A power headroom reporting method and apparatus

Abstract

A power headroom reporting method and device, the method comprising: a terminal determining a power headroom according to a maximum transmission power of the terminal and a sum of expected transmission powers corresponding to at least two antenna panels or transmission beams in the terminal respectively; and the terminal sending indication information of the power headroom to a network device. By using the method and device, in a scenario where the terminal uses multiple antenna panels for uplink transmission, each antenna panel corresponds to a transmission beam, and the terminal can report a more accurate power headroom, which is convenient for subsequent uplink transmission scheduling and power control of the base station, and improves the performance of multiple antenna panel uplink transmission.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method and apparatus for reporting power margin. Background Technology

[0002] In wireless communication systems, a single base station or multiple base stations can be used for transmission with a terminal. Transmission using a single base station is called monostation transmission, and transmission using multiple base stations is called multistation transmission. Conversely, a terminal can also use one or more antenna panels for transmission with a base station. Transmission using a single antenna panel is called monopanel transmission, and transmission using multiple antenna panels is called multipanel transmission. When a terminal uses multipanel transmission, the signal propagation paths experienced by the uplink transmissions corresponding to the multiple antenna panels may be different, resulting in different path losses and therefore different uplink transmission powers for each antenna panel. The transmit power of the uplink transmission corresponding to each antenna panel needs to be adjusted based on the power margin reported by the terminal. In multi-antenna panel uplink transmission, each antenna panel corresponds to a transmit beam; how the terminal reports the power margin to the base station is a problem worthy of study. Summary of the Invention

[0003] This application provides a power margin reporting method and apparatus to enable the terminal to report power margin to the base station in uplink transmission of multi-antenna panels, where each antenna panel corresponds to a transmission beam.

[0004] In a first aspect, a power margin reporting method is provided. The method is executed by a terminal, a component (processor, chip, circuit, or other, etc.) configured in the terminal, or a software module. The method includes: sending first indication information to a network device, the first indication information indicating a power margin; wherein the power margin is determined based on the terminal's maximum transmit power and the expected transmit power corresponding to at least two antenna panels or transmit beams in the terminal. It should be noted that in the design of the first aspect, each antenna panel or transmit beam corresponds to an expected transmit power. In this design, the aforementioned power margin is determined based on the sum of the terminal's maximum transmit power and the expected transmit power of multiple antenna panels in the terminal.

[0005] Using the above method, the terminal determines a power margin based on its maximum transmit power and the expected transmit power of its multiple antenna panels. For example, the power margin is equal to the difference between the terminal's maximum transmit power and the sum of the expected transmit powers of its multiple antenna panels. In multi-antenna panel uplink transmission mode, the terminal reports a more accurate power margin to the base station, allowing the base station to optimize subsequent uplink transmission scheduling and power control based on the reported power margin, thereby improving the performance of uplink transmission using multiple antenna panels.

[0006] In one design, the power margin indicated by the first indication information is equal to the difference between the terminal's maximum transmit power and the sum of the expected transmit powers corresponding to at least two antenna panels or transmit beams in the terminal. For example, the sum of the expected transmit powers corresponding to at least two antenna panels or transmit beams in the terminal is determined; the difference between the terminal's maximum transmit power and the sum of the expected transmit powers corresponding to the at least two antenna panels or transmit beams is determined, and the difference is equal to the power margin reported by the terminal.

[0007] In one design, the power margin is the actual power margin, the maximum transmit power of the terminal refers to the maximum transmit power used by the terminal in one uplink transmission, and the expected transmit power corresponding to each antenna panel or transmit beam refers to the transmit power corresponding to each antenna panel or transmit beam determined by the terminal according to the power control parameters and uplink transmission scheduling parameters indicated by the network device.

[0008] In the above design, the power margin reported by the terminal to the base station is divided into actual power margin and virtual power margin. The actual power margin is calculated by the terminal based on the power used in a single uplink transmission. The terminal can report the power margin to the base station periodically or based on conditional triggering. When the terminal needs to report the power margin again, since it has not recently performed an uplink transmission, it can only calculate an approximate reference value for the base station to refer to; this reference value is called the virtual power margin. Using the above method, in the actual power margin reporting, the terminal determines the expected transmit power of each antenna panel based on the power control parameters and uplink scheduling parameters indicated by the base station. The actual power margin is determined by the sum of the terminal's maximum transmit power and the expected transmit power of multiple antenna panels. For example, the value of the actual power margin is equal to the difference between the terminal's maximum transmit power and the sum of the expected transmit power of multiple antenna panels. Using the above method, the terminal can accurately report the actual power margin to the base station.

[0009] In one design, the power margin is a virtual power margin, the maximum transmit power of the terminal refers to the maximum transmit power used to determine the virtual power margin, and the expected transmit power corresponding to each antenna panel or transmit beam refers to the transmit power corresponding to each antenna panel or transmit beam determined by the terminal according to the power control parameters indicated by the network device.

[0010] Using the above method, since the terminal has not performed any uplink transmissions before reporting the virtual power margin, and therefore has no corresponding uplink scheduling parameters, the terminal determines the expected transmit power of each antenna panel solely based on the power control parameters indicated by the base station. The terminal then determines the virtual power margin by comparing the maximum transmit power corresponding to the virtual power margin with the expected transmit powers of multiple antenna panels. For example, the virtual power margin is equal to the difference between the terminal's corresponding virtual maximum transmit power and the sum of the expected transmit powers of multiple antenna panels. This method allows the terminal to report the virtual power margin to the base station more accurately.

[0011] In one design, the method further includes sending a second indication message to the network device, the second indication message indicating at least one of the following: the relationship between the expected transmit power corresponding to different antenna panels or transmit beams, the relationship between the path loss measurements corresponding to different antenna panels or transmit beams, or the power margin corresponding to each antenna panel or transmit beam.

[0012] Using the above method, in addition to reporting power margin to the base station, the terminal also reports more relevant detailed information, including the relationship between the expected transmit power of different antenna panels, the relationship between the path loss measurements of different antenna panels, or the power margin corresponding to different antenna panels. By reporting this more detailed information, the base station can better optimize subsequent uplink transmission and improve the performance of uplink transmission with multiple antenna panels.

[0013] In one design, the relationship between the expected transmit power corresponding to the different antenna panels or transmit beams includes: the difference, proportional relationship, or magnitude relationship between the expected transmit power corresponding to the different antenna panels or transmit beams.

[0014] In one design, the relationship between the path loss measurement values ​​corresponding to different antenna panels or transmission beams includes: the difference, proportional relationship, or magnitude relationship of the path loss measurement values ​​corresponding to different antenna panels or transmission beams.

[0015] In one design, the power margin corresponding to each antenna panel or transmit beam is determined based on the terminal's maximum transmit power and the expected transmit power corresponding to each antenna panel or transmit beam. For example, the power margin corresponding to an antenna panel or transmit beam is equal to the difference between the terminal's maximum transmit power and the expected transmit power corresponding to that antenna panel or transmit beam.

[0016] Secondly, a power margin reporting method is provided. The method is executed by a terminal, a component (processor, chip, circuit, or others) configured within the terminal, or a software module. The method includes sending third indication information to a network device. This third indication information indicates the power margin corresponding to multiple antenna panels or transmission beams in the terminal. The power margin corresponding to each antenna panel or transmission beam is determined based on the maximum transmit power and the expected transmit power corresponding to each antenna panel or transmission beam. It should be noted that in the design of this second aspect, each antenna panel or transmission beam corresponds to a maximum transmit power, a desired transmit power, and a power margin. The power margin corresponding to an antenna panel or transmission beam is determined based on the maximum transmit power and the expected transmit power corresponding to that antenna panel or transmission beam.

[0017] The above method expands the maximum transmit power of current terminals by defining the maximum transmit power for each antenna panel. The terminal determines the power margin for each antenna panel based on its maximum transmit power and the expected transmit power, and reports this power margin to the base station. Compared to a single design, this method, where the terminal determines the power margin based on its maximum transmit power and the expected transmit power of the antenna panels, improves the accuracy of the power margin reported to the base station.

[0018] In one design, the maximum transmit power corresponding to the plurality of antenna panels or transmit beams respectively satisfies at least one of the following: the sum of the maximum transmit power corresponding to the plurality of antenna panels or transmit beams does not exceed a first threshold; the sum of the actual radiated power of the maximum transmit power corresponding to the plurality of antenna panels or transmit beams does not exceed a second threshold; or the peak equivalent isotropic radiated power (EIRP) of the maximum transmit power corresponding to each of the plurality of antenna panels or transmit beams does not exceed a third threshold and is not lower than a fourth threshold.

[0019] In one design, the first threshold value and the second threshold value are preset maximum transmit power values.

[0020] In one design, the third threshold is a preset peak EIRP value, or the third threshold is a preset peak EIRP value minus an offset associated with the antenna panel or transmit beam.

[0021] In one design, the fourth threshold value is a preset minimum peak EIRP plus a power convergence-related amount, and then minus a power backoff-related amount and an offset related to the antenna panel or transmit beam, respectively.

[0022] Using the above method, since each antenna panel can only receive a portion of the power in uplink transmission across multiple antenna panels, setting the fourth threshold, i.e., the lower limit of peak EIRP, too high may prevent the terminal from selecting the maximum transmit power corresponding to each antenna panel that meets the conditions. However, by adopting the above design, setting the fourth threshold to the lower limit of peak EIRP minus an offset related to the antenna panel avoids setting the lower limit of peak EIRP too high, ensuring that the terminal can select the transmit power corresponding to each antenna panel that meets the conditions.

[0023] In one design, the power margins corresponding to the plurality of antenna panels or transmit beams are all actual power margins. The maximum transmit power corresponding to each antenna panel or transmit beam refers to the maximum transmit power corresponding to each antenna panel or transmit beam during a single uplink transmission. The expected transmit power corresponding to each antenna panel or transmit beam refers to the transmit power corresponding to each antenna panel or transmit beam determined by the terminal based on the power control parameters and uplink transmission scheduling parameters indicated by the network device.

[0024] Using the method described above, the terminal reports the actual power margin of each antenna panel to the base station. The actual power margin of each antenna panel is equal to the difference between the maximum transmit power of that antenna panel and the expected transmit power of that antenna panel. The expected transmit power of each antenna panel is determined based on the power control parameters and uplink scheduling parameters indicated by the base station. This method ensures that the terminal accurately reports the actual power margin of each antenna panel to the base station.

[0025] In one design, the actual power margin corresponding to the multiple antenna panels or multiple transmit beams is determined by the power control parameters and uplink scheduling parameters corresponding to the multiple antenna panels or multiple transmit beams in the same uplink transmission.

[0026] In one design, the power margins of the plurality of antenna panels or transmit beams are all virtual power margins. The maximum transmit power corresponding to each antenna panel or transmit beam refers to the maximum transmit power used by each antenna panel or transmit beam to determine the virtual power margin. The expected transmit power corresponding to each antenna panel or transmit beam refers to the transmit power corresponding to each antenna panel or transmit beam determined by the terminal according to the power control parameters indicated by the network device.

[0027] Using the method described above, the terminal reports the virtual power margin for each of the multiple antenna panels to the base station. For example, the virtual power margin for each antenna panel is equal to the difference between the maximum transmit power of that antenna panel and the expected transmit power of that antenna panel. The expected transmit power for each antenna panel is determined based on the power control parameters indicated by the base station. Using this method, the terminal can report the virtual power margin for each antenna panel to the base station with relatively high accuracy.

[0028] Thirdly, an apparatus is provided, comprising units or modules that perform the methods / operations / steps / actions described in the first or second aspect above, wherein the units or modules may be implemented by hardware circuits, or by software, or by a combination of hardware circuits and software.

[0029] Fourthly, an apparatus is provided, comprising a processor and a memory. The memory stores computer program instructions, and the processor is coupled to the memory; when the processor executes the computer program or instructions, the apparatus performs the methods described in the first or second aspect.

[0030] Fifthly, an apparatus is provided, comprising a processor capable of implementing the methods of the first or second aspect described above.

[0031] Optionally, regarding the fourth or fifth aspect above, the device may further include a communication interface for communication between the device and other devices, which may be network devices. The communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

[0032] In a sixth aspect, a computer-readable storage medium is provided, on which a computer program or instructions are stored, which, when executed on a computer, cause the computer to perform the methods of the first or second aspect described above.

[0033] In a seventh aspect, a computer program product is provided, comprising a computer program or instructions that, when executed on a computer, cause the computer to perform the methods described in the first or second aspect.

[0034] Eighthly, a chip system is provided, comprising a processor and potentially a memory, for implementing the methods of the first or second aspect described above. The chip system may be composed of chips or may include chips and other discrete devices.

[0035] Ninthly, a system is provided, which includes the means of the third, fourth or fifth aspects mentioned above, and a network device. Attached Figure Description

[0036] Figure 1 A schematic diagram of the communication system provided in this application; Figure 2 A schematic diagram illustrating multi-site transmission provided in this application; Figure 3 A schematic diagram of the power margin corresponding to the terminal reporting antenna panel provided in this application; Figure 4 , Figure 5 , Figure 6 and Figure 7 A flowchart of the power margin reporting method provided in this application; Figure 8 and Figure 9 A schematic diagram of the device provided in this application; Figure 10 A schematic diagram of the terminal provided in this application. Detailed Implementation

[0037] Figure 1 This is a schematic diagram of the architecture of the communication system 1000 used in this application. Figure 1 As shown, the communication system 1000 includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (such as...). Figure 1 (110a and 110b in the original text), may also include at least one terminal (such as...) Figure 1 (Referring to 120a-120j in the original text). Terminals connect wirelessly to the wireless access network (WLAN) equipment, which in turn connects to the core network via wireless or wired connections. The core network equipment and the WLAN equipment can be independent physical devices, or they can integrate the functions of the core network equipment and the logical functions of the WLAN equipment onto the same physical device. Alternatively, a single physical device can integrate some of the functions of both the core network equipment and the WLAN equipment. Terminals and WLAN equipment can be interconnected via wired or wireless connections. Figure 1 This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 It is not shown in the middle.

[0038] Wireless access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next-generation base station in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a wireless fidelity (WiFi) system; it can also be a module or unit that performs some of the functions of a base station, for example, it can be a central unit (CU) or a distributed unit (DU). The CU here performs the functions of the radio resource control (RRC) protocol and packet data convergence protocol (PDCP) of the base station, and can also perform the functions of the service data adaptation protocol (SDAP). The DU performs the functions of the radio link control (RLC) layer and medium access control (MAC) layer of the base station, and can also perform some or all of the physical (PHY) layer functions. For specific descriptions of the above protocol layers, please refer to the relevant technical specifications of the 3rd generation partnership project (3GPP). The radio access network equipment can be a macro base station (such as...) Figure 1 (e.g., 110a), or it can be a micro base station or an indoor station (such as...) Figure 1 (110b) can also be a relay node or donor node, etc. This application does not limit the specific technology or device form used in the wireless access network equipment. For ease of description, the following description uses a base station as an example of a wireless access network device.

[0039] A terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. This application does not limit the specific technology or device form used in the terminal.

[0040] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed in the air on aircraft, balloons, and satellites. This application does not limit the application scenarios for base stations and terminals.

[0041] The roles of base stations and terminals can be relative, for example, Figure 1 The helicopter or drone 120i can be configured as a mobile base station. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol; in this case, 120i is also a base station relative to 110a. Therefore, both base stations and terminals can be collectively referred to as communication devices. Figure 1 The 110a and 110b in the text can be referred to as communication devices with base station functions. Figure 1 The 120a-120j in the text can be referred to as communication devices with terminal functions.

[0042] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. This application does not limit the spectrum resources used for wireless communication.

[0043] In this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0044] In this application, the base station sends downlink signals or downlink information to the terminal, and the downlink signals or downlink information are carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink signals or uplink information are carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a radio connection with a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with this serving cell, it is also subject to interference from signals from neighboring cells.

[0045] During uplink transmission, the terminal needs to determine the appropriate transmit power to transmit the uplink signal. The transmit power cannot be too high, otherwise it will cause strong interference to neighboring cells; nor can it be too low, otherwise the signal received by the base station will be too weak. The terminal's transmit power P is determined as follows:

[0046] in, This represents the maximum transmit power that the terminal can use. It is the expected transmit power calculated by the terminal based on power control parameters and the current transmission scheduling situation (such as the amount of frequency domain resources). When No more than At that time, the expected transmission power As the transmission power. When Exceed hour, As the transmission power.

[0047] The terminal reports its power headroom (PHR) to the base station, which the base station uses to adjust the terminal's scheduling strategy. For example, the base station adjusts the frequency domain resources scheduled by the terminal and adjusts the closed-loop power control adjustment value P. TPC Etc. PHR is divided into real PHR and virtual PHR. Real PHR is calculated by the terminal based on the power used in a single actual uplink transmission. For example, real PHR = - Used to characterize the terminal's maximum transmit power With expected transmit power The difference between them. When > When PHR is positive, it indicates that the expected transmit power calculated based on the current scheduling is lower than the terminal's maximum transmit power, meaning there is still power margin. The terminal can report this power margin to the base station, which can then adjust its scheduling strategy. For example, in the next transmission, more frequency domain resources can be allocated to the terminal, or the closed-loop power control adjustment value P can be increased. TPC In order to utilize PHR. Or, when < When PHR is negative, it indicates the expected transmit power calculated based on the current scheduling situation. Greater than the terminal's maximum transmit power Because when Less than At that time, only one method can be used. As a transmit power, this can affect uplink transmission quality. The terminal reports this PHR to the base station, which then adjusts its scheduling strategy. For example, the base station might allocate fewer frequency domain resources to the terminal during the next uplink transmission, or lower the closed-loop power control adjustment value P. TPC To avoid the desired transmission power Exceed Terminals can report PHRs to the base station periodically or based on conditional triggers. When a terminal needs to report a PHR, if the terminal has not performed uplink transmissions within a certain period prior to that time, the terminal can report a virtual PHR to the base station.

[0048] A terminal can use one or more antenna panels to transmit data with a base station. Transmission using a single antenna panel is called single-panel transmission, and transmission using multiple antenna panels is called multi-panel transmission. An antenna panel, also known simply as a panel or antenna array, is used for beamforming. A single antenna panel can form beams in different directions. For example, ... Figure 2 As shown, the terminal includes antenna panel 1 and antenna panel 2. Antenna panel 1 communicates with site 1, and antenna panel 2 communicates with site 2. According to the method specified in the current protocol, the terminal determines the desired transmit power of one antenna panel. and the terminal's maximum transmit power and PHR= - Report to the base station. For example... Figure 3 As shown, the terminal can calculate the desired transmit power corresponding to antenna panel 1. and the terminal's maximum transmit power The PHR reported by the terminal to the base station is equal to the difference between the terminal's maximum transmit power and the expected transmit power corresponding to antenna panel 1, that is, the PHR reported by the terminal to the base station = - Alternatively, the terminal can calculate the desired transmit power corresponding to antenna panel 2 and the terminal's maximum transmit power. The PHR reported by the terminal to the base station is equal to the difference between the terminal's maximum transmit power and the desired transmit power corresponding to antenna panel 2, that is, the PHR reported by the terminal to the base station = - .exist Figure 3 In this context, the PHR is calculated by the terminal based on the expected transmit power corresponding to a single antenna panel. When the terminal uses multiple antenna panels for uplink transmission simultaneously, each antenna panel corresponds to a desired transmit power, and the actual PHR is smaller than the PHR calculated based on a single antenna panel. In other words, using the above... Figure 3 The PHR reporting method in the system results in a PHR value that is larger than the actual value. This makes it impossible for the base station to accurately optimize the power adjustment and scheduling of the terminal based on the PHR reported by the terminal, thus leading to a loss of transmission performance.

[0049] This application provides a PHR reporting method, comprising: when a terminal uses multiple antenna panels for uplink transmission, determining a PHR based on the sum of the terminal's maximum transmit power and the expected transmit power corresponding to the multiple antenna panels. For example, the determined PHR = the difference between the terminal's maximum transmit power and the sum of the expected transmit power corresponding to the multiple antenna panels, as can be found in [reference needed]. Figure 4 Alternatively, the terminal determines the PHR for each antenna panel based on the maximum transmit power and the expected transmit power for each antenna panel among multiple antenna panels; the terminal reports the PHR for each antenna panel to the base station, see [link to relevant documentation]. Figure 6 .

[0050] For ease of understanding, the communication terms or communication terminology used in this application are explained, and this explanation is also part of this application.

[0051] 1. Antenna panel.

[0052] An antenna panel can be the antenna panel of a terminal. An antenna panel can have one or more antenna elements arranged in an antenna array to perform beamforming, thereby forming an analog beam. These antenna arrays can generate beams pointing in different directions. In other words, each antenna panel can form a beam, and beam measurement can be used to determine which beam each antenna panel should use.

[0053] The terminal can be equipped with multiple antenna panels, which can be distributed in different locations and facing different directions. This ensures that regardless of the terminal's orientation, at least one antenna panel is always facing the base station, enabling data transmission. The terminal can simultaneously activate all antenna panels for transmission, or, to reduce power consumption, it can use only a single antenna panel for transmission at a time, turning off the other unused panels. The terminal typically needs to notify the base station whether its antenna panels are on or off; in other words, the terminal and base station generally need to exchange antenna panel status information.

[0054] In this application, unless otherwise specified, "antenna panel" refers to the antenna panel of the terminal. In the protocol, the antenna panel can be represented by "panel," "panel index," etc. Optionally, the antenna panel can also be implicitly represented in other ways. For example, the antenna panel can also be represented by antenna ports, such as channel state information reference signal (CSI-RS) ports, sounding reference signal (SRS) ports, demodulation reference signal (DMRS) ports, phase tracking reference signal (PTRS) ports, cell reference signal (CRS) ports, tracking reference signal (TRS) ports, or synchronization signal and physical broadcast channel block (SSB) ports, etc. Alternatively, the antenna panel can be represented by an antenna port group, which includes at least one antenna port, and the antenna port group may include antenna ports of the same or different types. Alternatively, the antenna port can be represented by channel characteristics, such as the Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), Physical Random Access Channel (PRACH), Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), and Physical Broadcast Channel (PBCH). Alternatively, the antenna port can be represented by a channel group, which includes at least one channel of the same or different types. For example, the channel group could be a control channel group.Alternatively, the antenna port can be represented by a set of terminal transmission capability parameters, such as quasi-co-location (QCL), transmission configuration indication (TCI), TCI-state, spatial relation, or by an index configured in the QCL, TCI-state, or spatial relation. Alternatively, the antenna panel can be beamformed, forming a beam in a specific direction; the antenna panel can be referred to as a beam. In uplink transmission, the antenna panel can be called a transmit beam, etc. The antenna panel in this application can be replaced with the above-mentioned components.

[0055] 2. Beam.

[0056] A beam is a directional, special transmission or reception effect formed by the transmitter or receiver of a base station or terminal through an antenna array, much like a flashlight focusing light in one direction to form a beam. Using beams to transmit and receive signals can effectively increase the transmission distance.

[0057] The beam can be a wide beam, a narrow beam, or other types of beam. The beamforming technology can be beamforming technology or other technologies. Specifically, beamforming technology can be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology, etc.

[0058] Beams are generally associated with resources. For example, during beam measurement, the base station measures different beams using different resources. The terminal reports the quality of the measured resources, and the base station knows the quality of the corresponding beam. In data transmission, beam information is also indicated through its corresponding resources. For example, the base station uses downlink control information... The TCI field in the DCI indicates a TCI-state, and the terminal determines the beam to use based on the reference resources contained in the TCI-state.

[0059] In communication protocols, a beam can be specifically represented as a digital beam, analog beam, spatial domain filter, spatial filter, spatial parameter, TCI, TCI-state, etc. The beam used to transmit signals can be called a transmission beam (or Tx beam), spatial domain transmission filter, spatial transmission filter, spatial domain transmission parameter, spatial transmission parameter, etc. The beam used to receive signals can be called a reception beam (or Rx beam), spatial domain reception filter, spatial reception filter, spatial domain reception parameter, spatial reception parameter, etc. The beam in this application can be replaced with the above terms.

[0060] 3. Effective isotropic radiated power (EIRP).

[0061] EIRP is the product of the transmitter's transmit power and the antenna gain in a given direction. Optionally, if both transmit power and antenna gain are expressed in decibels (dB), it is the sum of the two. The following explanation uses dB as the unit. EIRP is defined as: EIRP = P + G. P represents the transmitter's transmit power, and G represents the antenna gain of the transmitting antenna. When using an array antenna for beamforming, this antenna gain is the beam gain corresponding to that beam. That is, when using an array antenna for beamforming, G represents the beam gain corresponding to the beam. For example, if the transmitter's transmit power is 23 dBm, and a certain beam is used for transmission with a beam gain of 6 dB, the transmitter's EIRP is 23 + 6 = 29 dBm. Optionally, the beam gain may differ in different beam directions, therefore the EIRP corresponding to different beam directions may also differ. The beam with the highest beam gain has the highest EIRP, which can be called the peak EIRP. For example, if the maximum beam gain is 9dB and the transmitter's transmit power is 23dBm, then the transmitter's peak EIRP is equal to 23+9=32dBm.

[0062] It should be noted that dBm is a unit representing the absolute value of power. For example, the formula for calculating dBm is: Xmw = 10 log10(X) dBm. For example, a transmit power P0 = 1000 mW is equivalent to a transmit power P0 = 30 dBm. dB is a value characterizing a relative power. Specifically, Y times = 10 log10(Y) dB. For example, if P2 is twice as large as P1, then 10 log10(P2 / P1) = 3dB, meaning P2 has 3dB more power than P1. In this application, dBm is called the logarithmic power unit, while watts (W) and milliwatts (mW) are called linear power units. The logarithmic power unit dBm is a logarithmic transformation of the linear power unit. For example, as mentioned earlier, X mW = 10 log10(X) dBm.

[0063] like Figure 4 As shown, this application provides a flow chart for a power headroom (PHR) reporting method, which includes at least the following: Step 401: The terminal sends a first indication information to the base station, which is used to indicate a PHR.

[0064] For example, a terminal includes multiple antenna panels, each corresponding to a desired transmit power. The terminal determines the desired transmit power corresponding to each of the multiple antenna panels and the terminal's maximum transmit power. The PHR reported by the terminal is equal to the difference between the terminal's maximum transmit power and the sum of the desired transmit powers corresponding to each of the multiple antenna panels. Alternatively, it can be described as: the PHR calculated by the terminal is equal to the difference between the terminal's maximum transmit power and the sum of the desired transmit powers corresponding to each of the multiple antenna panels. The terminal can send the calculated PHR indication information to the base station, i.e., the first indication information in step 401. This first indication information can explicitly indicate the calculated PHR, for example, it can indicate the binary bits corresponding to the PHR, or it can implicitly indicate the calculated PHR, for example, it can indicate other information related to the calculated PHR. The base station can deduce the corresponding PHR through this other information. Alternatively, the terminal can directly report the calculated PHR to the base station. The description of step 401 above can be replaced with: the terminal reports the PHR to the base station. Alternatively, the terminal may send a notification message to the base station, which carries the PHR calculated by the terminal. The description of step 401 above can be replaced with: the terminal reports a notification message to the base station, which carries the PHR calculated or reported by the terminal. In this application, the antenna panel may be simply referred to as a panel, and the antenna panel may also be replaced with names such as transmission beam; for details, please refer to the description of antenna panel or beam in the aforementioned communication terminology.

[0065] In one design, the terminal can report its actual transmit power (PHR) to the base station. The actual PHR is calculated by the terminal based on the power used in a single uplink transmission. The actual PHR equals the terminal's maximum transmit power (Pcmax) minus its desired transmit power. The difference between them. When > When PHR is positive, it indicates that the expected transmit power calculated based on the current scheduling is lower than the terminal's maximum transmit power, meaning there is still power margin. The terminal can report this margin value to the base station, which can then adjust its scheduling strategy. For example, the base station can allocate more frequency domain resources to the terminal during the next uplink transmission scheduling, or increase the closed-loop power control adjustment value P. TPC In order to utilize the power margin. When < When PHR is negative, it indicates that the expected transmit power calculated based on the current scheduling situation is greater than the terminal's maximum transmit power. Because < The transmission power can only be used This can affect uplink transmission quality. The terminal reports the PHR value to the base station, which then adjusts its scheduling strategy. For example, the base station may allocate fewer frequency domain resources to the terminal during the next uplink transmission scheduling, or lower the closed-loop power control adjustment value P. TPC To avoid the desired transmission power Exceed .

[0066] The terminal can determine the maximum transmit power. The maximum transmission power This refers to the maximum transmit power used by the terminal in a single transmission. For example, the terminal can transmit power that meets conditions one and two below. Within the range of possible values, select a reasonable value as... .

[0067] Condition 1: Ptmax <= TRPmax. Ptmax indicates that the terminal uses... During transmission, the total power actually radiated from the terminal, i.e. Ptmax is the theoretical maximum transmit power emitted by the terminal, while Ptmax is the actual maximum power radiated. The value of Ptmax may differ from that of Pcmax. For example, due to energy loss when the signal passes through certain devices, the actual total radiated power Ptmax may be less than Pcmax. Under this constraint, the Pcmax selected by the terminal cannot cause the actual total radiated energy to exceed the maximum total transmit power TRPmax specified in the protocol.

[0068] Condition 2: EIRPmin+ P IBE -MPR <= Pumax <= EIRPmax. Pumax represents the EIRP in the strongest beam direction when the terminal uses Pcmax for actual transmission, called the peak EIRP. EIRPmax is the maximum peak EIRP specified by the protocol. EIRP is the radiated power of the terminal in a specified direction, such as a specified beam direction. Ideally, this EIRP equals the transmit power plus the antenna gain, which can refer to the beam gain, etc. EIRPmin is the minimum peak EIRP specified by the protocol. Under the constraint of condition two, the Pcmax selected by the terminal cannot cause Pumax (peak EIRP) to exceed the maximum peak EIRP, nor can it cause Pumax to fall below the lower limit of the peak EIRP. This lower limit of EIRP is expressed as the minimum peak EIRP specified by the protocol plus a quantity related to power convergence. P IBEThis is calculated by subtracting a power back-off related quantity, such as the maximum output power reduction (MPR). In actual transmission, a high peak-to-average power ratio (PAPR) may affect transmission efficiency, necessitating a reduction in transmit power; this phenomenon is called power back-off. Terminal power back-off is related to various factors. Considering the potential for power back-off in terminals, it is necessary to factor in the EIRP lower limit, i.e., setting the lower limit as EIRPmin - MPR (rather than directly using the protocol-specified EIRPmin). MPR is the power back-off amount, related to factors such as waveform, modulation scheme, frequency domain resource allocation, regulatory constraints on maximum permissible radiation, and measurement tolerance; it is actually a relatively complex expression. For ease of description, it is uniformly represented by the variable MPR.

[0069] In condition two above, EIRPmin+ P IBE -MPR<=Pumax<=EIRPmax is a simplified way of writing it. In one possible description, the second condition above can be described as: P Powerclass + P IBE – MAX(MAX(MPR f,c A- MPR f,c ) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P-MPR f,c )} ≤ P UMAX,f,c ≤ EIRPmax; In the above description, the actual expression for MPR can be considered as: MAX(MAX(MPR) f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P-MPR f,c )}. Among them, P Powerclass This represents the minimum peak EIRP value specified in the protocol. P IBE MPR represents a quantity related to power convergence. f,c A-MPR represents the maximum output power reduction (MPR) corresponding to carrier f in cell c.f,c P-MPR represents the additional maximum power reduction (P-MPR) corresponding to carrier f in cell c. f,c ΔMB represents the power management UE maximum power reduction corresponding to carrier f in cell c. P,n T(X) represents the relaxation of peak EIRP, which is a formula representing the tolerance for X. EIRPmax represents the maximum peak EIRP specified by the protocol. P UMAX,f,c This indicates the maximum transmit power when the terminal transmits an uplink signal on carrier f in cell c.

[0070] The terminal determines the expected transmit power for each of the multiple antenna panels. This expected transmit power refers to the power determined by the terminal for each antenna panel based on power control parameters and uplink scheduling parameters indicated by the base station. Alternatively, in actual PHR reporting, the expected transmit power for each antenna panel in the terminal is determined based on power control parameters and uplink scheduling parameters indicated by the base station. Optionally, the base station can configure the same or different power control parameters for different antenna panels in the terminal. For example, the base station can configure multiple power control parameters for the terminal via RRC signaling. Multiple antenna panels of the terminal can share a set of power control parameters, or different antenna panels can use different power control parameters; there is no restriction. Each set of power control parameters configured by the base station for the terminal includes at least one of the following: P0: Target received power for each resource block (RB). An RB can refer to the RB on which the terminal transmits uplink signals. The terminal transmits uplink signals on at least one RB, and the base station receives uplink signals on the corresponding RB. The target received power for each RB refers to the target power of the uplink signals that the base station expects to receive on each RB on which it transmits uplink signals.

[0071] Path loss (PL) measurement resources: The base station allocates these path loss measurement resources to the terminal. The terminal measures the reference signal on these path loss measurement resources to determine the signal energy loss from the base station to the terminal, or from the terminal to the base station. This signal energy loss is called path loss PL.

[0072] a: Road loss compensation coefficient, a is between 0 and 1, used to indicate how much of the uplink transmission power should be compensated for road loss.

[0073] Or the closed-loop power control identifier: This application does not involve the specific details of the closed-loop power control identifier, and will not go into further detail.

[0074] In actual PHR reporting, the process by which the terminal determines the expected transmit power corresponding to an antenna panel is as follows: =P0+P RB +a PL+P MCS +P TPC ; in, P0 represents the expected transmit power of one antenna panel of the terminal; P0 represents the target receive power of one RB of the terminal's uplink signal transmission, which is indicated to the terminal by the base station, that is, the base station needs to indicate to the terminal its expected receive power on one RB; P RB This represents an offset determined by the number of RBs, P0+P RB N represents RB The target received power of each RB; PL represents the signal loss experienced from the terminal to the base station, called path loss; PL is measured by the terminal based on the path loss measurement resources configured by the base station. 'a' represents the path loss compensation coefficient; a PL represents the path loss that needs to be compensated. a=1 indicates that all path loss needs to be compensated, while a<1 indicates that only a portion of the path loss needs to be compensated. The value of a is indicated to the terminal by the base station. P MCS This is an offset related to the modulation and coding scheme (MCS). Whether to use this offset is configurable, meaning whether the terminal uses this offset for calculation. The information is sent from the base station to the terminal; P TPC This is the power adjustment value indicated by the closed-loop power control signaling sent by the base station to the terminal. Desired transmit power. Calculations are performed in dB and dBm. Specifically, P0 is measured in dBm. RB PL, P MCS and P TPC The unit for these values ​​is dB.

[0075] As previously mentioned, during the actual PHR reporting process, the terminal determines the maximum transmit power Pcmax and the expected transmit power of an antenna panel. The process involves determining the true transmit power (PHR) of the terminal based on the sum of the terminal's maximum transmit power (Pcmax) and the expected transmit power of the multiple antenna panels. For example, the true PHR is equal to the difference between the terminal's maximum transmit power and the sum of the expected transmit power of the multiple antenna panels. ; Wherein, PHR represents the actual PHR reported by the terminal, and Pcmax represents the terminal's maximum transmit power. This represents the expected transmit power of the i-th antenna panel in the terminal, where i is greater than or equal to 1 and less than or equal to n, and n represents the total number of antenna panels in the terminal.

[0076] Taking a terminal with two antenna panels as an example, the actual PHR reported by the terminal meets the following conditions: ; Wherein, PHR represents the actual PHR reported by the terminal, and Pcmax represents the terminal's maximum transmit power. This indicates the desired transmit power corresponding to antenna panel 1 of the terminal. This indicates the expected transmit power corresponding to antenna panel 2 of the terminal.

[0077] For example, and The calculation method, and the aforementioned The calculation method is the same. For example, when using the aforementioned The calculation formula, calculation When determining the value of , the terms on the right side of the equation in the above formula are based on... The power control parameters and scheduling parameters of the corresponding antenna panel 1 are determined, for example, P0, a, and PL, etc., through... The power control parameters of the corresponding antenna panel 1 are determined, P RB and P MCS Waiting to pass The uplink transmission scheduling parameters corresponding to antenna panel 1 are determined, P TPC yes The corresponding uplink transmission closed-loop power control adjustment value for antenna panel 1. For The calculation method is similar and will not be repeated here.

[0078] In another design, the PHR reported by the terminal is a virtual PHR. In the reporting of the virtual PHR, the terminal's maximum transmit power refers to the maximum transmit power used to determine the virtual power margin, which can be expressed as: The expected transmit power of the antenna panel refers to the expected transmit power of the antenna panel determined by the terminal based on the power control parameters indicated by the base station. It can be considered a reference transmit power and can be expressed as... Virtual power margin Virtual PHRs are suitable for situations where there is no uplink scheduling. For example, if a PHR is reported periodically, and no uplink transmission has occurred recently when the next PHR is to be reported, only a rough reference value can be calculated for the base station to refer to.

[0079] In the virtual PHR reporting, the terminal determines the maximum transmit power. The process is similar to the process by which the terminal determines the maximum transmit power Pcmax in a real PHR report. The terminal can select a suitable value from the maximum transmit power that satisfies conditions one and two above. Unlike real PHR reporting, virtual PHR reporting does not consider the power back-off amount (MPR) in condition two for determining the terminal's maximum transmit power. That is, MPR does not need to be subtracted from the lower limit of peak EIRP (EIRPmin) on the left-hand side of the inequality in condition two. For example, a suitable value can be selected from the maximum transmit power satisfying conditions one and two as... .

[0080] Condition 1: Ptmax <= TRPmax.

[0081] Condition 2: EIRPmin <= Pumax <= EIRPmax.

[0082] In the virtual PHR reporting, the terminal determines the desired transmit power of an antenna panel. The process, in the actual PHR reporting, involves the terminal determining the expected transmit power of an antenna panel. The difference in the process lies in the aforementioned determination. The right side of the inequality in the formula does not contain P. RB and P mcs The main reason is that these two factors are related to the actual amount of frequency domain resources and the modulation and coding scheme. However, in virtual PHR reporting, no uplink transmission actually occurs; only a reference value is reported. Therefore, P is not included in the calculation of virtual PHR. RB and P mcs In other words, in virtual PHR reporting... It is a relatively fixed reference value calculated through some fixed power control parameters. For example, in virtual PHR reporting, the terminal determines the expected transmit power of an antenna panel, which satisfies the following conditions: For the specific meaning of each parameter in the following formula, please refer to the aforementioned determination. Explanation in the formula.

[0083] =P0+a PL+P TPC ;

[0084] As previously described, the reporting of a virtual PHR involves the terminal determining its maximum transmit power and the expected transmit power of one antenna panel. The terminal can determine the virtual PHR based on the determined maximum transmit power and the expected transmit power of multiple antenna panels. For example, the virtual PHR is equal to the difference between the terminal's maximum transmit power and the sum of the expected transmit powers of the multiple antenna panels. For instance, the virtual PHR reported by the terminal satisfies the following conditions: ; in, Indicates virtual power margin. This indicates the terminal's virtual maximum transmit power. This represents the virtual expected transmit power corresponding to the i-th antenna panel of the terminal, where i is a positive integer less than or equal to n, and n represents the total number of antenna panels in the terminal.

[0085] Taking a terminal with two antenna panels as an example, the process of the terminal determining the virtual PHR satisfies the following conditions: ; in, Indicates virtual power margin; This represents the terminal's virtual maximum transmit power; the calculation process can be found in the aforementioned explanation. and These represent the expected transmit power corresponding to antenna panel 1 and antenna panel 2, respectively. and The calculation method and the aforementioned Similarly, it also uses a formula for calculation; you only need to add the above... Each term on the right-hand side of the formula can be replaced with the parameter corresponding to each antenna panel. For example, in calculating... Then, the above-mentioned parameters are determined based on the power control parameters and scheduling parameters corresponding to antenna panel 1. The terms on the right side of the equation in the formula. For example, P0, a, PL, etc., are determined based on the power control parameters of antenna panel 1, and P is determined based on the uplink transmission scheduling parameters of antenna panel 1. RB and P MCS Wait, P TPC It is the uplink transmission closed-loop power control adjustment value corresponding to antenna panel 1. The process of determining is similar to that described above and will not be repeated here.

[0086] Optionally, the reporting of the aforementioned real or virtual PHR can be at the cell level. That is, for each cell, the terminal only reports one PHR value, which can be a real PHR or a virtual PHR, etc. Different cells can report different PHR values.

[0087] Step 402: The base station adjusts the terminal's scheduling strategy based on the PHR reported by the terminal. This step 402 is optional.

[0088] Taking the terminal's reported actual PHR as an example. If the actual PHR is positive, it means that the actual expected transmit power calculated based on the current scheduling is lower than the terminal's maximum transmit power, i.e., there is still power margin. In this case, the base station can schedule more frequency domain resources for the terminal in the next transmission, or increase the closed-loop power control adjustment value P. TPC This allows the power margin to be utilized. Alternatively, if the PHR is negative, it indicates that the expected transmit power calculated based on the current scheduling is greater than the terminal's maximum transmit power. Since the terminal can only transmit uplink signals at its maximum transmit power when its maximum transmit power is less than the expected transmit power, uplink transmission quality will be affected. When the base station receives a negative actual PHR, it can allocate fewer frequency domain resources for the terminal in the next transmission, or lower the closed-loop power control adjustment value P. TPC This is to avoid situations where the calculated expected transmit power exceeds the terminal's maximum transmit power during the next transmission.

[0089] Optionally, in addition to reporting the power margin indicated by the first indication information to the base station, the terminal can also report more detailed information about the power margin indicated by the second indication information to the base station, enabling the base station to better optimize subsequent uplink transmission. This second indication information indicates at least one of the following: the relationship between the expected transmit power corresponding to different antenna panels, the relationship between the path loss measurement values ​​corresponding to different antenna panels, and the power margin corresponding to each antenna panel. For example, the relationship between the expected transmit power corresponding to different antenna panels includes: the difference, proportional relationship, or magnitude relationship between the expected transmit power corresponding to different antenna panels. The relationship between the path loss measurement values ​​corresponding to different antenna panels includes: the difference, proportional relationship, or magnitude relationship between the path loss measurement values ​​corresponding to different antenna panels. Unlike the above, the power margin corresponding to each antenna panel reported in the second indication information is determined based on the terminal's maximum transmit power and the expected transmit power of each antenna panel. Taking a terminal with two antenna panels as an example, the second indication information separately indicates the power margin of the two antenna panels. This power margin PHR can be either a real PHR or a virtual PHR, without limitation. Taking a real PHR as an example, the real power margin of antenna panel 1 is equal to: the maximum transmit power Pcmax of the terminal and the expected transmit power of antenna panel 1. The difference, that is The actual power margin of antenna panel 2 is equal to: the maximum transmit power of the terminal and the expected transmit power of antenna panel 2. The difference, that is In this application, the second indication information and the first indication information in step 401 can be reported together. For example, the first and second indication information can be carried in the same message. For instance, the terminal sends a MAC control element (CE) to the base station, and the MAC CE includes the first and second indication information. Alternatively, the first and second indication information can be reported separately, for example, they can be carried in different messages. For instance, the terminal sends MAC CE1 and MAC CE2 to the base station respectively, where MAC CE1 includes the first indication information and MAC CE2 includes the second indication information.

[0090] exist Figure 4 In the reporting process, when a terminal uses multiple antenna panels for uplink transmission, the terminal determines the PHR based on the sum of the terminal's maximum transmit power and the expected transmit power of the multiple antenna panels. In contrast, determining the PHR based on the terminal's maximum transmit power and the expected transmit power of only one antenna panel when the terminal uses multiple antenna panels for uplink transmission improves the accuracy of PHR determination. This allows the base station to accurately optimize power adjustment and scheduling for the terminal based on the reported PHR, thereby improving the performance of uplink transmission with multiple antenna panels.

[0091] like Figure 5 As shown, a process for reporting power margin is provided. Figure 5 The process in the middle can be used as Figure 4 A specific implementation of the process includes at least: Step 501: The base station configures power control parameters for the terminal.

[0092] For example, the base station sends RRC configuration signaling to the terminal, which is used to configure power control parameters for the terminal.

[0093] The RRC signaling can configure one or more sets of power control parameters for the final antenna panels. For example, the base station can configure different power control parameters for different antenna panels in the terminal via RRC signaling. Alternatively, it can configure one set of power control parameters for the terminal via RRC signaling, with multiple antenna panels sharing the same set of power control parameters. Or, it can configure at least two sets of power control parameters for the terminal via RRC signaling. For example, if a terminal has 5 antenna panels and the base station configures 4 sets of power control parameters for the terminal via RRC signaling, then 2 of the 5 antenna panels will share the same set of power control parameters. The power control parameters configured by the base station for the terminal are mainly used by the terminal to determine the desired transmit power of the antenna panels. Each set of power control parameters includes at least one of the following: the target received power P0 corresponding to each RB, path loss measurement resources, path loss compensation coefficient a, or a closed-loop power control identifier, etc.

[0094] Step 502: The terminal calculates the PHR.

[0095] Taking an example where each antenna panel has its own independent power control parameters, in uplink transmission using multiple antenna panels, the terminal can determine the expected transmit power of each antenna panel based on its corresponding power control parameters. Of course, in actual PHR reporting, the process of determining the expected transmit power of each antenna panel also needs to consider the influence of the uplink scheduling parameters corresponding to each antenna panel. The terminal determines the PHR based on its maximum transmit power and the sum of the expected transmit powers of multiple antenna panels. For example, the PHR value is equal to the difference between the terminal's maximum transmit power and the sum of the expected transmit powers of multiple antenna panels. The PHR is divided into actual PHR and virtual PHR, etc., for details please refer to [link to relevant documentation]. Figure 4 The explanation in the document.

[0096] Step 503: The terminal reports the PHR to the base station.

[0097] Optionally, to enable the base station to better optimize subsequent uplink transmission, in addition to reporting the PHR to the base station, the terminal can also report more power-related information to the base station. This additional power-related information can be reported together with the PHR, or independently, without restriction. Taking a terminal with two antenna panels as an example, the additional power-related information reported by the terminal includes at least one of the following: The relationship between the expected transmit power of antenna panel 1 and antenna panel 2. This relationship can be the difference between the two, a proportional relationship, or a magnitude relationship, etc.

[0098] The relationship between the path loss measurements corresponding to antenna panel 1 and antenna panel 2. This relationship can be the difference between the two, a proportional relationship, or a magnitude relationship, etc.

[0099] The PHR1 is determined based on the terminal's maximum transmit power and the expected transmit power corresponding to antenna panel 1. For example, the value of PHR1 is equal to the difference between the terminal's maximum transmit power and the expected transmit power corresponding to antenna panel 1.

[0100] Alternatively, PHR2 can be determined based on the terminal's maximum transmit power and the expected transmit power corresponding to antenna panel 2. For example, the value of PHR2 is equal to the difference between the terminal's maximum transmit power and the expected transmit power corresponding to antenna panel 2.

[0101] Using the above method, in the uplink transmission mode using multiple antenna panels, the terminal accurately reports the total power margin to the base station, so that the base station can optimize subsequent uplink transmission scheduling and power control, thereby improving the performance of uplink transmission using multiple antenna panels.

[0102] like Figure 6As shown, this application also provides a process for a PHR reporting method, which is the same as the above. Figure 4 The process differs from the previous one. In this process, the terminal reports multiple PHRs, each corresponding to an antenna panel. The PHR for each antenna panel is determined based on the maximum transmit power and the desired transmit power for that antenna panel. This process includes at least the following: Step 601: The terminal sends a third indication information to the base station, which is used to indicate the PHR corresponding to the multiple antenna panels in the terminal.

[0103] In this design, the power margin corresponding to each antenna panel is determined based on the maximum transmit power and the expected transmit power of each antenna panel. Each antenna panel of the terminal corresponds to a maximum transmit power, an expected transmit power, and a power margin. Unlike current solutions, this design allocates the maximum transmit power to different antenna panels in the terminal based on the terminal's maximum transmit power. The power margin corresponding to each antenna panel in the terminal is equal to the difference between the maximum transmit power of that antenna panel and the expected transmit power of that antenna panel. In this application, the third indication information in step 601 can explicitly indicate the PHR of multiple antenna panels or implicitly indicate the PHR of multiple antenna panels, without limitation. Optionally, the third indication information can be carried in a single message or in different messages, such as a MAC CE. For example, the terminal can send multiple MAC CEs to the base station to indicate the PHR of different antenna panels. Alternatively, the terminal can send a single MAC CE to the base station, which can indicate the PHR of multiple antenna panels. Alternatively, the terminal can directly report the PHRs of multiple antenna panels to the base station. Step 601 above can be replaced by: the terminal reporting the PHR corresponding to each of the multiple antenna panels to the base station. In the description of this application, the term "antenna panel" can be replaced with names such as "transmit beam," and for details, please refer to the description of antenna panels or beams in the aforementioned communication terminology.

[0104] For example, a terminal may include multiple antenna panels. The terminal can determine the maximum transmit power (PHR) and the desired transmit power (PHR) for each antenna panel. For any antenna panel i among the multiple antenna panels, the PHR for antenna panel i is equal to the difference between the maximum transmit power and the desired transmit power for antenna panel i. For the process of the terminal determining the desired transmit power for each antenna panel, please refer to [link to relevant documentation]. Figure 4 The description is as follows. In one design, the terminal can be configured according to the above... Figure 4The description in the document determines the maximum transmit power of the terminal. Based on the number of antenna panels and the terminal's maximum transmit power, the terminal determines the maximum transmit power of different antenna panels. For example, if the terminal includes N antenna panels, where N is an integer greater than 1, the maximum transmit power of antenna panel i is: the terminal's maximum transmit power / N, where i is an integer greater than or equal to 1 and less than N. Alternatively, it can be related to... Figure 4 The process of determining the maximum transmit power of a terminal is similar. The terminal can determine the maximum transmit power of each of the multiple antenna panels within a range that meets certain conditions. For example, the maximum transmit power of the multiple antenna panels must satisfy at least one of the following: Condition 1: The sum of the maximum transmit power of multiple antenna panels does not exceed the first threshold value; Condition 2: The sum of the actual radiated power corresponding to the maximum transmit power of multiple antenna panels does not exceed the second threshold value; Condition 3: The peak EIRP corresponding to the maximum transmit power of each of the multiple antenna panels does not exceed the third threshold and is not lower than the fourth threshold.

[0105] The first and second thresholds are preset (or protocol-specified) maximum transmit power values. The third threshold is a preset (or protocol-specified) peak EIRP value, or a preset (or protocol-specified) peak EIRP value minus an offset value related to the antenna panel. The fourth threshold value is the preset (or protocol-specified) minimum peak EIRP plus a power pooling-related amount. P IBE Subtract the amount related to power back-off (MPR), and then subtract an offset. This offset can be an amount related to the transmit antenna panel. For example, when transmitting using a single antenna panel, this offset either does not exist or its value is 0. The offset only exists, or its value is not equal to 0, when multiple antenna panels are used for simultaneous transmission. The value of this offset is related to the corresponding antenna panel, such as the number of antenna ports on the antenna panel and the parameters of the power amplifier. The value of this offset can also be related to the number of antenna panels used for simultaneous transmission; for example, when two antenna panels are used for simultaneous transmission, the offset is equal to 3dB.

[0106] In one design, the terminal can report the actual PHR to the base station. The actual PHR is calculated by the terminal based on the power used in a single uplink transmission. In this design, the terminal can report the actual PHR for each antenna panel to the base station. The actual PHR for each antenna panel is equal to the difference between the maximum transmit power corresponding to each antenna panel and the expected transmit power corresponding to each antenna panel. The maximum transmit power corresponding to each antenna panel refers to the maximum transmit power of each antenna panel in a single uplink transmission. The expected transmit power corresponding to each antenna panel refers to the transmit power of each antenna panel determined by the terminal based on the power control parameters and uplink scheduling parameters indicated by the base station. Optionally, the actual PHR of multiple antenna panels is determined by the power control parameters and uplink scheduling parameters corresponding to the multiple antenna panels in the same uplink transmission.

[0107] Taking the uplink transmission of the two antenna panels of the terminal as an example, the actual PHR of the two antenna panels meets the following conditions: ; ; Wherein, PHR1 and PHR2 represent the actual PHR corresponding to antenna panel 1 and antenna panel 2, respectively. Pcmax1 and Pcmax2 represent the maximum transmit power corresponding to antenna panel 1 and antenna panel 2, respectively. and These represent the expected transmit power corresponding to antenna panel 1 and antenna panel 2, respectively.

[0108] For the process of determining the desired transmit power of the two antenna panels by the terminal, please refer to [link to relevant documentation]. Figure 4 The process by which the terminal determines the maximum transmit power corresponding to each of the two antenna panels may include: Pcmax1 and Pcmax2 can both be equal to Pcmax / 2, dividing the terminal's maximum transmit power Pcmax equally and using each division as the maximum transmit power of the two antenna panels. Alternatively, similar to Pcmax, the values ​​of Pcmax1 and Pcmax2 can be determined by the terminal from a range of values ​​that meet certain conditions. Specifically, these conditions must be one or more of the following: Condition one: + <=TRPmax.

[0109] and These represent the maximum transmit power corresponding to antenna panel 1 and antenna panel 2, respectively, with TRPmax representing the maximum total transmit power specified in the protocol. As defined in condition one above, the sum of the maximum transmit power of the two antenna panels ( + The total transmit power of the terminal shall not exceed the maximum value of TRPmax specified in the protocol. The units for Pcmax1, Pcmax2, and TRPmax are linear power units such as watts (W) or milliwatts (mW).

[0110] Condition two: + <=TRPmax.

[0111] and These respectively indicate that antenna panel 1 and antenna panel 2 respectively adopt and The actual radiated power when transmitting uplink signals. Condition two stipulates that the sum of the actual radiated power from the two antenna panels shall not exceed the maximum total transmit power TRPmax specified in the protocol. , The units for TRPmax are linear power units such as watts (W) or milliwatts (mW).

[0112] Condition three: <=TRPmax.

[0113] This indicates that antenna panel 1 and antenna panel 2 respectively adopt and The sum of the actual radiated power when transmitting uplink signals. This third condition is essentially the same constraint as the aforementioned second condition, except that their descriptions differ slightly.

[0114] Condition 4: EIRPmin + P IBE -MPR- 1 <= Pumax1 <= EIRPmax; EIRPmin+ P IBE -MPR- 2 <= Pumax2 <= EIRPmax.

[0115] Wherein, Pumax1 and Pumax2 represent the two antenna panels of the terminal, respectively using... and In this case, the peak EIRP corresponding to each of the two antenna panels. EIRPmin and EIRPmax represent the minimum and maximum peak EIRP values ​​specified in the protocol, respectively. P IBE This indicates a quantity related to power convergence. MPR indicates a quantity related to power reversion. 1 and 2 represents two offsets. These offsets can be quantities related to the transmitting antenna panel. For example, when using a single antenna panel for transmission, this offset either doesn't exist or its value is 0. The offset only exists, or its value is not equal to 0, when using multiple antenna panels for simultaneous transmission. The value of this offset is related to the corresponding antenna panel, such as the number of antenna ports and power amplifier parameters. The value can also be related to the number of antenna panels used for simultaneous transmission; for example, when using two antenna panels for simultaneous transmission, the offset is equal to 3dB. The values ​​of these two offsets can be the same or different. For example, they can be determined separately based on the specifications of the two antenna panels. 1 and 2. As specified in condition four above, the peak EIRP corresponding to each of the two antenna panels should be greater than or equal to the lower limit of the peak EIRP. This lower limit of the peak EIRP is equal to the minimum peak EIRP specified in the protocol plus the amount related to power pooling. P IBE Subtract the amount MPR associated with power back-off, and then subtract an additional offset. It is less than or equal to the peak EIRP upper limit. It should be understood that in the above formula... 1 and 2 is used to characterize an additional offset, but does not restrict the variable form of that offset in the protocol. 1 and 2. These two variable forms are only examples; these two offsets can be represented in any form.

[0116] In condition four, the constraints on Pumax1 and Pumax2 are... Figure 4 The overall constraint structure in the process is approximate. The difference lies in the fact that a value is further subtracted from the left side of condition four (i.e., the peak EIRP min value). This value is related to the antenna panel. Subtract this value from the left side of the inequality in condition four above. The reasons include: when the terminal uses two antenna panels for transmission, both antenna panels can only receive partial power. Therefore, a value needs to be subtracted from the lower limit; otherwise, the lower limit will be set too high, causing the terminal to be unable to select a P that meets the conditions. and In condition four above, all parameters are expressed in logarithmic units of dBm or dB.

[0117] Optionally, the inequality in condition four above can be extended. For example, one or more values ​​can be added to or subtracted from the minimum or maximum peak EIRP value in condition four above. For example, taking Pumax1 corresponding to antenna panel 1 as an example, in condition four above: EIRPmin + P IBE -MPR- 1 <= Pumax1 <= EIRPmax, can also be replaced with: EIRPmin + P IBE -MPR <=Pumax1<= EIRPmax- 1; or, EIRPmin + P IBE –MPR - 1 <= Pumax1 <= EIRPmax- First class.

[0118] Understandably, a similar extension can be made to the Pumax2 corresponding to antenna panel 2.

[0119] Optionally, condition four above can also be described as: P Powerclass + P IBE – MAX(MAX(MPR f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P-MPR f,c )} - 1≤ P UMAX,f,c,1 ≤ EIRPmax; P Powerclass + P IBE –MAX(MAX(MPR f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P- MPR f,c )} - 2≤ P UMAX,f,c,2 ≤ EIRPmax.

[0120] Alternatively, condition four above can be described as: P Powerclass + P IBE– MAX(MAX(MPR f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P-MPR f,c )}≤ P UMAX,f,c,1 ≤ EIRPmax - 1; P Powerclass + P IBE –MAX(MAX(MPR f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P- MPR f,c )}≤ P UMAX,f,c,2 ≤ EIRPmax - 2.

[0121] Alternatively, condition four above can be described as: P Powerclass + P IBE – MAX(MAX(MPR f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P-MPR f,c )} - 1≤ P UMAX,f,c,1 ≤ EIRPmax- 1; P Powerclass + P IBE –MAX(MAX(MPR f,c A- MPR f,c ,) + ΔMB P,n P-MPR f,c ) – MAX{T(MAX(MPR f,c A- MPR f,c ,)), T(P- MPRf,c )} - 2≤ P UMAX,f,c,2 ≤ EIRPmax- 2.

[0122] Among them, P Powerclass This represents the minimum peak EIRP value. P IBE MPR represents a quantity related to power convergence. f,c A-MPR represents the maximum output power reduction (MPR) corresponding to carrier f in cell c. f,c P-MPR represents the additional maximum power reduction (P-MPR) corresponding to carrier f in cell c. f,c ΔMB represents the maximum power reduction for power management UEs corresponding to carrier f in cell c. P,n T(X) represents the relaxation amount of peak EIRP, and is a formula representing the tolerance for x. EIRPmax represents the maximum value of peak EIRP. P UMAX,f,c,1 This indicates the maximum transmit power corresponding to antenna panel 1 when the terminal transmits an uplink signal on carrier f in cell c. UMAX,f,c,2 This indicates the maximum transmit power corresponding to antenna panel 2 when the terminal transmits an uplink signal on carrier f in cell c.

[0123] In another design, the terminal can report a virtual PHR to the base station. This virtual PHR reporting involves the terminal reporting the virtual PHRs of multiple antenna panels. The virtual PHR for each antenna panel is equal to the difference between the maximum transmit power corresponding to that antenna panel and the expected transmit power corresponding to that antenna panel. Here, the virtual transmit power corresponding to each antenna panel refers to the maximum transmit power used by each antenna panel to determine the virtual PHR, and the expected transmit power corresponding to each antenna panel refers to the transmit power corresponding to each antenna panel determined by the terminal based on the power control parameters indicated by the base station. The process of determining the expected transmit power for each antenna panel in virtual PHR reporting can be found in [link to documentation]. Figure 4 The following explanation, using a terminal with two antenna panels as an example, describes the process of determining the maximum transmit power for each antenna panel in the terminal's virtual PHR reporting. Specifically, the maximum transmit power of the two antenna panels must meet the following conditions: Condition one: + <=TRPmax.

[0124] and These represent the maximum transmit power corresponding to the two antenna panels respectively; TRPmax represents the total transmit power limit specified in the protocol. Condition one stipulates that the maximum transmit power of the two antenna panels shall not exceed the total transmit power limit TRPmax specified in the protocol.

[0125] Condition two: + <=TRPmax.

[0126] and Antenna panel 1 and antenna panel 2 are respectively adopted and The actual radiated power. Under condition two, the sum of the actual radiated power of the two antenna panels shall not exceed the total transmit power limit TRPmax specified in the protocol.

[0127] Condition three: <=TRPmax.

[0128] Antenna panel 1 and antenna panel 2 are respectively adopted and The sum of the actual radiated power. This third condition is essentially the same constraint as the aforementioned second condition, except that their descriptions differ slightly.

[0129] Condition 4: EIRPmin- 1 <= Pumax1 <= EIRPmax; EIRPmin- 2 <= Pumax2 <= EIRPmax.

[0130] Pumax1 and Pumax2 indicate that the two antenna panels use... and In this case, the peak EIRP corresponding to the two antenna panels is as follows: EIRPmin represents the lower limit of the peak EIRP specified by the protocol. EIRPmax represents the upper limit of the peak EIRP specified by the protocol. 1 and The value 2 represents a value related to the antenna panel; these values ​​can be the same or different. For example, the values ​​can be determined separately based on the specifications of the two antenna panels. 1 and 2. In the virtual PHR reporting, the constraints of Pumax1 and Pumax2 are related to... Figure 4 The overall structure is approximate; the difference lies in further subtracting a value related to the antenna panel from the left side of the inequality (i.e., the lower limit of EIRPmin). The reason is that when a terminal uses two antenna panels to transmit simultaneously, the two antenna panels can only receive a portion of the power. Therefore, a data point needs to be subtracted from the lower limit; otherwise, the lower limit might be set too high, preventing the terminal from selecting the appropriate antenna. and .

[0131] Optionally, the inequality in condition four can be extended. For example, one or more values ​​can be added to or subtracted from the upper or lower limit of the inequality in condition four. For example, subtracting from the right side of the inequality in condition four... 1 and 2. Add a value related to power convergence to the left side of each of the conditions in condition four that are not equal. PIBE.

[0132] Optionally, in step 601 above, in addition to reporting indication information of multiple antenna panel PHRs to the base station, the terminal may also report other extended information to the base station, such as the difference between the corresponding PHRs of two antenna panels, without limitation. In this application, the PHRs of multiple antennas reported by the terminal to the base station are all real PHRs or all virtual PHRs. Generally, there is no situation where the PHRs of multiple antennas reported by the terminal include both real PHRs and virtual PHRs. Optionally, if the terminal reports multiple real PHRs of antenna panels to the base station in one report, then these multiple real PHRs are calculated based on the expected transmit power of two antenna panels in the same uplink transmission.

[0133] The format of the PHR reported by the terminal to the network device can include two Pcmax, each corresponding to one of the two antenna panels. Alternatively, it can include three Pcmax, where the first Pcmax represents the terminal's total maximum transmit power, and the remaining two Pcmax correspond to the two antenna panels respectively; or the first two Pcmax correspond to the two antenna panels respectively, and the last Pcmax represents the terminal's total maximum transmit power.

[0134] Step 602: The base station adjusts the scheduling policy for the terminal based on the PHR reported by the terminal. This step 602 is optional.

[0135] Similar to step 402 above. If the PHR reported by the terminal is positive, it indicates that the terminal still has power margin. In this case, the base station can allocate more frequency domain resources to the terminal in the next scheduling, or increase the closed-loop power control adjustment value P. TPC This allows for the utilization of remaining power margins. Alternatively, if the PHR reported by the terminal is negative, it indicates that the expected transmit power calculated based on the current scheduling situation is greater than the terminal's maximum transmit power. In this case, the base station can allocate fewer frequency domain resources to the terminal in the next scheduling cycle, or lower the closed-loop power control adjustment value P. TPC wait.

[0136] Using the above method, a corresponding maximum transmit power can be determined for each antenna panel, and the PHR corresponding to each antenna panel can be calculated independently, so that the base station can optimize the scheduling or power control of each antenna panel.

[0137] like Figure 7 As shown, this application provides a process for a PHR reporting method, which can be used as... Figure 6 One implementation of the process shown. This process includes at least: Step 701: The base station configures power control parameters for the terminal.

[0138] See above Figure 5 As described in step 501, the base station can configure at least one set of power control parameters for the terminal via RRC signaling. These power control parameters are used to determine the desired transmit power of the antenna panels. Multiple antenna panels of the terminal can share one set of power control parameters, or different antenna panels of the terminal can correspond to different power control parameters.

[0139] Step 702: The terminal calculates the PHR corresponding to each antenna panel.

[0140] For example, the terminal determines the expected transmit power for each antenna panel based on the power control parameters configured by the base station. Optionally, for reporting a real PHR, the process of determining the expected transmit power for each antenna panel must consider not only the influence of the power control parameters but also the uplink transmission scheduling parameters configured by the base station. That is, in real PHR reporting, the terminal determines the expected transmit power for each antenna panel based on both the power control parameters and the uplink transmission scheduling parameters. In virtual PHR reporting, the terminal determines the expected transmit power for each antenna panel based on the power control parameters. For details, please refer to [link to documentation]. Figure 4 The terminal determines the PHR (Power Response Rate) for each antenna panel based on its maximum transmit power and desired transmit power. For example, the PHR for each antenna panel is equal to the difference between its maximum transmit power and desired transmit power. The terminal reports the PHR for each of the multiple antenna panels to the base station. For details on determining the maximum transmit power for each antenna panel, please refer to [link to documentation]. Figure 6 The explanation in the document.

[0141] Step 703: The terminal reports the PHR corresponding to each of the multiple antenna panels to the base station.

[0142] Optionally, in addition to reporting the PHR corresponding to each antenna panel to the base station, the terminal can also report other extended information to the base station, such as the difference in PHRs corresponding to different antenna panels. The PHRs of multiple antenna panels reported by the terminal to the base station can all be real PHRs or all be virtual PHRs. If the terminal reports real PHRs of multiple antenna panels to the base station, the real PHRs of these multiple antenna panels are determined based on the expected transmit power corresponding to each of the multiple antenna panels in the same uplink transmission. For example, the terminal can determine the expected transmit power corresponding to each of the multiple antenna panels based on the uplink transmission scheduling parameters corresponding to each of the multiple antenna panels in the same uplink transmission; and determine the PHR of each antenna panel based on the expected transmit power and the maximum transmit power of each of the multiple antenna panels in the same uplink transmission.

[0143] The above method expands the maximum transmit power of current terminals by defining the maximum transmit power for each antenna panel. The terminal determines the power margin for each antenna panel based on its maximum transmit power and the expected transmit power, and reports this power margin to the base station. Compared to a single design where the terminal determines the power margin based on its maximum transmit power and the expected transmit power of the antenna panels, this method improves the accuracy of the determined power margin.

[0144] It is understood that, in order to achieve the functions described above, the terminal and base station include corresponding hardware and / or software structures for performing each function. Those skilled in the art should readily recognize that, in conjunction with the units and method steps of the various examples described in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed through hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0145] Figure 8 and Figure 9 The diagram shows the possible structures of the devices provided in this application. These devices can realize the functions of the terminal in the above-described method, and therefore can also achieve the beneficial effects of the above-described method.

[0146] like Figure 8 As shown, the communication device 800 includes a processing unit 810 and a transceiver unit 820. The transceiver unit 820 may also be referred to as a communication unit or communication interface, etc. The communication device 800 is used to implement the above-mentioned... Figure 4 or Figure 6 The method shown illustrates the functionality of the terminal.

[0147] Optionally, the communication device 800 may further include a storage unit, which can be used to store instructions and / or data. The processing unit 810 can read the instructions and / or data in the storage unit so that the communication device 800 can perform the functions of the terminal in the aforementioned method embodiment.

[0148] The communication device 800 can be used to perform the method embodiments described above. Figure 4 or Figure 6 The actions performed by the terminal. The communication device 800 can be a terminal or a component (processor, chip, or other, etc.) configured in the terminal. The processing unit 810 is used to perform the processing-related operations of the terminal in the above method embodiment. The transceiver unit 820 is used to perform the transceiver-related operations of the terminal in the above method embodiment. Specifically, for example: When the communication device 800 is used to implement Figure 4 In the method shown, the terminal functions as follows: the transceiver unit 820 is used to send first indication information to the network device, the first indication information indicating a power margin; wherein, the power margin is a power margin determined based on the terminal's maximum transmit power and the expected transmit power corresponding to at least two antenna panels or transmit beams in the terminal. Optionally, the processing unit 810 is used to determine the aforementioned first indication information.

[0149] When the communication device 800 is used to implement Figure 6 In the method shown, the terminal's function is as follows: the transceiver unit 820 is used to send third indication information to the network device, the third indication information indicating the power margin corresponding to each of the multiple antenna panels or transmission beams in the terminal; wherein, the power margin corresponding to each antenna panel or transmission beam is determined based on the maximum transmission power corresponding to each antenna panel or transmission beam and the expected transmission power corresponding to each antenna panel or transmission beam. Optionally, the processing unit 810 is used to determine the aforementioned third indication information, etc.

[0150] Optionally, the transceiver unit 820 may include a sending unit and a receiving unit. The sending unit is used to perform the sending function of the terminal in the aforementioned method embodiments. The receiving unit can be used to perform the receiving function of the terminal in the aforementioned method embodiments. It should be noted that the communication device 800 is used to implement... Figure 4 or Figure 6 When considering the functions of a terminal in a network device, it may only include a sending unit, which is used to send first or third indication information to the network device, without including a receiving unit. Whether the communication device 800 specifically includes a sending unit and a receiving unit depends on whether the terminal includes sending and receiving functions.

[0151] For a more detailed description of the processing unit 810 and the transceiver unit 820, please refer to [link / reference needed]. Figure 4 or Figure 6 The relevant descriptions in the methods shown are directly obtained and will not be repeated here.

[0152] like Figure 9 As shown, the communication device 900 includes a processor 910 and an interface circuit 920. The processor 910 and the interface circuit 920 are coupled to each other. It is understood that the interface circuit 920 can be a transceiver, an input / output interface, or pins, etc. Optionally, the communication device 900 may also include a memory 930 for storing instructions executed by the processor 910, or storing input data required by the processor 910 to execute instructions, or storing data generated after the processor 910 executes instructions.

[0153] When the communication device 900 is used to achieve the above Figure 4 or Figure 6 In this method, the processor 910 is used to implement the functions of the processing unit 810, and the interface circuit 920 is used to implement the functions of the transceiver unit 820.

[0154] When the aforementioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives information from other modules (such as radio frequency modules or antennas) in the terminal, which is sent to the terminal by the base station; this received information can be considered as inputting information into the terminal chip. Alternatively, the terminal chip sends information to other modules (such as radio frequency modules or antennas) in the terminal, which is sent to the base station by the terminal; this sent information can be considered as outputting information from the terminal chip.

[0155] This application also provides a communication device 1000, which can be a terminal, a terminal processor, or a chip, etc. The communication device 1000 can perform the above-described... Figure 4 or Figure 6 The operations performed by the terminal in the method embodiment.

[0156] When communication device 1000 is a terminal Figure 10 A simplified schematic diagram of a terminal structure is shown. (For example...) Figure 10 As shown, the terminal includes a processor 1010, a memory 1020, and a transceiver 1030. The memory 1020 can store computational program code, and the transceiver 1030 includes a transmitter 1031, a receiver 1032, radio frequency circuitry (not shown in the figure), an antenna 1033, and input / output devices (not shown in the figure).

[0157] The processor 1010 is mainly used for processing communication protocols and data, controlling the terminal, executing software programs, and processing software program data. The memory 1020 is mainly used for storing software programs and data. The radio frequency (RF) circuit is mainly used for converting baseband signals to RF signals and processing RF signals. The antenna 1033 is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are mainly used for receiving user input data and outputting data to the user. It should be noted that some types of terminals may not have input / output devices.

[0158] When data needs to be sent, the processor 1010 performs baseband processing on the data to be sent and outputs a baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as an electromagnetic wave through the antenna. When data is sent to the terminal, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor 1010. The processor 1010 converts the baseband signal back into data and processes the data. For ease of explanation, Figure 10 Only one memory, processor, and transceiver are shown in the illustration. In actual terminal products, there may be one or more processors and one or more memories. Memory can also be called storage medium or storage device, etc. Memory can be set up independently of the processor or integrated with the processor; this application does not limit this.

[0159] In this application, the antenna and radio frequency circuit with transceiver function can be regarded as the transceiver unit of the terminal, and the processor with processing function can be regarded as the processing unit of the terminal.

[0160] The processor 1010 can also be called a processing unit, processing board, processing module, processing device, etc., and the transceiver 1030 can also be called a transceiver unit, transceiver, transceiver device, etc.

[0161] Optionally, the devices in transceiver 1030 used for receiving can be considered as receiving units, and the devices in transceiver 1030 used for transmitting can be considered as transmitting units. That is, transceiver 1030 includes a receiver and a transmitter. A transceiver may also be called a transceiver unit, transceiver circuit, etc. A receiver may also be called a receiver unit, receiving circuit, etc. A transmitter may also be called a transmitter, transmitting unit, or transmitting circuit, etc.

[0162] For example, in one implementation, transceiver 1030 is used to perform... Figure 4 Transceiver operations on the terminal side. For example, transceiver 1030 is used to perform... Figure 4In the illustrated embodiment, S401, first indication information is sent to the network device. Optionally, the processor 1010 is used to determine the first indication information, etc.

[0163] Alternatively, in one implementation, transceiver 1030 is used to perform... Figure 6 The embodiment shown illustrates the transmitting and receiving operations on the terminal side. For example, transceiver 1030 is used to perform... Figure 6 In the illustrated embodiment, S601 sends third indication information to the network device. Optionally, the processor 1010 is used to determine the third indication information, etc.

[0164] When the communication device 1000 is a chip, the chip includes a processor, a memory, and a transceiver. The transceiver can be an input / output circuit or a communication interface; the processor can be a processing module integrated on the chip, a microprocessor, or an integrated circuit. In the above method embodiments, the terminal's sending operation can be understood as the chip's output, and the terminal's receiving operation in the above method embodiments can be understood as the chip's input.

[0165] It is understood that the processor in this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0166] The memory in this application may be random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, portable hard disk, compact disc read-only memory (CD-ROM), or any other form of storage medium known in the art.

[0167] An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a base station or terminal. Of course, the processor and storage medium can also exist as discrete components in the base station or terminal.

[0168] The methods in this application can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, they can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in this application are performed, in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, core network equipment, operation administration and maintenance (OAM) equipment, or other programmable devices. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0169] In this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0170] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, or C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0171] It is understood that the various numerical designations used in this application are merely for descriptive convenience and are not intended to limit the scope of this application. The order of the process numbers does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A power headroom reporting method, characterized by, include: Send a third indication message to the network device, the third indication message being used to indicate the power margin corresponding to each of the multiple transmit beams in the terminal; The power margin for each transmit beam is determined based on the maximum transmit power and the expected transmit power for each transmit beam. The maximum transmit power corresponding to the plurality of transmit beams satisfies the following: The sum of the actual radiated power corresponding to the maximum transmit power of the plurality of transmit beams shall not exceed the second threshold value; And, the peak equivalent isotropic radiated power (EIRP) of the maximum transmit power corresponding to each of the plurality of transmit beams does not exceed the third threshold value and is not lower than the fourth threshold value; The third threshold value is the preset peak EIRP maximum value; the fourth threshold value is the preset peak EIRP minimum value plus a power convergence related amount, and then minus a power backoff related amount and a first offset, the first offset being the offset corresponding to the terminal using multiple transmission beams for simultaneous transmission.

2. The method of claim 1, wherein, The second threshold value is the preset maximum transmit power.

3. The method of claim 1 or 2, wherein, The power margins corresponding to the multiple transmission beams are all actual power margins. The maximum transmit power corresponding to each transmission beam refers to the maximum transmit power corresponding to each transmission beam in a single uplink transmission. The expected transmit power corresponding to each transmission beam refers to the transmit power corresponding to each transmission beam determined by the terminal based on the power control parameters and uplink transmission scheduling parameters indicated by the network device.

4. The method of claim 3, wherein, The actual power margin corresponding to each of the multiple transmit beams is determined by the power control parameters and uplink scheduling parameters corresponding to each of the multiple transmit beams in the same uplink transmission.

5. The method of claim 1 or 2, wherein, The power margins corresponding to the plurality of transmit beams are all virtual power margins. The maximum transmit power corresponding to each transmit beam refers to the maximum transmit power used by each transmit beam to determine the virtual power margin. The expected transmit power corresponding to each transmit beam refers to the transmit power corresponding to each transmit beam determined by the terminal according to the power control parameters indicated by the network device.

6. A communication method characterized by comprising: include: Receive third indication information from the terminal, the third indication information being used to indicate the power margin corresponding to the multiple transmission beams of the terminal respectively; The power margin for each transmission beam is determined based on the maximum transmission power and the desired transmission power for each transmission beam; the maximum transmission power for each of the plurality of transmission beams satisfies the following: The sum of the actual radiated power corresponding to the maximum transmit power of the plurality of transmit beams shall not exceed the second threshold value; And, the peak equivalent isotropic radiated power (EIRP) of the maximum transmit power corresponding to each of the plurality of transmit beams does not exceed the third threshold value and is not lower than the fourth threshold value; The third threshold value is a preset maximum peak EIRP value; the fourth threshold value is a preset minimum peak EIRP value plus a power convergence-related amount, and then minus a power backoff-related amount and a first offset, where the first offset is the offset corresponding to the terminal transmitting multiple beams simultaneously.

7. The method of claim 6, wherein, The second threshold value is the preset maximum transmit power.

8. The method of claim 6 or 7, wherein, The power margins corresponding to the multiple transmission beams are all actual power margins. The maximum transmit power corresponding to each transmission beam refers to the maximum transmit power corresponding to each transmission beam in a single uplink transmission. The expected transmit power corresponding to each transmission beam refers to the transmit power corresponding to each transmission beam determined by the terminal based on the power control parameters and uplink transmission scheduling parameters indicated by the network device.

9. The method of claim 8, wherein, The actual power margin corresponding to each of the multiple transmit beams is determined by the power control parameters and uplink scheduling parameters corresponding to each of the multiple transmit beams in the same uplink transmission.

10. The method as described in claim 6 or 7, characterized in that, The power margins corresponding to the multiple transmit beams are all virtual power margins. The maximum transmit power corresponding to each transmit beam refers to the maximum transmit power used by each transmit beam to determine the virtual power margin. The expected transmit power corresponding to each transmit beam refers to the transmit power corresponding to each transmit beam determined by the terminal according to the power control parameters indicated by the network device.

11. A communications device, characterized by It includes units for performing the method as described in any one of claims 1 to 5, or units for performing the method as described in any one of claims 6 to 10.

12. A communications device, characterized by Includes a processor and a memory, wherein the processor is coupled to the memory; The memory is used to store computer programs or instructions; when the computer program or instructions are executed by the processor, the communication device performs the method as described in any one of claims 1 to 5, or the method as described in any one of claims 6 to 10.

13. A communications device, characterized by Includes a processor configured to cause the communication device to perform the method as claimed in any one of claims 1 to 5, or the method as claimed in any one of claims 6 to 10.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1 to 5, or the method as described in any one of claims 6 to 10.

15. A computer program product, characterised in that, The computer program product includes a computer program or instructions; when the computer program or instructions are run on a computer, the computer causes the computer to perform the method as described in any one of claims 1 to 5, or to perform the method as described in any one of claims 6 to 10.

Images