, beam position indication information, and beam transmission time information.

15. A communication device, characterized in that, The communication device includes: A memory for storing computer instructions; A processor for executing the computer program or computer instructions stored in the memory, so that the communication device executes the method according to any one of claims 1 to 14.

16. A computer storage medium for storing a computer program, which when executed is used to implement the communication method according to any one of claims 1 to 14.

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