WO2020143761A1 - 功率控制方法、装置及电子装置 - Google Patents
功率控制方法、装置及电子装置 Download PDFInfo
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- WO2020143761A1 WO2020143761A1 PCT/CN2020/071398 CN2020071398W WO2020143761A1 WO 2020143761 A1 WO2020143761 A1 WO 2020143761A1 CN 2020071398 W CN2020071398 W CN 2020071398W WO 2020143761 A1 WO2020143761 A1 WO 2020143761A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/08—Closed loop power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/10—Open loop power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/365—Power headroom reporting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
- H04W52/325—Power control of control or pilot channels
Definitions
- the present disclosure relates to the field of communications, and in particular, to a power control method, device, and electronic device.
- the fifth generation mobile communication system needs to support different types of application scenarios, of which ultra-high speed is a critical requirement.
- the high frequency band can provide abundant broadband spectrum resources, and thus has become an important research direction for the new generation of mobile communications.
- high-band communication has the characteristics of fast attenuation and short communication distance.
- the beam is the main communication method in the high frequency band.
- the beam can transmit the signal in a relatively small angle range and play a role in gathering energy.
- the size of the antenna in the high frequency band is relatively small compared to the low frequency band, which is also the advantage that the high frequency band is easier to use a large-scale antenna to achieve a finer beam.
- the fifth-generation mobile communication system also supports working on traditional frequency bands.
- the traditional frequency band is called FR1 (Frequency Range 1), which refers to the frequency band of 6GHz and below;
- the high frequency band is called FR2 (Frequency Range 2 ) Refers to the frequency band above 24GHz. Regardless of whether it is a high frequency band or a low frequency band, wireless communication signals are carried by electromagnetic waves, so the limitation of electromagnetic radiation needs to be considered.
- FR1 user equipment User Equipment, UE
- UE User Equipment
- W/kg the absorption ratio
- FR2 is through the power density (Power Density, (Referred to as PD) or Maximum Permissible Exposure (referred to as MPE) to limit, the unit is W/m 2 , watts per square meter.
- PD Power Density
- MPE Maximum Permissible Exposure
- FR2 The testing and power control mechanisms related to electromagnetic radiation in the traditional frequency band FR1 are quite mature. However, high frequency band FR2 electromagnetic radiation related tests and power control mechanisms are still under study. The biggest difference between FR2 and FR1 is the beam-related characteristics. When sending a signal through a beam, whether it passes through the human body, especially in the near-field range of the transmitting end, the power limit is very different.
- Embodiments of the present invention provide a power control method, device, and electronic device to at least solve the problem of how to make full use of beam characteristics in FR2 in the related art to flexibly use power.
- a power control method including:
- a power control method including:
- a power control method comprising: receiving information related to maximum transmission power sent by a second communication node, wherein the information related to maximum transmission power is related to a beam or a beam group.
- a power control method including:
- a power control device including:
- An acquisition module used to determine one or more maximum transmission power related information
- the first sending module is configured to send the information related to the maximum transmission power to the first communication node, wherein the information related to the maximum transmission power is related to the beam or the beam group.
- a power control device including:
- the first determination module is used to determine the required power and the actual maximum transmission power of the uplink transmission
- a second determination module configured to determine the maximum transmission power related information according to the required power and the actual maximum transmission power
- the second sending module is configured to send the maximum transmission power related information to the first communication node.
- a power control device including:
- the first receiving module is configured to receive the maximum transmission power related information sent by the second communication node, wherein the maximum transmission power related information is related to the beam or the beam group.
- a power control device including:
- the second receiving module is configured to receive the maximum transmission power related information sent by the second communication node.
- a storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any one of the above method embodiments during runtime.
- an electronic device including a memory and a processor, the memory stores a computer program, the processor is configured to run the computer program to perform any of the above The steps in the method embodiment.
- one or more maximum transmission power related information is determined; the maximum transmission power related information is sent to the first communication node, wherein the maximum transmission power related information is related to beams or beam groupings, which can solve related technologies How to make full use of the beam characteristics in FR2 to flexibly use power.
- the first communication node can determine the transmission resources, thereby realizing the flexible use of power in FR2 .
- FIG. 1 is a block diagram of a hardware structure of a mobile terminal of a power control method according to an embodiment of the present invention
- FIG. 2 is a flowchart 1 of a power control method according to an embodiment of the present invention.
- FIG. 3 is a flowchart 2 of a power control method according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram 1 of uplink transmission through a beam according to an embodiment of the present invention.
- FIG. 5 is a second schematic diagram of uplink transmission through a beam according to an embodiment of the present invention.
- FIG. 6 is a block diagram 1 of a power control device according to an embodiment of the present invention.
- FIG. 7 is a second block diagram of a power control device according to an embodiment of the present invention.
- FIG. 1 is a block diagram of a hardware structure of a mobile terminal of a power control method according to an embodiment of the present invention. As shown in FIG.
- the mobile terminal 10 may include one or more (only A processor 102 (the processor 102 may include but is not limited to a microprocessor (Microprocessor Control Unit, MCU) or a programmable logic device (Field Programmable Gate Array, FPGA) and other processing devices) and a storage device for storing data
- the memory 104 optionally, the above mobile terminal may further include a transmission device 106 for communication functions and an input and output device 108.
- the structure shown in FIG. 1 is merely an illustration, which does not limit the structure of the mobile terminal described above.
- the mobile terminal 10 may further include more or fewer components than those shown in FIG. 1, or have a different configuration from that shown in FIG.
- the memory 104 may be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the power control method in the embodiment of the present invention, and the processor 102 executes each program by running the computer program stored in the memory 104 A variety of functional applications and data processing, namely to achieve the above method.
- the memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.
- the memory 104 may further include memories remotely provided with respect to the processor 102, and these remote memories may be connected to the mobile terminal 10 through a network. Examples of the above network include but are not limited to the Internet, intranet, local area network, mobile communication network, and combinations thereof.
- the transmission device 106 is used to receive or send data via a network.
- the specific example of the network described above may include a wireless network provided by a communication provider of the mobile terminal 10.
- the transmission device 106 includes a network adapter (Network Interface CoTtroller, referred to as NIC for short), which can be connected to other network devices through a base station to communicate with the Internet.
- the transmission device 106 may be a radio frequency (Radio FrequeNcy, RF for short) module, which is used to communicate with the Internet in a wireless manner.
- Radio FrequeNcy Radio FrequeNcy, RF for short
- FIG. 2 is a flowchart 1 of a power method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
- Step S202 Determine one or more pieces of maximum transmission power related information.
- Step S204 Send the maximum transmission power-related information to the first communication node, where the maximum transmission power-related information is related to a beam or a beam group.
- one or more maximum transmission power related information is determined; the maximum transmission power related information is sent to the first communication node, wherein the maximum transmission power related information is related to a beam or a beam group, and may Solve the problem of how to make full use of the beam characteristics and flexible use of power in FR2 in the related art.
- the first communication node can determine the transmission resources, thereby making full use of the beam in FR2 Features flexible use of power.
- the information related to the maximum transmission power includes at least one of the following:
- Power management maximum power reduction (Power Management Maximum Power Reduction, P-MPR) information the P-MPR information includes one of the following: the actual value of the P-MPR, the indication value of whether the value of the P-MPR exceeds a predetermined threshold 1. Indication information that the value of P-MPR is within a predetermined value interval;
- the actual maximum transmission power information includes one of the following: the value of the actual maximum transmission power, the indication information of whether the value of the actual maximum transmission power exceeds a predetermined threshold, and the value of the actual maximum transmission power is within the predetermined Instructions for the value range of
- Power headroom (PHR) information the PHR information includes one of the following: the actual value of the PHR, the indication information of whether the value of the PHR exceeds a predetermined threshold, and the indication information of the value of the PHR within a predetermined value interval .
- the maximum transmission power related information is determined according to at least one of the following:
- Transmission parameters refer to the relevant parameters of the uplink transmission sent by the UE.
- Transmission includes one of the following: PUSCH transmission, PUCCH transmission, and Sounding Reference Signal (SRS) transmission.
- Transmission parameters include transmission resources, such as time domain, frequency domain, space domain, code domain, beam and other parameters, as well as encoding-related parameters, such as modulation and coding method, transmission rate, multi-antenna transmission-related parameters, etc. Including power control parameters.
- the transmission parameters can refer to the parameters configured by the base station in the downlink control information (Downlink Control Information, DCI) to the UE and the high-level radio resource control (Radio Resource Control, RRC) information configuration.
- DCI Downlink Control Information
- RRC Radio Resource Control
- the P-MPR information of the beam or beam group corresponding to the maximum transmission power related information is the P-MPR information of the beam or beam group corresponding to the maximum transmission power related information.
- the information about the maximum transmission power is based on real transmission, it is determined that the one or more information about the maximum transmission power includes at least one of the following:
- the maximum transmission power related information is based on real transmission means that when calculating the maximum transmission power related information, there is real transmission in the cell to which the maximum transmission power related information belongs.
- the real transmission is an uplink transmission, which may be a PUSCH transmission scheduled by the base station using the UL grant information included in the DCI, or a PUSCH transmission configured by RRC signaling, or an RRC signaling configuration and DCI signaling
- the PUSCH transmission triggered by the combination may also refer to PUCCH transmission or SRS transmission.
- Determining the required power according to the actual transmission parameters and the beam or beam group corresponding to the maximum transmission power-related information refers to: replacing the beam-related parameters in the real transmission parameters with the beam or beam group corresponding to the maximum transmission power-related information, according to the part
- the parameters of the actual transmission after replacement determine the required power.
- the resource indicator SRI is associated with the power control parameter. Assuming that SRI1 and SRI2 constitute an uplink candidate beam set, both SRI1 and SRI2 correspond to a set of power control parameters. Assume that the beam-related information of the maximum transmission power-related information corresponds to SRI1 and SRI2, respectively.
- the base station will enable the UE to obtain the SRI related to the transmission in various ways.
- the UE determines the transmission resource according to the SRI, for example, SRI1, then the UE uses the spatial relationship or transmission filter when transmitting the SRS corresponding to the SRI1.
- Parameters are sent PUSCH.
- the required power can be calculated using all the parameters of the real PUSCH transmission described above.
- the above-mentioned partial parameters of the real PUSCH transmission can be used to calculate the required power, that is, the parameters of the non-beam related real transmission; and the beam related parameters should be replaced from SRI1 to SRI2 That is, the UE obtains another set of power control parameters through SRI2 for calculating the maximum transmit power related information corresponding to the SRI.
- the above set of power control parameters includes at least one of the following: open loop power control parameters, closed loop power control parameters, and road loss power control parameters.
- the open-loop power control parameters include the target received power P0 and/or the path loss compensation factor alpha; the closed-loop power control parameters are used to indicate at least the closed-loop power control number; the path loss power control parameters are used to determine the reference signal for measuring the road loss (Reference signal, RS) resource.
- the reference signal for measuring the road loss (Reference signal, RS) resource.
- the information about the maximum transmission power based on virtual transmission is similar to the information about the maximum transmission power based on real transmission.
- the beam-related parameters are determined using the beam or beam group corresponding to the corresponding maximum transmit power related information, and then the power control of each beam or beam group corresponding to the maximum transmit power related information is obtained according to the beam related information, such as SRI or spatial relationship parameter. Furthermore, the required power of each beam or beam group corresponding to the maximum transmission power related information is obtained.
- the information about the maximum transmission power is based on virtual transmission, it is determined that the one or more information about the maximum transmission power includes at least one of the following:
- the fact that the maximum transmission power related information is based on virtual transmission means that when calculating the maximum transmission power related information, there is no real transmission in the cell to which the maximum transmission power related information belongs.
- Virtual transmission is also called reference transmission. That is, when there is no real transmission, it is also assumed that there is a virtual transmission to calculate the required power. That is, in the power control parameter formula, the data rate related items and resource block allocation related items are all 0.
- the P-MPR information cannot be assumed to be 0 when calculating the true maximum transmission power, but the P-MPR value of the beam corresponding to the calculation of the maximum transmission power related information should be taken.
- the maximum transmission power related information is related to all or part of beams or beam groups in a predetermined beam set.
- the predetermined beam set includes one of the following:
- the purpose is SRS resources in the SRS resource set for codebook-based transmission
- the purpose is SRS resources in the SRS resource set based on non-codebook transmission
- the SRS resource in the SRS resource set used for beam management is the SRS resource set used for beam management
- part of the beams or beam groups in the predetermined beam set includes at least one of the following:
- the information related to the maximum transmission power and beam correlation includes one of the following:
- Each maximum transmit power related information corresponds to a transmit beam
- Each maximum transmission power related information corresponds to the difference between the maximum transmission power related information of the reference transmission beam and the maximum transmission power related information of other transmission beams;
- One piece of maximum transmission power-related information corresponds to the reference transmission beam, and the remaining maximum transmission power-related information is the difference between the reference transmission beam's maximum transmission power-related information and the other transmission beam's maximum transmission power-related information.
- one or more pieces of the maximum transmission power related information are determined:
- the difference in the maximum transmission power related information between beams or beam groups in the predetermined beam set is greater than a third predetermined threshold
- the amount of change in the maximum transmission power-related information of the beam or beam group in the predetermined beam set exceeds a fourth predetermined threshold
- the value of the maximum transmission power-related information determined by the currently transmitted parameter exceeds a fifth predetermined threshold
- the amount of change in the maximum transmission power-related information determined by the currently transmitted parameter exceeds a sixth predetermined threshold.
- sending the information related to the maximum transmission power to the first communication node includes:
- the maximum transmission power related information is carried in PHR information, and the PHR information refers to the PHR in a media access control (Media Access Control, MAC for short) control element (CE), or carried in a CSI report.
- PHR information refers to the PHR in a media access control (Media Access Control, MAC for short) control element (CE), or carried in a CSI report.
- CE Media Access Control
- the beam includes one of the following: spatial relationship, reference signal resource, synchronization signal resource, antenna port, antenna panel, filter, and quasi-co-location information.
- FIG. 3 is a flowchart 2 of a power control method according to an embodiment of the present invention, as shown in FIG. 3 , The process includes the following steps:
- Step S302 Determine the required power and the actual maximum transmit power of the uplink transmission.
- Step S304 Determine the maximum transmission power related information according to the required power and the actual maximum transmission power.
- Step S306 Send the maximum transmission power related information to the first communication node.
- the required power and the actual maximum transmission power of the uplink transmission are determined; the information about the maximum transmission power is determined according to the required power and the actual maximum transmission power; and the information about the maximum transmission power is sent to
- the first communication node can solve the problem of how to make full use of the beam characteristics and flexible use of power in FR2 in the related art.
- the first communication node can determine the transmission resource, thereby achieving FR2 makes full use of beam characteristics to flexibly use power.
- the method further includes: adjusting uplink transmission power according to the required power and the actual maximum transmit power.
- adjusting the power of the uplink transmission according to the required power and the actual maximum transmit power includes:
- the power of the uplink transmission is adjusted by increasing the power level:
- the required power is higher than the actual maximum transmit power
- the current power level is not the highest power level
- the actual maximum transmit power is determined by the power management maximum power reduction P-MPR;
- the P-MPR for determining the actual maximum transmission power is higher than the sum of other maximum power reduction MPR terms for determining the actual maximum transmission power by a second preset value.
- the method further includes:
- the power level is increased as the maximum transmission power related information:
- the required power is higher than the actual maximum transmit power
- the current power level is not the highest power level
- the actual maximum transmit power is determined by the power management maximum power reduction P-MPR;
- the P-MPR for determining the actual maximum transmission power is higher than the sum of other maximum power reduction MPR terms for determining the actual maximum transmission power by a second preset value.
- the method further includes:
- the power level is reduced as the maximum transmission power related information:
- the current power level is not the lowest power level
- the required power is lower than the actual maximum transmit power corresponding to a power level lower than the current power level
- the difference between the required power and the actual maximum transmit power corresponding to a power level lower than the current power level is greater than a third preset value.
- sending the information related to the maximum transmission power to the first communication node includes:
- Uplink control information (uplink control information, referred to as UCI) on a physical uplink control channel (Physical Uplink Control Channel, referred to as PUCCH) or a physical uplink shared channel ( Physical Link (Shared Channel, referred to as PUSCH) is sent to the first communication node.
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Link (Shared Channel
- the information related to the maximum transmission power includes one of the following:
- the method further includes at least one of the following:
- the duration ratio takes effect from the current transmission and continues for at least one predefined time period
- the duration ratio takes effect from the current transmission until the duration ratio is updated by the new duration ratio
- the second duration ratio becomes effective at least one predefined time after the effective time of the first duration ratio.
- An embodiment of the present invention also provides a power control method, which is applied to a first communication node and includes:
- the first communication node may determine the uplink transmission resource of the second communication node according to the maximum transmission power related information.
- the information related to the maximum transmission power includes at least one of the following:
- the maximum transmission power related information is related to all or part of beams or beam groups in a predetermined beam set.
- the predetermined beam set includes one of the following:
- the purpose is SRS resources in the SRS resource set for codebook-based transmission
- the purpose is SRS resources in the SRS resource set based on non-codebook transmission
- the SRS resource in the SRS resource set used for beam management is the SRS resource set used for beam management
- part of the beams or beam groups in the predetermined beam set includes at least one of the following:
- the information related to the maximum transmission power and beam correlation includes one of the following:
- Each maximum transmit power related information corresponds to a transmit beam
- Each maximum transmit power related information corresponds to the difference between the maximum transmit power related information of the reference transmit beam and the maximum transmit power related information of other transmit beams;
- One piece of maximum transmission power-related information corresponds to the reference transmission beam, and the remaining maximum transmission power-related information is the difference between the reference transmission beam's maximum transmission power-related information and the other transmission beam's maximum transmission power-related information.
- the embodiment of the invention also discloses a power control method, which is applied to the first communication node and includes:
- the first communication node may determine the uplink transmission resource of the second communication node according to the maximum transmission power related information.
- the information related to the maximum transmission power includes one of the following:
- An embodiment of the present invention provides a power control for a beam scenario, including: maximum transmit power increase: a UE can increase power transmission within a capability range when power is limited, and notify the base station that it has increased power through different information for subsequent The scheduling of meets the constraint condition of the proportion of uplink duration.
- the UE informs the base station that it transmits beam-related P-MPR information, so that the base station can estimate the true maximum allowable power of each beam, and try to avoid selecting a beam with a large P-MPR (beam toward the human body) when the channel conditions are similar. Upstream transmission.
- the second communication node (UE) sends to the first communication node (base station) at least one of the following: maximum transmission power information, duration ratio information, and MPR related information;
- the first communication node determines transmission resources for the second communication node based on at least one of the above information.
- the maximum transmission power information includes one of the following: the maximum transmission power level, and the indication that the maximum transmission power variation exceeds the threshold.
- the maximum transmission power level is used to indicate different maximum transmission powers.
- the UE supports multiple power classes (power classes), and different power classes correspond to different maximum transmit power classes.
- the maximum transmission power variation refers to the actual maximum transmission power variation, that is, the true maximum transmission power value of MPR, A-MPR, and P-MPR is considered. Changes beyond the threshold include two types: large and small.
- the duration ratio information is used to determine the maximum duration that the transmission can occupy within a predefined time period.
- the duration ratio information refers to the ratio of the transmission occupancy time within a predetermined period to the length of the predetermined period.
- the time duty cycle corresponding to the lowest maximum transmit power level is 100%, and it can also be said that there is no constraint on the space duty cycle.
- MPR-related information includes one of the following: P-MPR value, P-MPR value exceeding threshold indication, P-MPR value level indication, MPE information.
- MPR related information is associated with at least one of the following: beam resources (group), spatial relationships (group), reference signal resources (group).
- the association includes: each beam resource (group), spatial relationship (group), and reference signal resource (group) corresponding to one MPR related information.
- the feedback information of the downlink beam management only includes MPR related information.
- the MPE difference of several beams needs to be reported only if it is greater than a predetermined threshold.
- Maximum transmit power information, duration ratio information, and MPR related information are carried in the CSI report, and may also be carried in the PHR report.
- the maximum transmission power information and duration ratio information are mainly reported when there is a change in power level/duty ratio.
- the MPR related information value of the beam in the uplink candidate beam set exceeds the threshold (first time);
- the value of the MPR related information of the beam in the uplink candidate beam set exceeds the threshold (update) relative to the change value reported last time;
- the power is close to PCMAX .
- the maximum transmit power level is increased.
- the maximum transmit power level is increased, and ping-pong switching can be avoided.
- the maximum transmit power level is increased, so that the required power is lower than the real maximum transmit power corresponding to the increased maximum transmit power level, and the maximum transmit power level is increased by one or more levels.
- the maximum transmission power level is increased.
- the maximum transmission power level is reduced.
- the channel conditions are better, the PL is smaller, or the beam is changed, and the P-MPR is smaller.
- the final performance is that the required power is less than the maximum transmit power of the lower level, then the power of the lower level can be used. Of the duty cycle.
- the maximum transmission power level is reduced
- the maximum transmit power level is reduced to that level
- P-MPR When the required power of the transmission is higher than the current true maximum transmit power, and the true maximum transmit power of the current transmission is determined by the P-MPR, the maximum transmit power level is increased.
- P-MPR has a larger value than other MPRs and plays a decisive role. And think that only the power shortage caused by the P-MPR factor can increase the maximum power level.
- the maximum transmission power level is increased.
- the maximum is increased Transmit power level.
- the transmission maximum transmission power information refers to transmission of a new (raised/decreased) maximum transmission power level, and/or transmission of duration information corresponding to the new maximum transmission power level.
- the transmission resources include at least one of the following: the proportion of the transmission duration and the spatial relationship.
- the first communication node determines that the time domain ratio of the transmission of the second communication node is not greater than the time ratio.
- the UE can flexibly process the current transmission power within the capability range, and inform the base station of relevant information, so that the proportion of subsequent uplink transmission is restricted, and the electromagnetic wave use requirements are met. Under suitable conditions, the UE may notify the base station to relax/cancel the restriction on the proportion of uplink transmission. In addition, by reporting the beam-related P-MPR, the UE enables the base station to predict the maximum transmit power of the beam, thereby avoiding scheduling the beam transmission in the human body direction for uplink transmission as much as possible.
- Determining the transmission power includes two parts: determining the required power for the transmission; taking a smaller value between the required power and the maximum allowable power as the actual transmission power.
- the determined transmission required power refers to the power obtained by using various power control related parameters of the transmission.
- the parameters related to power control include at least one of the following: open-loop power control parameters, closed-loop power control parameters, and path loss (PL, PathLoss, referred to as path loss) parameters.
- the open-loop power control parameters include at least one of the following: target received power and path loss factor.
- the power control-related parameters may also include bandwidth-related power adjustments and rate-related power adjustments.
- the maximum allowable power refers to the upper limit of the transmission power of a transmission, also known as the true maximum transmission power, or the actual maximum transmission power, which is recorded as P CMAX .
- the maximum allowable power is usually determined based on UE capabilities, base station deployment, frequency band information, and other factors.
- the UE When determining the maximum transmission power P CMAX , the UE first needs to determine an upper limit and a lower limit.
- the values between the upper and lower limits are legal, as follows:
- P CMAX_L,c MIN ⁇ P EMAX,c - ⁇ T C,c ,(P PowerClass - ⁇ P PowerClass ) -MAX (MPR c +A-MPR c + ⁇ T IB,c + ⁇ T C,c + ⁇ T ProSe ,P- MPR c ) ⁇
- P CMAX_H,c MIN ⁇ P EMAX,c ,P PowerClass - ⁇ P PowerClass ⁇
- the subscript c indicates that the parameter is cell-specific, indicating cell c.
- P EMAX,c is the maximum transmission power configured by the network side and is related to the network deployment strategy.
- P PowerClass is the maximum transmission power without considering the power deviation tolerance (hereinafter referred to as tolerance). Different power classes correspond to different values. In Power class 3, this parameter is 23dBm. In Power class 2, the parameter is 26dBm.
- ⁇ P PowerClass is the power class 2 UE in the upstream and downstream ratio configuration is 0 or 6, that is, when the upstream occupation time is more P PowerClass is further reduced, the value is 3dB, for other upstream and downstream ratio values are 0dB .
- the MPR (Maximum Power Reduction) parameter is to consider high-order modulation and coding strategies (Modulation and Coding Scheme, MCS) and transmission bandwidth resource block (Resource, Block, RB) factors.
- MCS Modulation and Coding Scheme
- RB transmission bandwidth resource block
- the additional maximum power reduction (Additional MPR, A-MPR) parameter is to consider the requirements of additional specific deployment scenarios. That is, different deployment scenarios or different countries have different requirements for RF transmission. Most scenes have values ranging from 1 to 5dB, and some scenes have values up to 17dB.
- T IB,c is an additional tolerance set for some cells c, and the value is 0 dB or 0 to 0.9 dB depending on the configuration.
- T C,c are set for the upper and lower sidebands, and the value can be 1.5dB or 0dB.
- T ProSe is set considering the direct communication scenario between users, and the value is 0.1 dB or 0 dB.
- P-MPR c is the maximum power reduction of power management, which is the maximum transmission power reduction set in consideration of electromagnetic energy absorption and interference reduction among multiple systems.
- the embodiments of the present invention refer to MPR, A-MPR, and ⁇ T IB,c , ⁇ T C,c , and ⁇ T ProSe as other maximum power reductions.
- the sum of other maximum power reductions and the greater of P-MPR determines the value of P CMAX_L,c .
- the maximum transmission power of FR1's power class 3 (power class 3) is 23dBm, and the factor of electromagnetic absorption ratio (Specific Absorption) is reflected by P-MPR, that is, the UE sets the appropriate P-MPR according to various restrictions.
- the real The transmission power does not exceed 23dBm minus the value of P-MPR.
- the maximum transmit power of power level 2 of FR1 is 26dBm, but the maximum transmit power limit of 26dBm can be used only when the duty cycle of upstream transmission is relatively low. If the duty cycle (Duty Cycle) of upstream transmission is relatively high, the maximum Only the maximum transmit power limit of 23dBm can be used.
- the beam is the main communication method, and whether the transmission beam faces the human body and the distance from the human body will have a very different effect on the P-MPR.
- Relevant tests have shown that using beams towards the human body to send uplink signals, the P-MPR may reach more than 10dB. Therefore, since the beam may be dynamically switched in FR2, the P-MPR also needs to adapt to the dynamic switching of the beam.
- Embodiments of the present invention provide an enhanced power control method so that power can be efficiently used in a dynamic beam switching scenario.
- the UE sets an appropriate P-MPR of the currently used beam according to the beam MPE.
- the beam-related MPE may be statically set. For example, the antenna design of the UE determines the direction of its beam and the screen. Assuming that in most scenes, the screen faces the human body, then the relationship between the beam direction of the UE and the vertical direction of the screen can determine the beam-related MPE.
- the beam-related MPE can be obtained according to the measurement result.
- the UE uses special detection means, such as an infrared device, to detect whether there is a human body in a beam direction, and the parameters such as the distance of the human body, thereby evaluating the MPE of the beam direction.
- the UE can at least obtain the MPE information of the beam to be transmitted.
- the UE can obtain the MPE information of any possible transmitted beam.
- the UE can obtain the MPE information of each beam in the candidate set of uplink transmission beams.
- the beams in the embodiments of the present invention may also be spatial relationships, reference signal resources, synchronization signal resources, antenna panels (panels), filters, or quasi-co-location information.
- the beam can be described with reference signal resources, synchronization signal resources, and so on.
- reference signal resources For example, channel state information reference signal (Channel State Information, Signal, CSI-RS) resource indication information, sounding reference signal (Sounding Reference, Signal, SRS) resource indication information, and synchronization signal block (Synchronization Signal Block, SSB) indication information.
- channel state information reference signal Channel State Information, Signal, CSI-RS
- sounding reference signal Sounding reference signal
- Sounding Reference, Signal, SRS Sounding reference signal
- SSB Synchrom Signal Block
- the beams in this disclosure can be extended to beam groups, and each beam can be replaced by a beam group.
- the beam group may include multiple reference signal resources or synchronization signal resources.
- MPE may also be replaced by PD.
- MPE MPE
- P-MPR P-MPR
- FIG. 4 is a schematic diagram 1 of uplink transmission through beams according to an embodiment of the present invention.
- the UE has multiple beam directions marked as beam 0 to beam 7 respectively.
- Beam 0 is a beam that is directly facing the human body.
- the beam directions of beam 1 and beam 7 will also pass through the human body when sending signals, but due to a certain inclination, the influence of electromagnetic radiation is not as great as that of beam 0. If the effect of electromagnetic radiation on the human body is not considered, then all beams are limited to the same maximum transmission power.
- These power reductions include MPR, A-MPR, tolerance, etc.
- the value of P-MPR may vary greatly.
- the P-MPR value of some beam directions is likely to exceed the sum of other MPRs and tolerances, and becomes the main factor that determines the true maximum transmit power.
- beam 0 has a large P-MPR, so the maximum transmission power is lower than that of beam 3.
- the base station in order to measure the uplink channel, the base station usually causes the UE to send an uplink reference signal, called SRS (Sounding Reference Signal).
- SRS-related configuration is implemented at two levels: SRS resource set (SRS resource) and SRS resource (SRS resource).
- SRS resource can usually represent a beam.
- SRS resource can also represent multiple beams transmitted simultaneously, but these multiple beams transmitted using one SRS resource are regarded as one beam group, or one logical beam, or one virtual port.
- the mapping of virtual ports to actual physical antennas depends on the UE's implementation.
- An SRS resource set includes at least one SRS resource. Beam scanning must send all SRS resources in at least one SRS resource set. During the uplink beam scanning process, all SRS resources in an SRS resource set preferably use the same transmission power, which is convenient for comparison at the receiving end. Therefore, the power control parameters are configured based on the SRS resource set, and are applicable to all SRS resources in the SRS resource set. To ensure that the power control parameters of multiple SRS resources in the SRS resource set are consistent, the PL used when the first SRS resource in an SRS resource set sends an SRS is used to send SRS on all SRS resources in the SRS resource set Calculate power. This can ensure that the required power of multiple SRS resources is the same.
- the actual transmission power of the uplink transmission is related to both the required power and the true maximum transmission power.
- the P-MPR is too large, resulting in a small true maximum transmit power, and SRS transmission in these beam directions is more likely to be power limited.
- FIG. 5 is a second schematic diagram of uplink transmission through beams according to an embodiment of the present invention.
- the beams 0 to 7 of the UE are used for uplink beam scanning, and the required power of SRS transmission sent on different beams is the same.
- the required power is relatively low, all beams will not be power limited, as shown in Fig. 5 PREQ_0.
- the required power is high, the actual maximum transmit power of the beam with a large P-MPR is relatively low, so it is relatively easy to be power limited, as shown in Fig. 5 PREQ_1 and PREQ_2.
- the actual maximum transmission power may be different and the actual transmission power may be different.
- One way is to allow SRSs occupying different SRS resources in an SRS resource set to be transmitted at different transmission powers.
- the base station uses an SRS resource indicator (SRS Resource Indicator, SRI) to notify the UE of the transmitted beam information when scheduling the uplink transmission of the PUSCH. That is, the UE uses the same transmission filter when sending the SRS transmission indicated by the SRI to send the PUSCH transmission. Then, the uplink transmission corresponding to the SRS resource that is prone to power limitation is also prone to power limitation.
- SRS Resource Indicator SRI
- this difference in transmission power does not necessarily occur, and will only occur when the required transmission power of the SRS exceeds the true maximum transmission power. That is to say, the UE determines the power for each SRS transmission. Different SRSs may result in different actual transmission powers due to different P-MPRs of the beams; or because the required power is low and there is no SRS transmission power limitation of the beams.
- the UE may not provide the P-MPR of the beam of the beam set to the base station. That is, in the SRS scanned by the uplink beam, if there is P-MPR that causes power limitation, it is not necessary to report the beam-related P-MPR. Because the uplink beam scanning already reflects the power difference at the sending end, it is reasonable for the receiving end to measure based on the different power.
- the UE When power limitation does not occur, the UE needs to provide the P-MPR of the beam in the beam set to the base station.
- the P-MPR difference between beams needs to be reported only when the difference between the beams is greater than a predetermined threshold.
- the SRS transmission of multiple beams does not show a significant power difference, which still affects the judgment of the receiving end. Therefore, among the several SRSs scanned by the uplink beam, if power is limited and exceeds a predetermined threshold, the beam-related P-MPR is not reported.
- Another way is to ensure that SRSs occupying different SRS resources in an SRS resource set are transmitted at the same transmission power. That is, when the transmission powers of multiple SRS resources are different, one of the following methods is used to achieve this goal:
- Method 1 The transmission power of all SRS resources is consistent with the SRS resource with the lowest transmission power. Alternatively, the transmission power of all SRS resources is determined using the smallest true maximum transmission power in the SRS resource set.
- Method 2 The transmission power of all SRS resources is consistent with the SRS resource with the highest transmission power. Alternatively, the transmission power of all SRS resources is determined by the maximum true maximum transmission power in the SRS resource set. In this way, due to the different P-MPR of each beam, some SRS resources may exceed the limit of the true maximum transmission power, referred to as power overrun.
- Method 3 The transmission power of all SRS resources is consistent with the transmission power of the first SRS resource in the SRS resource set. Or, the transmission power of all SRS resources is determined by the true maximum transmission power of the first SRS resource in the SRS resource set. In this way, there may also be SRS power overruns on some beam resources.
- Method 4 The transmission power of all SRS resources is consistent with the SRS resource whose transmission power is in the middle. Or, the transmission power of all SRS resources is determined by the true maximum transmission power in the middle of the SRS resource set. In this way, there may also be SRS power overruns on some beam resources.
- the UE In the case of power overrun, the UE needs to determine whether using a higher maximum transmission power level can meet the required power. In the case of UE capability support, the UE can use a higher maximum transmission power level. It should be noted that even if a higher maximum transmission power level is used, the actual maximum transmission power level may still not meet the required power after subtracting some beam P-MPR, then the actual transmission power is still higher than the original, but the power Restricted. That is to say, in the above method 2, method 3, and method 4, there may be a possibility that different SRS resources in an SRS resource set cannot be transmitted at exactly the same power.
- the base station needs to be notified of the updated maximum transmission power level, and the base station determines the subsequent uplink transmission according to the duty cycle of the uplink transmission corresponding to the updated maximum transmission power level.
- the base station controlling the duty cycle of subsequent uplink transmission may also affect the time-domain density of the SRS scanned by the beam.
- the above power overrun is mainly due to the larger P-MPR, resulting in a lower true maximum transmit power.
- the power may be limited because the UE is at the edge of the cell, and the maximum transmission power may also be increased, that is, transmitted in a power overrun mode, as long as the duty cycle of uplink transmission is limited.
- the UE After the uplink beam training, the UE reports the P-MPR of the uplink transmit beam to the base station, which helps the base station to select a beam set for forming a candidate beam for uplink transmission.
- the uplink beam management process may require the UE to inform the base station of beam-related MPR information.
- the uplink alternative beam set refers to beams corresponding to all SRS resources in the SRS resource set whose codebook usage is set to codebook-based or non-codebook-based SRS resource sets.
- the UE informs the base station of beam-related MPR information:
- the difference in MPR information corresponding to SRS resources belonging to the same SRS resource set is greater than the threshold
- SRS transmission of SRS resources belonging to the same SRS resource set has no power limitation
- SRS transmission of SRS resources belonging to the same SRS resource set has power limitation, and the amount of power limitation is less than the threshold
- the UE when the above-mentioned relevant conditions are met, the UE needs to inform the base station of the beam-related MPR information, and then the UE needs to implement monitoring of the uplink candidate beam set. Once the MPR information is found to exceed the threshold, the base station change is reported The MPR information related to the beam exceeding the threshold, or reporting the MPR information of all SRS resources in the SRS resource set.
- Beam-related MPR information and/or power overrun information is sent to the base station in at least one of the following ways:
- the UE carries MPR related information and/or the updated maximum transmit power level in the CSI report;
- the MHR related information and/or the updated maximum transmission power level are carried in the PHR information.
- the optimal receiving beam of the UE in the downlink direction may pass through the human body. If the reciprocity of uplink and downlink is simply considered, using the optimal downlink receive beam as the uplink transmit beam, the transmit power of the uplink transmission is greatly restricted due to its large P-MPR.
- the scheduling will consider this factor and select the most appropriate beam, and may try to avoid the beam toward the human body.
- the UE it is necessary for the UE to inform the base station about MPR related information.
- the UE After downlink beam scanning, the UE selects the best links to report, corresponding to several beams (groups). The UE also reports the MPR related information of each beam (group). Or, the UE reports an overall indication of whether the MPR correlation of the beam exceeds the threshold for multiple beams.
- the feedback information of the downlink beam includes MPR related information.
- Reciprocity includes at least one of the following: uplink and downlink reciprocity, and transceiver reciprocity.
- the reciprocity between uplink and downlink refers to that the beam selection result according to the downlink measurement is consistent with the beam selection result measured in the uplink direction. That is, the uplink and downlink beam selection results can be borrowed from each other, and only one direction, for example, uplink beam selection, and the other direction, for example, downlink beam selection, can be used to borrow the uplink beam selection results.
- Receiving and receiving reciprocity refers to a party that communicates, for example, the best receiving beam trained in the downlink direction can be used for the transmit beam in the upstream direction. Similarly, the best sending beam in the uplink direction can be used as the receive beam in the downstream direction.
- the UE After downlink beam training, the UE reports the P-MPR of the reported beam to the base station together, which helps the base station to select a beam to form an alternative beam for uplink transmission.
- the UE When the UE reports the downlink beam training result, it carries the MPR information related to all the beams reported;
- the MPR information related to the beam greater than the threshold is reported;
- the MPR information related to each beam is reported.
- the MPR information related to the beam may be a P-MPR value or a pre-defined level.
- P-MPR is divided into 3 levels, as shown in Table 1.
- the UE carries beam-related MPR information in the CSI report.
- the base station selects a suitable beam or spatial relationship for the UE for uplink transmission. For example, after downlink beam scanning, the UE sends the results of the downlink scan to the base station. When there is uplink and downlink reciprocity between the beams of the UE, the base station can select a suitable downlink receive beam for the UE to send uplink transmission; or the base station configures resources to the UE For uplink beam management (scanning), the base station selects an appropriate uplink transmit beam according to the measurement result for the UE to transmit uplink transmission.
- Scenario 1 Allow the UE to increase the maximum transmit power level, thereby increasing the true maximum transmit power, and attach a limit to the uplink duty cycle.
- the UE needs to inform the base station that it has increased the maximum transmission power, so that the base station uses the uplink duty cycle limit that matches the increased maximum transmission power in the subsequent scheduling process.
- the UE notifies the base station in the following ways:
- Method 1 The UE informs the base station of the maximum transmission power information.
- Manner 2 The UE informs the base station about the time duration information corresponding to the increased or decreased maximum transmission power.
- the UE may increase by at least one level.
- the UE supports a maximum transmission power level 0 of 23 dBm, and also supports a maximum transmission power level 1 of 26 dBm.
- the maximum transmit power level is 0. If the P-MPR is 10dB and other MPR and other factors are 3dB, the true maximum transmit power is limited to 13dBm.
- the maximum transmit power level of 0 can be met. If the required power of the UE is 16 dBm, the UE needs to be upgraded to the maximum transmit power level of 1, and the true maximum transmit power limit is increased by 3 dB to 16 dBm. In this way, the power demand of the UE can just be met. If the required power of the UE is 18 dBm, even if the UE is upgraded to the maximum transmission power level 1, the transmission of the UE is still power limited.
- the UE supports a maximum transmission power level 0 of 23 dBm, a maximum transmission power level 1 of 26 dBm, and a maximum transmission power level 2 of 29 dBm.
- the maximum transmit power level is 0. If the P-MPR is 10dB and other MPR and other factors are 3dB, the true maximum transmit power is limited to 13dBm. If the required power of the UE is 18 dBm, the true maximum transmit power limit when the UE raises the maximum transmit power level by one level is 16 dBm, which cannot be met. Therefore, the UE can be increased to the maximum transmission power level 2, and at this time, the transmission power of the UE is not limited.
- the uplink duty cycle corresponding to the maximum transmission power level 0 is 100%, that is, the ratio of uplink in the time domain can be unlimited;
- the uplink duty cycle corresponding to the maximum transmission power level 1 is 50%, that is, the uplink is in the time domain The proportion of the uplink cannot exceed 50%;
- the uplink duty cycle corresponding to the maximum transmit power level 2 is 20%, that is, the proportion of the uplink in the time domain cannot exceed 20%.
- the UE finds that the required power of the current transmission is lower than the current true maximum transmit power limit or exceeds the predetermined threshold, it reduces the maximum transmit power level by one or more levels and finds the lowest maximum transmit that meets the power limit Power level. After reducing the maximum transmit power level, the corresponding upstream duty cycle is used.
- the maximum transmission power level back-off mechanism is suitable for better channel conditions, smaller PL, smaller MPE/P-MPR of the beam, etc. In short, the required power becomes smaller, and the lower maximum transmission power can be used.
- the UE needs to increase the maximum transmit power level, and accordingly the base station needs to be informed to limit the subsequent uplink duty cycle, or the power of the uplink transmission is not limited, and the UE can also reduce the maximum transmit power For the level, it is also necessary to inform the base station of the uplink duty cycle used for relaxation, or to cancel the uplink duty cycle limitation.
- the UE also needs to monitor the power parameters of the current transmission or the power parameters of the beam to be selected. When at least one of the following conditions is met, the P-MPR or PHR is reported to the base station:
- the change of the P-MPR of the alternative beam exceeds the threshold
- the UE carries the reported P-MPR or PHR information in the channel state information CSI report;
- the UE carries the reported P-MPR in the PHR report.
- the UE is allowed to increase the maximum transmission power, and the UE may not explicitly inform the base station. That is, if the base station schedules or allocates uplink transmission resources for the UE, but the UE finds that if the uplink transmission is sent, the uplink transmission time ratio will exceed the uplink duty cycle corresponding to the increased maximum transmission power, then the UE sends This upstream transmission.
- the UE After the UE reports the increase or decrease of the maximum transmission power to the base station, before receiving the response information from the base station, the UE controls the duty cycle of its uplink transmission not to exceed the limit.
- the maximum transmission power is low and the power is limited.
- the solution is to break the current maximum transmission power limit and raise it to a higher maximum transmission power level. If the UE supports this capability, the application scenario can also be extended to not be limited to the problem of power limitation due to large P-MPR. For example, power limitation due to other reasons, such as UE power limitation at the cell edge, can also use the above-mentioned way to increase the maximum transmission power.
- Scenario 2 The UE informs the base station of the P-MPR of each beam, and the base station can predict the difference between the beams. When the difference between the beams toward the human body and the beams toward the non-body is not too large, try to avoid scheduling beams toward the human body.
- the base station knows the P-MPR of the uplink beam in the candidate set, combining the value of PHR will be helpful for scheduling. Specifically, when the PL is relatively large and the PHR is close to 0, the ceiling of the uplink transmission beam with a large P-MPR will be obvious, and the beam with a small P-MPR will be better.
- the base station also needs to evaluate, without considering the transmission power peaking between the beams, that is, when the required power is met, the transmission power can be considered to be basically the same, and the performance difference such as the signal to interference noise ratio (Signal to Interference plus Noise Ratio, The size of the SINR) is different from the situation in which the power limit of different uplink transmit beams is different from the topping situation, and the expected SINR will be different.
- the signal to interference noise ratio Signal to Interference plus Noise Ratio
- the upper limit of the power of different beams may be very different. If the uplink beam scanning has been reflected, it is more accurate for scheduling. If the uplink beam scanning does not reflect this difference, and the actual transmission requires more power than the SRS, you may encounter a power bottleneck.
- two upstream beams transmit SRS, they do not encounter a power bottleneck, and they are sent at the same power, and the difference is not too big to the receiving end. It may be that the beam in the human body direction is slightly better and is selected, it is easy to be power limited.
- the scheduler can make a judgment in conjunction with the PHR.
- the weighting value of the beam in the human body direction should be set relatively small.
- the UE needs to inform the base station whether the real PHR is P-MPR.
- the base station knows that the P-MPR of other beams is smaller than the P-MPR of the current beam, it is possible to change the beam scheduling, or continue to use the current beam, but using the method of increasing power. If the P-MPRs of the other beams are similar, there is no need to change the beam scheduling, and only the current beam can continue to be used, and the maximum transmit power level is increased and the duty cycle constraint is increased.
- the base station has replaced the new beam scheduling.
- the UE determines whether the transmission on the new beam is power limited. If not, the UE further determines whether it can fall back to a lower maximum transmit power level. If it is still limited, the UE further determines whether it is necessary to further increase the maximum transmission power level or maintain the current maximum transmission power level.
- the UE needs to inform the base station of the updated maximum power level and/or the uplink duty cycle corresponding to the updated maximum power level.
- the uplink scheduling controlled by the base station meets the uplink duty ratio requirements before and after the update.
- the UE itself controls the actual uplink transmission to meet the upstream and downstream uplink duty ratio requirements.
- the above reported beam-level P-MPR is used as an example to illustrate that the base station needs to know the MPE or PD related to the beam of the UE.
- the P-MPR information may also be replaced by the following information: actual maximum transmission power information, PHR information.
- the P-MPR of the beam is greater than the threshold that reduces the uplink duty cycle, then it should be mainly aimed at the beam toward the human body, and the distance will affect the P-MPR. If you use a beam that is not facing the human body or is far away from the human body, it should not be affected. If the UE only informs the base station that the current transmission has been boosted, but does not inform the specific beam-related P-MPR value, then the limitation on the uplink duty cycle should mainly target the same beam resource, that is, use the same spatial relationship, or Transmission using the spatial relationship call that has a quasi co-location (QCL) relationship with the spatial relationship of the original transmission.
- QCL quasi co-location
- the base station exchanges transmission resources for scheduling, especially beam resources, it may not be affected by the uplink duty cycle in the time domain. If the newly changed beam resource is a beam that is not directed toward the human body, the corresponding P-MPR should be relatively small.
- the UE judges that it can fall back to a lower maximum transmission power level, the UE informs the base station of the corresponding maximum transmission power level information, or directly informs the base station of the uplink duty cycle matching the lower maximum transmission power level, and the base station receives a new Maximum transmit power level or uplink duty cycle, the new duty cycle is used to constrain the new scheduling.
- the uplink duty cycle starts from the moment when the maximum transmission power level is changed and continues for at least one predefined time period; for example, 10 ms, or 5 ms, or multiple subframes, etc.;
- the uplink duty cycle starts from the moment when the maximum transmission power level is changed until the uplink duty cycle is updated;
- the new duty cycle can take effect directly; if the new duty cycle is more relaxed than the original duty cycle, the new duty cycle takes effect in the original duty cycle At least one predefined time period after the effective time of the air ratio;
- the new duty cycle is stricter than the original duty cycle, which means that the new duty cycle value is smaller than the original duty cycle value.
- the original duty cycle is 100% and the new duty cycle is 50%;
- the new duty ratio is more relaxed than the original duty ratio means that the new duty ratio takes a larger value than the original duty ratio.
- the original duty cycle is 50% and the new duty cycle is 100%;
- the UE finds that the actual maximum transmission power determined by 23 dBm of the current maximum transmission power level is insufficient, so it decides to increase the maximum transmission power level to 26 dBm and sends corresponding information to the base station. Assuming that the uplink power duty cycle corresponding to 23dBm is 100%, that is, unconstrained, the uplink power duty cycle corresponding to 26dBm is 50%. After the base station receives the UE to increase the maximum transmit power to 26 dBm, the base station determines the uplink duty cycle for the UE to be 50%.
- the base station updates the scheduling resources to schedule the UE to send new uplink transmissions.
- the updated scheduling resources correspond to the new beam resources, and its P-MPR is very low.
- the UE finds that the maximum transmit power level of 23dBm is also not used. Limited, so the base station is informed to adjust the maximum transmission power level to 23 dBm at time t1.
- the base station should adjust the uplink duty cycle of the UE to 100%, that is, the uplink duty cycle is not restricted.
- the uplink duty cycle starts from the moment when the maximum transmission power level is changed and continues for at least one predefined period of time, for example, 10 ms, then within 10 ms from time t0, the uplink duty cycle cannot exceed 50%. If the time difference between t0 and t1 is less than 10ms, it takes t0+10ms to relax the duty cycle to 100%. If the time difference from t0 to t1 is greater than or equal to 10 ms, the duty cycle can be relaxed to 100% at time t1.
- the uplink duty cycle starts from the moment when the maximum transmission power level is changed until the uplink duty cycle is updated. No need to consider continuing for a predetermined period of time, the duty cycle can be updated to 100% at time t1.
- the UE does not inform the base station of the adjustment of the maximum transmission power level, and uses the uplink duty cycle corresponding to the maximum transmission power level to control the duty cycle of the uplink transmission actually transmitted.
- the UE may not use the scheduling information (contained in the grant information grant), but a predefined scheduling method. That is, when power is limited, the UE uses at least one of the following methods to reduce the required power:
- Reduce MCS for example, the scheduled MCS is MCS7, and it is reduced to MCS6.
- the scheduling modulation order is 4, which is 16 Quadrature Amplitude Modulation (QAM), and it is reduced to 2, which is Quadrature Phase Shift Keying (QPSK).
- QAM Quadrature Amplitude Modulation
- QPSK Quadrature Phase Shift Keying
- a fixed MCS or modulation order for example, the lowest MCS, the lowest modulation order supported by the UE, and so on.
- the bandwidth is reduced to 1/2 of the scheduling bandwidth, the bandwidth is reduced to 1/3 of the scheduling bandwidth, etc.
- the base station performs blind detection. That is, decoding is performed according to the scheduling method in the grant information. If the solution is not correct, you need to try the above-mentioned predefined scheduling method to decode until the solution is correct, or all may not be correct after all attempts are made, and the solution is determined to be wrong.
- the virtual PHR is calculated based on the P-MPR being 0. For scenarios where the P-MPR in the candidate beams is very different, it is best for the base station to know the P-MPR of each beam.
- the UE when reporting the virtual PHR, if the P-MPR difference of the candidate beam exceeds the threshold, the UE also needs to report the P-MPR of the candidate beam.
- the UE may report the P-MPR levels of all the candidate beams, and may also report the largest number of beams among the candidate beams and their corresponding P-MPRs.
- the power limit is a relatively low value; the power limit in other directions is a relatively high value.
- the transmission in each beam direction does not exceed the true maximum transmit power in each direction
- the sum of the transmission power in each beam direction is not greater than the maximum true maximum transmission power among the true maximum transmission power in each direction.
- the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, or by hardware.
- the technical solution of the present disclosure can be essentially embodied in the form of a software product.
- the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, and optical disk) and includes several instructions to make a
- a terminal device which may be a mobile phone, computer, server, or network device, etc. executes the methods described in the embodiments of the present disclosure.
- a power control device is also provided.
- the device is used to implement the above embodiments and optional implementation manners, and descriptions that have already been described will not be repeated.
- the term "module” may implement a combination of software and/or hardware that performs predetermined functions.
- the devices described in the following embodiments are implemented in software, implementation of hardware or a combination of software and hardware is also possible and conceived.
- FIG. 6 is a block diagram 1 of a power control device according to an embodiment of the present invention. As shown in FIG. 6, it includes:
- the first determining module 62 is configured to determine one or more pieces of information related to the maximum transmission power
- the first sending module 64 is configured to send the maximum transmission power related information to the first communication node, where the maximum transmission power related information is related to a beam or a beam group.
- the information related to the maximum transmission power includes at least one of the following:
- the first determining module 62 is configured to perform at least one of the following:
- the first determining module 62 is configured to perform at least one of the following:
- the maximum transmission power related information is related to all or part of beams or beam groups in a predetermined beam set.
- the predetermined beam set includes one of the following:
- the purpose is SRS resources in the SRS resource set for codebook-based transmission
- the purpose is SRS resources in the SRS resource set based on non-codebook transmission
- the SRS resource in the SRS resource set used for beam management is the SRS resource set used for beam management
- part of the beams or beam groups in the predetermined beam set includes at least one of the following:
- the information related to the maximum transmission power and beam correlation includes one of the following:
- Each maximum transmit power related information corresponds to a transmit beam
- Each maximum transmission power related information corresponds to the difference between the maximum transmission power related information of the reference transmission beam and the maximum transmission power related information of other transmission beams;
- One piece of maximum transmission power-related information corresponds to the reference transmission beam, and the remaining maximum transmission power-related information is the difference between the reference transmission beam's maximum transmission power-related information and the other transmission beam's maximum transmission power-related information.
- one or more pieces of the maximum transmission power related information are determined:
- the difference in the maximum transmission power related information between beams or beam groups in the predetermined beam set is greater than a third predetermined threshold
- the amount of change in the maximum transmission power-related information of the beam or beam group in the predetermined beam set exceeds a fourth predetermined threshold
- the value of the maximum transmission power-related information determined by the currently transmitted parameter exceeds a fifth predetermined threshold
- the amount of change in the maximum transmission power-related information determined by the currently transmitted parameter exceeds a sixth predetermined threshold.
- the first sending module 64 is also used to:
- the beam includes one of the following: spatial relationship, reference signal resource, synchronization signal resource, antenna port, antenna panel, filter, and quasi-co-location information.
- FIG. 7 is a block diagram 2 of a power control device according to an embodiment of the present invention. As shown in FIG. 7, it includes:
- the second determination module 72 is used to determine the required power and the actual maximum transmission power of the uplink transmission
- the third determining module 74 is configured to determine the maximum transmission power related information according to the required power and the actual maximum transmission power;
- the second sending module 76 is configured to send the maximum transmission power related information to the first communication node.
- the device further includes:
- the adjustment module is used to adjust the uplink transmission power according to the required power and the actual maximum transmission power.
- the adjustment module is also used to calculate the adjustment module.
- the power of the uplink transmission is adjusted by increasing the power level:
- the required power is higher than the actual maximum transmit power
- the current power level is not the highest power level
- the actual maximum transmit power is determined by the power management maximum power reduction P-MPR;
- the P-MPR for determining the actual maximum transmission power is higher than the sum of other maximum power reduction MPR terms for determining the actual maximum transmission power by a second preset value.
- the device further includes:
- the boosting module is configured to boost the power level as the maximum transmit power related information when at least one of the following conditions is met:
- the required power is higher than the actual maximum transmit power
- the current power level is not the highest power level
- the actual maximum transmit power is determined by the power management maximum power reduction P-MPR;
- the P-MPR for determining the actual maximum transmission power is higher than the sum of other maximum power reduction MPR terms for determining the actual maximum transmission power by a second preset value.
- the device further includes:
- the reduction module is configured to reduce the power level as the maximum transmission power related information when at least one of the following conditions is met:
- the current power level is not the lowest power level
- the required power is lower than the actual maximum transmit power corresponding to a power level lower than the current power level
- the difference between the required power and the actual maximum transmit power corresponding to a power level lower than the current power level is greater than a third preset value.
- the second sending module 76 is also used to
- the information related to the maximum transmission power is carried in the form of uplink control information UCI and sent to the first communication node in the PUCCH or PUSCH.
- the information related to the maximum transmission power includes one of the following:
- the device further includes: an effective module for performing at least one of the following:
- the duration ratio takes effect from the current transmission and continues for at least one predefined time period
- the duration ratio takes effect from the current transmission until the duration ratio is updated by the new duration ratio
- the second duration ratio becomes effective at least one predefined time after the effective time of the first duration ratio.
- An embodiment of the present invention also provides a power control device, which is applied to a first communication node and includes:
- the first receiving module is configured to receive the maximum transmission power related information sent by the second communication node, wherein the maximum transmission power related information is related to the beam or the beam group.
- the information related to the maximum transmission power includes at least one of the following:
- the maximum transmission power related information is related to all or part of beams or beam groups in a predetermined beam set.
- the predetermined beam set includes one of the following:
- the purpose is SRS resources in the SRS resource set for codebook-based transmission
- the purpose is SRS resources in the SRS resource set based on non-codebook transmission
- the SRS resource in the SRS resource set used for beam management is the SRS resource set used for beam management
- part of the beams or beam groups in the predetermined beam set includes at least one of the following:
- the information related to the maximum transmission power and beam correlation includes one of the following:
- Each maximum transmit power related information corresponds to a transmit beam
- Each maximum transmission power related information corresponds to the difference between the maximum transmission power related information of the reference transmission beam and the maximum transmission power related information of other transmission beams;
- One piece of maximum transmission power-related information corresponds to the reference transmission beam, and the remaining maximum transmission power-related information is the difference between the reference transmission beam's maximum transmission power-related information and the other transmission beam's maximum transmission power-related information.
- the embodiment of the invention also discloses a power control device, which is applied to the first communication node and includes:
- the second receiving module is configured to receive the maximum transmission power related information sent by the second communication node.
- the information related to the maximum transmission power includes one of the following:
- the above modules can be implemented by software or hardware, and the latter can be implemented by the following methods, but not limited to this: the above modules are all located in the same processor; or, the above modules can be combined in any combination The forms are located in different processors.
- An embodiment of the present disclosure also provides a storage medium in which a computer program is stored, wherein the computer program is set to execute any of the steps in the above method embodiments when it is run.
- the above storage medium may be set to store a computer program for performing the following steps:
- the above storage medium may also be set to store a computer program for performing the following steps:
- S21 Determine the required power and the actual maximum transmit power for uplink transmission.
- the above storage medium may also be set to store a computer program for performing the following steps:
- S31 Receive information about maximum transmission power sent by the second communication node, where the information about maximum transmission power is related to a beam or a beam group.
- the above storage medium may also be set to store a computer program for performing the following steps:
- the above storage medium may include but is not limited to: Universal Serial Bus flash disk (Universal Serial Bus flash disk, U disk), read-only memory (Read-Only Memory, referred to as ROM), Random access memory (Random Access Memory, RAM for short), mobile hard disk, magnetic disk or optical disk and other media that can store computer programs.
- Universal Serial Bus flash disk Universal Serial Bus flash disk, U disk
- Read-Only Memory referred to as ROM
- Random access memory Random access memory
- mobile hard disk magnetic disk or optical disk and other media that can store computer programs.
- An embodiment of the present disclosure also provides an electronic device, including a memory and a processor, where a computer program is stored in the memory, and the processor is configured to run the computer program to perform the steps in any one of the foregoing method embodiments.
- the electronic device may further include a transmission device and an input-output device, where the transmission device is connected to the processor, and the input-output device is connected to the processor.
- the foregoing processor may be configured to perform the following steps through a computer program:
- the foregoing processor may also be configured to perform the following steps through a computer program:
- S21 Determine the required power and the actual maximum transmit power for uplink transmission.
- the foregoing processor may also be configured to perform the following steps through a computer program:
- S31 Receive information about maximum transmission power sent by the second communication node, where the information about maximum transmission power is related to a beam or a beam group.
- the foregoing processor may also be configured to perform the following steps through a computer program:
- modules or steps of the present disclosure can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed in a network composed of multiple computing devices Above, optionally, they can be implemented with program code executable by the computing device, so that they can be stored in the storage device to be executed by the computing device, and in some cases, can be in a different order than here
- the steps shown or described are performed, or they are made into individual integrated circuit modules respectively, or multiple modules or steps among them are made into a single integrated circuit module to achieve. In this way, the present disclosure is not limited to any specific combination of hardware and software.
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Abstract
本公开提供了一种功率控制方法、装置及电子装置,其中,该方法包括:确定至少一个最大发送功率相关信息;将所述至少一个最大发送功率相关信息发送给第一通信节点,其中,所述至少一个最大发送功率相关信息与波束或波束分组相关。
Description
本申请要求在2019年01月11日提交中国专利局、申请号为201910028183.0的中国专利申请的优先权,该申请的全部内容通过引用结合在本申请中。
本公开涉及通信领域,具体而言,涉及一种功率控制方法、装置及电子装置。
第五代移动通信系统需要支持不同类型的应用场景,其中超高速率是很关键的需求。高频段能提供丰富的宽带频谱资源,因而成为新一代移动通信的重要研究方向。相对于传统的低频段通信,高频段通信具有衰减快,通信距离短的特点。为了改善覆盖,波束是高频段主要的通信方式。波束能实现将信号在较小的角度范围发送,起到聚集能量的作用。另外,高频段的天线尺寸相对低频段的小,这也是高频段更容易使用大规模天线实现更精细的波束的优势。
除了高频段,第五代移动通信系统还支持在传统的频段上工作。在第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)的标准中,传统的频段被称为FR1(Frequency Range 1),是指6GHz及以下的频段;高频段被称为FR2(Frequency Range 2),是指24GHz以上的频段。不管是高频段还是低频段,无线通信信号是通过电磁波承载的,因此需要考虑电磁辐射的限制。FR1的用户设备(User Equipment,UE)的电磁辐射一般采用吸收比(Specific Absorption Ratio,简称为SAR)来限制,单位为W/kg,瓦/每千克;而FR2是通过功率密度(Power Density,简称为PD)或者最大允许辐射(Maximum Permissible Exposure,简称为MPE)来限制,单位为W/m
2,瓦/每平方米。
传统频段FR1的电磁辐射相关的测试和功率控制机制已经颇为成熟。但是,高频段FR2的电磁辐射相关的测试以及功率控制机制还正在研究中。FR2与FR1最大的不同在于波束相关的特性。通过波束发送信号时,是否穿过人体,尤其是在发送端的近场范围,对功率的限制有非常大的不同。
如何在FR2中充分利用波束特性灵活使用功率,还能符合电磁辐射相关测试要求,是相关技术还不能解决的问题。
针对相关技术中如何在FR2中充分利用波束特性灵活使用功率的问题,尚未提出解决方案。
发明内容
本发明实施例提供了一种功率控制方法、装置及电子装置,以至少解决相关技术中如何在FR2中充分利用波束特性灵活使用功率的问题。
根据本公开的一个实施例,提供了一种功率控制方法,包括:
确定一个或多个最大发送功率相关信息;
将所述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关。
根据本公开的另一个实施例,还提供了一种功率控制方法,包括:
确定上行传输的需求功率和实际最大发送功率;
根据所述需求功率和所述实际最大发送功率确定所述最大发送功率相关信息;
将所述最大发送功率相关信息发送给第一通信节点。
根据本公开的另一个实施例,还提供了一种功率控制方法,包括:接收第二通信节点发送的最大发送功率相关信息,其中,所述最大发送功率相关信息与波束或波束分组相关。
根据本公开的另一个实施例,还提供了一种功率控制方法,包括:
接收第二通信节点发送的最大发送功率相关信息。
根据本公开的另一个实施例,还提供了一种功率控制装置,包括:
获取模块,用于确定一个或多个最大发送功率相关信息;
第一发送模块,用于将所述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关。
根据本公开的另一个实施例,还提供了一种功率控制装置,包括:
第一确定模块,用于确定上行传输的需求功率和实际最大发送功率;
第二确定模块,用于根据所述需求功率和所述实际最大发送功率确定所述最大发送功率相关信息;
第二发送模块,用于将所述最大发送功率相关信息发送给第一通信节点。
根据本公开的另一个实施例,还提供了一种功率控制装置,包括:
第一接收模块,用于接收第二通信节点发送的最大发送功率相关信息,其 中,所述最大发送功率相关信息与波束或波束分组相关。
根据本公开的另一个实施例,还提供了一种功率控制装置包括:
第二接收模块,用于接收第二通信节点发送的最大发送功率相关信息。
根据本公开的又一个实施例,还提供了一种存储介质,所述存储介质中存储有计算机程序,其中,所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本公开的又一个实施例,还提供了一种电子装置,包括存储器和处理器,所述存储器中存储有计算机程序,所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
通过本公开,确定一个或多个最大发送功率相关信息;将所述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关,可以解决相关技术中如何在FR2中充分利用波束特性灵活使用功率的问题,通过向第一通信节点发送最大发送功率信息,第一通信节点便可确定传输资源,从而实现了在FR2中充分利用波束特性灵活使用功率。
图1是本发明实施例的一种功率控制方法的移动终端的硬件结构框图;
图2是根据本发明实施例的一种功率控制方法的流程图一;
图3是根据本发明实施例的一种功率控制方法的流程图二;
图4是根据本发明实施例的通过波束进行上行传输的示意图一;
图5是根据本发明实施例的通过波束进行上行传输的示意图二;
图6是根据本发明实施例的功率控制装置的框图一;
图7是根据本发明实施例的功率控制装置的框图二。
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是,本公开的说明书和权利要求书及上述附图中的术语“第一”、 “第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。
实施例1
本申请实施例一所提供的方法实施例可以在移动终端、计算机终端或者类似的运算装置中执行。以运行在移动终端上为例,图1是本发明实施例的一种功率控制方法的移动终端的硬件结构框图,如图1所示,移动终端10可以包括一个或多个(图1中仅示出一个)处理器102(处理器102可以包括但不限于微处理器(Microprocessor Control Unit,MCU)或可编程逻辑器件(Field Programmable Gate Array,FPGA)等的处理装置)和用于存储数据的存储器104,可选地,上述移动终端还可以包括用于通信功能的传输设备106以及输入输出设备108。本领域普通技术人员可以理解,图1所示的结构仅为示意,其并不对上述移动终端的结构造成限定。例如,移动终端10还可包括比图1中所示更多或者更少的组件,或者具有与图1所示不同的配置。
存储器104可用于存储计算机程序,例如,应用软件的软件程序以及模块,如本发明实施例中的功率控制方法对应的计算机程序,处理器102通过运行存储在存储器104内的计算机程序,从而执行各种功能应用以及数据处理,即实现上述的方法。存储器104可包括高速随机存储器,还可包括非易失性存储器,如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中,存储器104可进一步包括相对于处理器102远程设置的存储器,这些远程存储器可以通过网络连接至移动终端10。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输设备106用于经由一个网络接收或者发送数据。上述的网络具体实例可包括移动终端10的通信供应商提供的无线网络。在一个实例中,传输设备106包括一个网络适配器(Network INterface CoNtroller,简称为NIC),其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中,传输设备106可以为射频(Radio FrequeNcy,简称为RF)模块,其用于通过无线方式与互联网进行通讯。
在本实施例中提供了一种功率控制方法,应用于上述移动终端。图2是根据本发明实施例的一种功率方法的流程图一,如图2所示,该流程包括如下步骤:
步骤S202,确定一个或多个最大发送功率相关信息。
步骤S204,将所述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关。
通过上述步骤S202至S204,确定一个或多个最大发送功率相关信息;将所 述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关,可以解决相关技术中如何在FR2中充分利用波束特性灵活使用功率的问题,通过向第一通信节点发送最大发送功率相关信息,第一通信节点便可确定传输资源,从而实现了在FR2中充分利用波束特性灵活使用功率。
可选地,所述最大发送功率相关信息包括以下至少之一:
功率管理最大功率降低(Power Management Maximum Power Reduction,P-MPR)信息,所述P-MPR信息包括以下之一:P-MPR的实际取值、P-MPR的取值是否超过预定门限的指示信息、P-MPR的取值在预定的取值区间的指示信息;
实际最大发送功率信息,所述实际最大发送功率信息包括以下之一:实际最大发送功率的取值、实际最大发送功率的取值是否超过预定门限的指示信息、实际最大发送功率的取值在预定的取值区间的指示信息;
功率余量(Power Headroom,PHR)信息,所述PHR信息包括以下之一:PHR实际取值、PHR的取值是否超过预定门限的指示信息、PHR的取值在预定的取值区间的指示信息。
可选地,所述最大发送功率相关信息根据以下至少之一确定:
传输参数;所述传输参数是指UE发送的上行传输的相关参数。传输包括以下之一:PUSCH传输、PUCCH传输、探测参考信号(Sounding Reference Signal,SRS)传输。传输的参数包括传输的资源,例如:时域、频域、空域、码域、波束等参数,还包括编码相关的参数,例如:调制编码方式、传输速率、多天线传输相关的参数等,还包括功控参数等。传输参数可以参考基站在下行控制信息(Downlink Control Information,DCI)中指示给UE的信息以及高层无线资源控制(Radio Resource Control,RRC)信息配置的参数。
最大发送功率相关信息对应的波束或波束分组的所述P-MPR信息。
可选地,若所述最大发送功率相关信息是基于真实传输的,确定一个或多个所述最大发送功率相关信息包括以下至少之一:
其中,所述最大发送功率相关信息是基于真实传输是指,计算最大发送功率相关信息时,该最大发送功率相关信息所属的小区存在真实的传输。该真实传输是上行传输,可以是基站用DCI中包含的上行链路授权(UL grant)信息调度的PUSCH传输,也可以是RRC信令配置的PUSCH传输,也可以是RRC信令配置与DCI信令结合触发的PUSCH传输,也可以是指PUCCH传输,也以是指SRS传输。
根据最大发送功率相关信息对应的波束或波束分组确定波束或波束分组相关的所述P-MPR信息;
根据所述真实传输的参数确定其他最大功率降低MPR,根据所述其他MPR以及所述波束或波束分组相关的所述P-MPR信息确定波束或波束分组相关的所述实际最大发送功率信息;
根据所述真实传输的参数确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定波束或波束分组相关的所述PHR信息;
根据所述真实传输的参数、所述最大发送功率相关信息对应的波束或波束分组确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定波束或波束分组相关的所述PHR信息。
根据真实传输的参数、最大发送功率相关信息对应的波束或波束分组确定需求功率是指:将真实传输的参数中的波束相关的参数替换为最大发送功率相关信息对应的波束或波束分组,根据部分替换后的真实传输的参数确定需求功率。例如,PUSCH传输参数中,资源指示SRI与功控参数有关联关系。假设SRI1,SRI2构成了上行备选波束集合,则SRI1和SRI2都对应一套功控参数。假定最大发送功率相关信息的波束相关信息分别对应SRI1和SRI2。对于某一PUSCH传输,基站会通过各种方式使得UE获得该传输相关的SRI,UE根据该SRI确定发送资源,例如,SRI1,则UE使用发送SRI1对应的SRS传输时的空间关系或发送滤波器参数发送PUSCH。当上报SRI1对应的最大发送功率相关信息时,可以使用上述的真实PUSCH传输的所有参数计算需求功率。当上报SRI2对应的最大发送功率相关信息时,可以使用上述的真实PUSCH传输的部分参数计算需求功率,即非波束相关的真实传输的参数;而与波束相关的参数,则要从SRI1替换为SRI2,即UE通过SRI2获取另外一套功控参数用于计算SRI对应的最大发送功率相关信息。上述一套功控参数包括以下至少之一:开环功控参数,闭环功控参数,路损功控参数。其中,开环功控参数包括目标接收功率P0和/或路损补偿因子alpha;闭环功控参数用于至少指示闭环功控编号;路损功控参数用于确定测量路损的参考信号(Reference signal,RS)资源。
基于虚拟传输的最大发送功率相关信息与基于真实传输的最大发送功率相关信息类似。与波束相关的参数使用相应的最大发送功率相关信息对应的波束或波束分组确定,然后根据波束相关的信息,例如SRI或空间关系,获得最大发送功率相关信息对应的各个波束或波束分组的功控参数。进而获得最大发送功率相关信息对应的各个波束或波束分组的需求功率。
可选地,若所述最大发送功率相关信息是基于虚拟传输时,确定一个或多 个所述最大发送功率相关信息包括以下至少之一:
所述最大发送功率相关信息是基于虚拟传输是指,计算最大发送功率相关信息时,该最大发送功率相关信息所属的小区不存在真实的传输。虚拟传输也叫做参考传输。即在没有真实传输时,还要假设存在虚拟的传输,用来计算需求功率。即功控参数公式中,数据速率相关项、资源块分配的相关项都为0。计算真实最大发送功率时,基于虚拟传输的其他MPR信息也是0。本方案中计算真实最大发送功率时P-MPR信息不能假设为0,而是要取计算最大发送功率相关信息对应的波束的P-MPR值。
根据所述最大发送功率相关信息对应的波束或波束分组确定所述波束或波束分组相关的所述P-MPR信息;
根据所述虚拟传输的参数确定其他最大功率降低MPR,并根据所述其他MPR以及所述波束或波束分组相关的所述P-MPR信息确定所述波束或波束分组相关的所述实际最大发送功率信息;
根据所述虚拟传输的参数确定需求功率,并根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定所述波束或波束分组相关的所述功率余量信息;
根据所述虚拟传输的参数、所述最大发送功率相关信息对应的波束或波束分组确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定所述波束或波束分组相关的所述PHR信息。
可选地,所述最大发送功率相关信息与预定波束集合内所有或部分的波束或波束分组相关。
可选地,所述预定波束集合包括以下之一:
上行发送波束备选集合;
探测参考信息SRS资源集合中的SRS资源;
用途为基于码本的传输的SRS资源集合中的SRS资源;
用途为基于非码本的传输的SRS资源集合中的SRS资源;
用途为波束管理的SRS资源集合中的SRS资源;
为物理上行控制信道PUCCH配置的空间关系集合。
可选地,所述预定波束集合内部分的波束或波束分组包括以下至少之一:
所述预定波束集合内最大发送功率相关信息值大于第一预定阈值的波束或者波束组;
所述预定波束集合内最大发送功率相关信息值最大的预定个数的波束或者波束组;
所述预定波束集合内最大发送功率相关信息值的变化大于第二预定阈值的波束或者波束组。
可选地,所述最大发送功率相关信息与波束相关包括以下之一:
每个最大发送功率相关信息都对应一个发送波束;
每个最大发送功率相关信息都对应基准发送波束的最大发送功率相关信息与其他发送波束的最大发送功率相关信息之差;
一个最大发送功率相关信息对应基准发送波束,其余的最大发送功率相关信息是基准发送波束的最大发送功率相关信息与其他发送波束的最大发送功率相关信息之差。
可选地,在满足以下条件至少之一时,确定一个或多个所述最大发送功率相关信息:
所述预定波束集合内波束或波束组之间的所述最大发送功率相关信息的差值大于第三预定阈值;
所述预定波束集合内波束或波束组的所述最大发送功率相关信息的变化量超过第四预定阈值;
当前传输的参数确定的所述最大发送功率相关信息的值超过第五预定阈值;
当前传输的参数确定的所述最大发送功率相关信息的变化量超过第六预定阈值。
可选地,将所述最大发送功率相关信息发送给所述第一通信节点包括:
将所述最大发送功率相关信息携带在CSI报告或功率余量PHR信息中发送给所述第一通信节点。即所述最大发送功率相关信息在PHR信息中承载,PHR信息是指媒体接入控制(Media Access Control,简称为MAC)控制元素(control element,CE)中的PHR,或在CSI报告中承载。
可选地,所述波束包括以下之一:空间关系、参考信号资源、同步信号资源、天线端口、天线面板、滤波器、准共址信息。
实施例2
本发明实施例还提供了一种功率控制方法,应用于第二通信节点(即上述 移动终端),图3是根据本发明实施例的一种功率控制方法的流程图二,如图3所示,该流程包括如下步骤:
步骤S302,确定上行传输的需求功率和实际最大发送功率。
步骤S304,根据所述需求功率和所述实际最大发送功率确定所述最大发送功率相关信息。
步骤S306,将所述最大发送功率相关信息发送给第一通信节点。
通过上述步骤S302至S306,确定上行传输的需求功率和实际最大发送功率;根据所述需求功率和所述实际最大发送功率确定所述最大发送功率相关信息;将所述最大发送功率相关信息发送给第一通信节点,可以解决相关技术中如何在FR2中充分利用波束特性灵活使用功率的问题,通过向第一通信节点发送最大发送功率信息,第一通信节点便可确定传输资源,从而实现了在FR2中充分利用波束特性灵活使用功率。
可选地,所述方法还包括:根据所述需求功率和所述实际最大发送功率对上行传输的功率进行调节。
可选地,根据所述需求功率和所述实际最大发送功率对上行传输的功率进行调节包括:
在满足以下条件至少之一时,通过提升功率等级的方式对上行传输的功率进行调节:
所述需求功率高于所述实际最大发送功率;
当前的功率等级不是最高功率等级;
所述实际最大发送功率是由功率管理最大功率降低P-MPR确定的;
确定所述实际最大发送功率的P-MPR高于第一预设值;
确定所述实际最大发送功率的P-MPR比确定所述实际最大发送功率的其他最大功率降低MPR项之和高第二预设值。
可选地,所述方法还包括:
在满足以下条件至少之一时,提升所述功率等级作为所述最大发送功率相关信息:
所述需求功率高于所述实际最大发送功率;
当前的功率等级不是最高功率等级;
所述实际最大发送功率是由功率管理最大功率降低P-MPR确定的;
确定所述实际最大发送功率的P-MPR高于第一预设值;
确定所述实际最大发送功率的P-MPR比确定所述实际最大发送功率的其他最大功率降低MPR项之和高第二预设值。
可选地,所述方法还包括:
在满足以下条件至少之一时,降低所述功率等级作为最大发送功率相关信息:
当前的功率等级不是最低功率等级;
所述需求功率低于比当前功率等级低的功率等级对应的实际最大发送功率;
所述需求功率与比当前功率等级低的功率等级对应的实际最大发送功率之间相差大于第三预设值。
可选地,将所述最大发送功率相关信息发送给所述第一通信节点包括:
将所述最大发送功率相关信息携带在PHR信息或MAC CE中发送给所述第一通信节点;或者
将所述最大发送功率相关信息承载在以上行链路控制信息(uplink control information,简称为UCI)的形式在物理上行链路控制信道(Physical Uplink Control Channel,简称为PUCCH)或物理上行共享信道(Physical Uplink Shared Channel,简称为PUSCH)中发送给所述第一通信节点。
可选地,所述最大发送功率相关信息包括以下之一:
功率等级信息;
时长占比信息。
可选地,所述功率等级信息与所述时长占比信息有预定义的关联关系。
可选地,所述方法还包括以下至少之一:
时长占比从当前传输开始生效,延续至少一个预定义时间段;
时长占比从当前传输开始生效,直到所述时长占比被新的时长占比更新;
如果新的第二时长占比比之前的第一时长占比小,所述第二时长占比直接生效;
如果所述第二时长占比比所述第一时长占比大,所述第二时长占比在所述第一时长占比的生效时间之后至少一个预定义时间生效。
实施例3
本发明实施例还提供了一种功率控制方法,应用于第一通信节点,包括:
接收第二通信节点发送的最大发送功率相关信息,其中,所述最大发送功率相关信息与波束或波束分组相关。
进一步地,第一通信节点可以根据所述最大发送功率相关信息确定所述第二通信节点的上行传输的资源。
可选地,所述最大发送功率相关信息包括以下至少之一:
功率管理最大功率降低P-MPR信息;
实际最大发送功率信息;
功率余量PHR信息。
可选地,所述最大发送功率相关信息与预定波束集合内所有或部分的波束或波束分组相关。
可选地,所述预定波束集合包括以下之一:
上行发送波束备选集合;
探测参考信息SRS资源集合中的SRS资源;
用途为基于码本的传输的SRS资源集合中的SRS资源;
用途为基于非码本的传输的SRS资源集合中的SRS资源;
用途为波束管理的SRS资源集合中的SRS资源;
为物理上行控制信道PUCCH配置的空间关系集合。
可选地,所述预定波束集合内部分的波束或波束分组包括以下至少之一:
所述预定波束集合内最大发送功率相关信息值大于第一预定阈值的波束或者波束组;
所述预定波束集合内最大发送功率相关信息值最大的预定个数的波束或者波束组;
所述预定波束集合内最大发送功率相关信息值的变化大于第二预定阈值的波束或者波束组。
可选地,所述最大发送功率相关信息与波束相关包括以下之一:
每个最大发送功率相关信息都对应一个发送波束;
每个最大发送功率相关信息都对应基准发送波束的最大发送功率相关信息 与其他发送波束的最大发送功率相关信息之差;
一个最大发送功率相关信息对应基准发送波束,其余的最大发送功率相关信息是基准发送波束的最大发送功率相关信息与其他发送波束的最大发送功率相关信息之差。
实施例4
本发明实施例还公开了一种功率控制方法,应用于第一通信节点,包括:
接收第二通信节点发送的最大发送功率相关信息。
进一步地,第一通信节点可以根据所述最大发送功率相关信息确定所述第二通信节点的上行传输的资源。
可选地,所述最大发送功率相关信息包括以下之一:
功率等级信息;
时长占比信息。
可选地,所述功率等级信息与所述时长占比信息有预定义的关联关系。
下面对实施例1至4进行详细说明。
本发明实施例提供一种波束场景的功率控制,包括:最大发送功率提升:UE在功率受限时在能力范围内可以升高功率发送,并通过不同的信息告知基站其提升了功率,以便后续的调度满足上行时长占比的约束条件。最大发送功率回退:在有上行时长占比的限制时,UE需要实时检测当前传输是否可以使用降低的最大发送功率等级,以便在合适的条件下通知基站放松/取消上行时长占比的约束。UE告知基站其发送波束相关的P-MPR信息,使得基站能够预估每个波束的真实最大允许功率,尽量避免在信道条件差不多的情况下选择P-MPR大的波束(朝向人体的波束)调度上行传输。
第二通信节点(UE)发送给第一通信节点(基站)以下至少之一:最大发送功率信息、时长占比信息、MPR相关信息;
第一通信节点根据上述信息至少之一为第二通信节点确定传输的资源。
最大发送功率信息包括以下之一:最大发送功率等级,最大发送功率变化量超过门限指示。
最大发送功率等级用于指示不同的最大发送功率。例如,UE支持多种功率等级(power class),不同power class对应不同的最大发送功率等级。
最大发送功率变化量是指真实的最大发送功率变化量,即考虑了MPR, A-MPR,P-MPR的真实的最大发送功率值。变化超过门限包括变大和变小两种。
时长占比信息用于确定在预定义时间段内所述传输可以占用的最大时长。
时长占比信息是指预定时间段内传输占用时间与预定时间段长度的比值。
时长占比信息与最大发送功率等级存在对应关系。
越高的最大发送功率等级对应的时间占空比越低。最低的最大发送功率等级对应的时间占空比为100%,也可以说,没有空间占空比的约束。
MPR相关信息包括以下之一:P-MPR值,P-MPR值超过门限指示,P-MPR取值等级指示,MPE信息。
MPR相关信息与以下至少之一有关联:波束资源(组)、空间关系(组)、参考信号资源(组)。
关联包括:每个波束资源(组)、空间关系(组)、参考信号资源(组)对应一个MPR相关信息。
进一步地,在上下行互易成立时,下行波束管理的反馈信息中才包括MPR相关信息。
进一步地,几个波束的MPE差异大于预定门限才需要上报。
上报整个(部分)备选波束集合中的波束对应的MPR相关信息。
最大发送功率信息,时长占比信息,MPR相关信息在CSI报告中承载,也可以在PHR报告中承载。
判断是否携带,或者触发新的CSI/PHR报告携带。
最大发送功率信息、时长占比信息,主要是有功率等级/占比变化时才上报。
判断是否携带MPR相关信息有以下条件:
上行的备选波束集合中有波束的MPR相关信息值超过门限(初次);
上行的备选波束集合中有波束的MPR相关信息值相对于上次上报的变化值超过门限(更新);
实际最大发送功率P
CMAX值变化超过门限,(变小的比较紧急,变大的不太紧急),相关技术中的PHR的条件是路径损耗(Path Loss,PL)的变化超过门限;
功率接近P
CMAX。
当所述传输的需求功率高于当前的真实最大发送功率,则提升最大发送功率等级。
当所述传输的需求功率比当前的真实最大发送功率高预定义第一门限,则提升最大发送功率等级,可以避免乒乓切换。
当需求功率高于当前的真实最大发送功率,则提升最大发送功率等级,使得需求功率低于提升最大发送功率等级对应的真实最大发送功率,提升最大发送功率等级一级或者多级。
当所述传输的需求功率高于当前的真实最大发送功率,并且当前的最大功率等级不是最高等级的最大功率等级,则提升最大发送功率等级。
当所述传输的需求功率低于比当前最大发送功率等级低的最大发送功率等级对应的真实最大发送功率,则降低最大发送功率等级。
可能是信道条件变好,PL变小,或者也可能是换了beam,P-MPR变小,最终表现是需求功率小于低一级的最大发送功率了,那么可以使用更低一级的功率对应的占空比。
当所述传输的需求功率比更低的最大发送功率等级对应的真实最大发送功率低预定义第二门限,则降低最大发送功率等级;
当所述传输的需求功率比更低的一级或者多级最大发送功率等级对应的真实最大发送功率低,则降低最大发送功率等级到该等级;
当所述传输的需求功率高于当前的真实最大发送功率,且当前传输的真实最大发送功率是由P-MPR确定的,则提升最大发送功率等级。P-MPR比其他MPR的取值大,起决定作用。并且认为只有P-MPR因素导致的功率不足才能提升最大功率等级。
当所述传输的需求功率高于当前的真实最大发送功率,且当前传输的真实最大发送功率是由P-MPR确定的,且该P-MPR高于第三门限,则提升最大发送功率等级。
当所述传输的需求功率高于当前的真实最大发送功率,且当前传输的真实最大发送功率是由P-MPR确定的,且P-MPR比其他MPR项之和高第四门限,则提升最大发送功率等级。
发送最大发送功率信息是指发送新的(提升/降低的)最大发送功率等级,和/或发送新的最大发送功率等级对应的时长占比信息。
所述的传输的资源包括以下至少之一:传输的时长占比,空间关系。
第一通信节点确定第二通信节点的传输的时域占比不大于所述的时长占比。
通过本发明实施例,使得UE可以在能力范围内灵活处理当前传输的功率, 并告知基站相关信息,使后续的上行传输占比受到约束,满足电磁波的使用要求。UE在合适的条件下可以通知基站放松/取消上行传输占比的限制。另外,UE通过上报波束相关的P-MPR,使基站能预判波束的最大发送功率,从而尽量避免调度人体方向的波束发送上行传输。
在相关通信技术中,UE发送上行传输时,需要为该传输确定实际的发送功率。确定发送功率包括两部分:确定该传输的需求功率;在需求功率与最大允许功率中取一个较小值作为实际的发送功率。
其中,确定传输的需求功率是指利用该传输的各类功控相关的参数得到的功率。功控相关的参数包括以下至少之一:开环功控参数、闭环功控参数、路径损耗(PL,PathLoss,简称路损)参数。开环功控参数包括以下至少之一:目标接收功率、路径损耗因子。功控相关的参数还可能包括与带宽有关的功率调整量、与速率有关的功率调整量等。
最大允许功率是指某次传输的发送功率上限值,也称为真实最大发送功率,或实际最大发送功率,记为P
CMAX。最大允许功率通常根据UE能力、基站部署、频带信息以及其他因素确定。
UE在确定最大发送功率P
CMAX时首先需要确定一个上限和下限,在上下限之间的取值都是合法的,如下:
P
CMAX_L,c≤P
CMAX,c≤P
CMAX_H,c
而上限和下限又分别定义如下:
P
CMAX_L,c=MIN{P
EMAX,c-ΔT
C,c,(P
PowerClass-ΔP
PowerClass)-MAX(MPR
c+A-MPR
c+ΔT
IB,c+ΔT
C,c+ΔT
ProSe,P-MPR
c)}
P
CMAX_H,c=MIN{P
EMAX,c,P
PowerClass-ΔP
PowerClass}
其中,
下角标c表示参数是区分小区的,表示小区c。
P
EMAX,c由网络侧配置的最大发送功率,与网络部署策略有关。
P
PowerClass是未考虑功率偏差容限(下面简称为容限)的最大的发送功率。不同power class对应不同的取值。在Power class 3时,该参数为23dBm。Power class 2时,该参数为26dBm。
ΔP
PowerClass是对power class 2 UE在上下行配比的配置为0或者6,也就是上行占用时间较多时的P
PowerClass的进一步降低,取值为3dB,对于其他上下行配比的取值为0dB。
MPR(Maximum Power Reduction,最大功率降低)参数是为了考虑高阶调制 与编码策略(Modulation and Coding Scheme,MCS)和传输带宽资源块(Resource Block,RB)因素。调制阶数越高,最大发送功率限制得越多,允许的最大发送功率相对越小;实际分配的RB越多,最大发送功率限制得越多,允许的最大发送功率越小。
附加最大功率降低(Additional MPR,A-MPR)参数是为了考虑额外的特定部署场景的需求。即不同部署场景或者不同国家地区对射频发送的要求有所不同。大部分场景的取值在1~5dB,也有个别场景取值达到17dB。
T
IB,c是对一些小区c设置的额外的容限,取值为0dB或者根据配置不同在0~0.9dB之间。
T
C,c是对上下边带而设置的,取值可以为1.5dB或者0dB。
T
ProSe是考虑用户之间直接通信场景而设置的,取值为0.1dB或者0dB。
P-MPR
c即功率管理最大功率降低,是考虑电磁能量吸收、多系统之间干扰减小等因素而设置的最大发送功率减少量。
为了描述方便,相对于P-MPR功率管理最大功率降低,本发明实施例把MPR,A-MPR以及ΔT
IB,c,ΔT
C,c,ΔT
ProSe称为其他最大功率降低量。其他最大功率降低量之和与P-MPR中的较大者确定P
CMAX_L,c的值。
FR1的功率等级3(power class 3)的最大发送功率为23dBm,电磁波吸收比值(Specific Absorption Rate,SAR)的因素通过P-MPR体现,即UE根据各种限制设置合适的P-MPR,真实的发送功率不超过23dBm减去P-MPR的值。FR1的功率等级2的最大发送功率为26dBm,但是仅在上行传输的占空比比较低时,才能使用26dBm的最大发送功率限制,如果上行传输的占空比(Duty Cycle)比较高时,最多只能使用23dBm的最大发送功率限制。
在FR2中,波束是主要的通信方式,而发送波束是否朝向人体以及与人体的距离对P-MPR的影响会有很大不同。相关测试表明,使用朝向人体的波束发送上行信号,P-MPR可能会达到10dB以上。因此,由于FR2中波束可能动态切换,因此P-MPR也需要适应波束的动态切换。本发明实施例提供增强的功控方法使得在动态切换波束场景也能高效地利用功率。
假设UE可以获得波束相关的MPE的信息,UE根据波束的MPE设置合适的当前使用的波束的P-MPR。
如果UE不支持动态测量MPE的能力,则波束相关的MPE可以是静态设 置的。例如,UE的天线设计决定了其波束与屏幕的方向,假设在绝大多数场景中,屏幕都是面对人体的,那么UE的波束方向与屏幕垂直方向的关系可以确定波束相关的MPE。
如果UE支持动态测量MPE的能力,则波束相关的MPE就可以根据测量结果获得。例如,UE借助特别的检测手段,如红外线设备等,检测到一个波束方向上是否有人体,以及人体的远近等参数,从而评估该波束方向的MPE。
UE至少能获得待发送波束的MPE信息。UE能获得任意可能发送的波束的MPE信息。或者,UE能获得上行发送波束待选集合中的各个波束的MPE信息。
本发明实施例中的波束也可能是空间关系,参考信号资源、同步信号资源、天线面板(panel)、滤波器、或者准共址信息。
波束可以用参考信号资源、同步信号资源等进行描述。例如,信道状态信息参考信号(Channel State Information Reference Signal,CSI-RS)资源指示信息,探测参考信号(Sounding Reference Signal,SRS)资源指示信息,同步信号块(Synchronization Signal Block,SSB)指示信息。
本公开中以波束举例的都可以扩展到波束组,每个波束可以被波束组代替。波束组中可能包括多个参考信号资源或同步信号资源。
本发明实施例中MPE也可以被PD代替。
MPE与P-MPR存在关联关系。这种关联关系可以用表格描述。例如,MPE值在区间1时,对应P-MPR取值为预定值1;MPE值在区间2时,对应P-MPR取值为预定值2。
UE与基站通信时,使用哪个波束发送上行传输取决于基站的位置,以及周边环境的遮挡、反射等。图4是根据本发明实施例的通过波束进行上行传输的示意图一,如图4所示,UE有多个波束方向分别标记为波束0到波束7。其中波束0是正向对着人体的波束,波束1和波束7的波束方向在发送信号时也会穿过人体,但是由于有一定的倾斜度,因此电磁辐射的影响不如波束0大。如果不考虑电磁辐射对人体的影响,那么所有的波束受限于相同的最大发送功率。例如,23dBm,或者23dBm减去一些功率减少量。这些功率减少量包括MPR,A-MPR,容限等。然而考虑不同波束方向的不同MPE时,P-MPR的值可能差异很大。有的波束方向的P-MPR值很有可能超过其他MPR以及容限值之和,而成为主要决定真实最大发送功率的因素。如图4中,波束0由于P-MPR很大,所以最大发送功率比波束3的低。
示例1上行波束扫描
无线通信系统中,为了测量上行信道,基站通常会让UE发送上行参考信号, 称为SRS(探测参考信号)。在NR系统中,SRS相关的配置是采用SRS资源集合(SRS resource set)和SRS资源(SRS Resource)两级实现的。一个SRS资源通常可以代表一个波束。在一些实现中,也不排除一个SRS资源也可以代表多个同时发送的波束,但是这些使用一个SRS资源发送的多个波束被看作一个波束组,或者一个逻辑上的波束,或者一个虚拟的端口。虚拟的端口到实际物理天线的映射取决于UE的实现。
一个SRS资源集合包括至少一个SRS资源。波束扫描至少要发送一个SRS资源集合中的所有SRS资源。在上行波束扫描过程中,一个SRS资源集合中的所有SRS资源最好使用相同的发送功率,方便接收端对比。因此,功率控制的参数是基于SRS资源集合配置的,适用于SRS资源集合中的所有SRS资源。为保证SRS资源集合中的多个SRS资源的功控参数一致,一个SRS资源集合中的第一个SRS资源发送SRS时所使用的PL被用于该SRS资源集合中的所有SRS资源上发送SRS计算功率。这样可以保证多个SRS资源的需求功率一样。
但是,上行传输的实际发送功率与需求功率和真实最大发送功率都有关。实际的上行波束扫描过程中,可能有的SRS资源的波束朝向人体,因此P-MPR偏大,导致真实最大发送功率偏小,这些波束方向的SRS传输更容易功率受限。
图5是根据本发明实施例的通过波束进行上行传输的示意图二,如图5所示,UE的波束0~7用于上行波束扫描,不同的波束上发送的SRS传输的需求功率都相同,当需求功率比较低时,所有波束都不会功率受限,如图5中PREQ_0。当需求功率较高时,P-MPR大的波束的实际最大发送功率比较低,则比较容易功率受限,如图5中PREQ_1和PREQ_2。
针对同一次波束扫描过程的同一SRS资源集合中的多个SRS资源可能因实际的最大发送功率不同而导致实际的发送功率不同的问题,分析如下:
一种方式是允许占用一个SRS资源集合中的不同SRS资源的SRS以不同的发送功率传输。此时从接收侧基站看,多个SRS信号会存在发送波束的功率不同的可能。而这种发送功率不公平也会以同样的方式影响后续的上行传输。波束扫描后,基站调度上行传输PUSCH时使用SRS资源指示(SRS Resource Indicator,SRI)告知UE的发送波束信息。也就是UE使用发送SRI所指示的SRS传输时相同的发送滤波器发送该PUSCH传输。那么,容易功率受限的SRS资源对应的上行传输也容易功率受限。
需要注意的是,这种发送功率不相同不一定会发生,只会在SRS的需求发送功率超过真实的最大发送功率时才会出现。也就是说,UE对每个SRS传输确定功率,不同SRS可能会因为波束的P-MPR不同导致实际的发送功率不同;也可能因为需求功率低,而没有波束的SRS传输功率受限。
当发生了功率受限时,UE可以不提供波束集合的波束的P-MPR给基站。即,上行波束扫描的SRS中,如果存在P-MPR导致功率受限,则不用上报波束相关的P-MPR。因为上行波束扫描在发送端已经体现了功率差异,接收端基于该有差异的功率进行测量也是合理的。
当没有发生功率受限时,UE需要提供波束集合中波束的P-MPR给基站。
进一步地,波束之间的P-MPR差异大于预定门限才需要上报波束相关的P-MPR。
进一步地,即使有的波束是功率受限的,但是受限的影响非常小,因此多个波束的SRS发送并没有体现出明显的功率差异,则还是会影响接收端的判断。因此,上行波束扫描的几个SRS中,如果有功率受限且超过预定门限的,则不上报波束相关的P-MPR。
另一种方式是尽量保证占用一个SRS资源集合中的不同SRS资源的SRS以相同的发送功率传输。即,当多个SRS资源的发送功率不同时,采用以下之一的方法达到该目的:
方法1:所有SRS资源的发送功率都与发送功率最低的SRS资源保持一致。或者,所有SRS资源的发送功率都用SRS资源集合中最小的真实最大发送功率确定。
方法2:所有SRS资源的发送功率都与发送功率最高的SRS资源保持一致。或者,所有SRS资源的发送功率都用SRS资源集合中最大的真实最大发送功率确定。这样,由于各个波束的P-MPR不同,有的SRS资源可能会超出真实最大发送功率的限制,简称功率超限。
方法3:所有SRS资源的发送功率都与SRS资源集合中的第一个SRS资源的发送功率保持一致。或者,所有SRS资源的发送功率都用SRS资源集合中第一个SRS资源的真实最大发送功率确定。这样,也可能会存在一些波束资源上SRS功率超限。
方法4:所有SRS资源的发送功率都与发送功率为中位的SRS资源保持一致。或者,所有SRS资源的发送功率都用SRS资源集合中处于中位的真实最大发送功率确定。这样,也可能会存在一些波束资源上SRS功率超限。
对于功率超限的情况,UE需要判断使用更高的最大发送功率等级能否满足需求的功率。在UE能力支持的情况下,UE可以使用更高的最大发送功率等级。需要说明的是,即使使用更高的最大发送功率等级,减去一些波束的P-MPR后,实际的最大发送功率等级可能还是不能满足需求功率,那么实际发送功率虽然比原来高,但是还是功率受限的。也就是说,上述方法2、方法3以及方法4, 都还可能存在一个SRS资源集合中的不同SRS资源不能以完全相同的功率发送的可能。
如果要严格限制一个SRS资源集合中的不同SRS资源以完全相同的功率发送,那么对于需求功率大于真实最大发送功率的SRS资源,则不发送SRS。
如果UE改变了(更新了)最大发送功率等级,则需要告知基站更新的最大发送功率等级,由基站根据更新的最大发送功率等级对应的上行传输的占空比确定后续的上行传输。
基站控制后续上行传输的占空比也可能会影响波束扫描的SRS的时域密度。
以上的功率超限主要是因为P-MPR较大,导致真实最大发送功率比较低。实际应用中,还可能因为UE在小区边缘而导致功率受限,也可以采用提升最大发送功率的方式,即以功率超限方式发送,只要限制上行传输的占空比也是可行的。
上行波束训练后,UE将上行发送波束的P-MPR上报给基站,有助于基站选择波束形成上行传输的备选波束集合。
因此,上行波束管理过程可能需要UE告知基站波束相关的MPR信息。
除了上行波束管理过程外,UE还需要实时监视上行备选波束集合,一旦发现MPR信息变化超过门限,则上报基站。上行备选波束集合是指SRS资源集合的用法被设置为codebook based,或non codebook based的SRS资源集合中的所有SRS资源所对应的波束。
以下至少之一条件满足时,UE告知基站波束相关的MPR信息:
属于同一SRS资源集合的SRS资源对应的MPR信息差异大于门限;
属于同一SRS资源集合的SRS资源的SRS传输都没有功率受限;
属于同一SRS资源集合的SRS资源的SRS传输存在功率受限,并且功率受限量小于门限;
当SRS资源集合中有SRS资源的MPR信息变化超过门限。
结合上述方式,即,上行波束管理过程,满足上述相关的条件时,UE需要告知基站波束相关的MPR信息,之后UE需要实施监视上行备选波束集合,一旦发现MPR信息超过门限,则上报基站变化超过门限的波束相关的MPR信息,或者上报SRS资源集合中所有的SRS资源的MPR信息。
波束相关的MPR信息和/或功率超限信息以下面至少之一的方式发送给基站:
UE在CSI报告中携带MPR相关信息和/或更新的最大发送功率等级;
在PHR信息中携带MPR相关信息和/或更新的最大发送功率等级。
示例2下行波束扫描,互易性存在时
下行方向UE的最优接收波束,可能是经过人体方向的。如果简单考虑上下行互易性,使用该下行最优接收波束作为上行发送波束,会因其有较大的P-MPR而使上行传输的发送功率受到较大的限制。
如果基站预知下行方向的最优接收波束备选集合中MPE或者P-MPR相关的信息,那么调度时会考虑该因素并选择最合适的波束,可能会尽量避开朝向人体方向的波束。
因此,UE有必要告知基站关于MPR相关的信息。
下行波束扫描后,UE选择最好的几个链路上报,对应几个波束(组)。UE还上报每个波束(组)的MPR相关信息。或者UE对多个波束上报一个总体的是否有波束的MPR相关超过门限的指示。
进一步地,在互易性成立时,下行波束的反馈信息中才包括MPR相关信息。
互易性包括以下至少之一:上下行互易性,收发互易性。其中,上下行互易性是指根据下行测量波束选择结果与上行方向测量的波束选择结果一致。即上行和下行的波束选择结果可以互相借用,只需要做一个方向,例如,上行的波束选择,另一个方向,例如下行的波束选择就可以借用上行的波束选择结果。收发互易性是指通信的一方,例如UE,在下行方向训练的最好接收波束可以用于上行方向的发送波束,同样的,上行方向的最好发送波束可以用作下行方向的接收波束。
下行波束训练后,UE将上报的波束的P-MPR一起上报给基站,有助于基站选择波束形成上行传输的备选波束。
由以下至少之一确定上报波束相关的MPR信息:
UE上报下行波束训练结果时携带所上报的所有波束相关的MPR信息;
下行波束训练的结果中上报的波束的P-MPR取值大于门限时,上报大于门限的波束相关的MPR信息;
下行波束训练的结果中上报的波束的P-MPR差异大于门限时,上报每个波束相关的MPR信息。
波束相关的MPR信息可以是P-MPR的数值,也可以是预定义的等级。例 如P-MPR分为3个等级,如表1所示。
表1
P-MPR等级 | 表示的P-MPR取值范围 |
0 | [0,3)dB |
1 | [3,6)dB |
2 | [6,9)dB |
3 | >=9dB |
UE在CSI报告中携带波束相关的MPR信息。
示例3上行传输
通过波束管理,基站为UE选择合适的波束或空间关系进行上行传输。例如,下行波束扫描后UE将下行扫描的结果发送给基站,当UE的波束之间存在上下行互易性,基站可以选择合适的下行接收波束用于UE发送上行传输;或者基站配置资源给UE做上行波束管理(扫描),基站根据测量的结果选择合适的上行发送波束用于UE发送上行传输。
当基站调度了朝向人体的波束发送上行传输时,很可能因为P-MPR很大导致真实的最大发送功率较小,而使得上行传输的需求功率不能被满足。如果以该受限的功率发送上行传输,可能因为接收功率太低而不能正确解码,浪费了宝贵的资源。为解决该问题,有以下几种方案:
方案1:允许UE提升最大发送功率等级,进而提升真实的最大发送功率,并附加上行占空比的限制。
UE需要告知基站其提升了最大发送功率,以使基站在后续调度过程中使用与提升的最大发送功率相匹配的上行占空比限制。
UE通过以下方式通知基站:
方式1:UE告知基站最大发送功率信息。
方式2:UE告知基站关于提升或降低的最大发送功率所对应的时长占比信息。
当UE的上行传输的需求功率受限,而该UE还支持比当前最大发送功率等级更高的功率等级时,UE可以提高至少一级。
例如:UE支持最大发送功率等级0为23dBm,还支持最大发送功率等级1 为26dBm。当UE工作在正常模式,即最大发送功率等级0。如果P-MPR为10dB,其他MPR等因素为3dB,则真实的最大发送功率限制为13dBm。而对某一上行传输,如果UE的需求功率小于或等于13dBm,则最大发送功率等级0就可以满足。如果UE的需求功率为16dBm,则UE需要提升到最大发送功率等级1,真实的最大发送功率限制提高了3dB,为16dBm。这样,UE的需求功率刚好可以被满足。假如UE的需求功率是18dBm,则即使UE提升到最大发送功率等级1,UE的传输还是功率受限的。
又如:UE支持最大发送功率等级0为23dBm,还支持最大发送功率等级1为26dBm,最大发送功率等级2为29dBm。当UE工作在正常模式,即最大发送功率等级0。如果P-MPR为10dB,其他MPR等因素为3dB,则真实的最大发送功率限制为13dBm。如果UE的需求功率为18dBm,则UE升高一级最大发送功率等级时真实的最大发送功率限制为16dBm,还是不能满足。因此UE可以提高到最大发送功率等级2,此时,UE的传输功率就不受限了。
不同的最大发送功率等级对应不同的上行占空比。例如,最大发送功率等级0对应的上行占空比为100%,即上行在时域上的比例可以不受限制;最大发送功率等级1对应的上行占空比为50%,即上行在时域上的比例不能超过50%;最大发送功率等级2对应的上行占空比为20%,即上行在时域上的比例不能超过20%。
上述描述了UE提升最大发送功率的需求,而当需求功率降低,使用较低的最大发送功率等级功率不受限时,UE需要降低最大放功率等级。
当UE发现当前传输的需求功率比当前的真实最大发送功率限制小,或者小得超过了预定门限,则降低一级或者多级的最大发送功率等级,找到满足功率不受限的最低的最大发送功率等级。降低最大发送功率等级后使用对应的上行占空比。
该最大发送功率等级回退机制,适用于信道条件变好,PL变小,波束的MPE/P-MPR变小等,总之,需求功率变小了,并且可以使用更低等级的最大发送功率。
上面描述的是当上行传输的功率受限UE需要提升最大发送功率等级,相应地需要告知基站用于限制后续的上行占空比,或者上行传输的功率不受限,UE还可以降低最大发送功率等级,也需要告知基站用于放松的上行占空比,或者取消上行占空比限制。
UE还需要监控当前传输的功率参数,或者待选波束的功率参数,当以下条件至少之一满足时,上报P-MPR或者PHR给基站:
当前传输的真实最大发送功率的变化超过门限;
当前传输的P-MPR的变化超过门限;
备选波束的P-MPR的变化超过门限;
UE在信道状态信息CSI报告中携带上报的P-MPR或者PHR信息;
UE在PHR报告中携带上报的P-MPR。
另外,允许UE提高最大发送功率,UE也可以不明确告知基站。即如果基站为UE调度了或者分配了上行传输资源,但是UE发现如果发送了该上行传输,则上行的传输时间占比就会超过提高后的最大发送功率对应的上行占空比,则UE发送该上行传输。
UE在上报了有关升高或者降低最大发送功率给基站后,收到基站的响应信息前,UE自己控制其上行传输的占空比不超过限制。
以上场景中,由于面向人体的波束的P-MPR大而导致最大发送功率较低,而导致功率受限,解决方案是突破当前的最大发送功率限制,提升到更高的最大发送功率等级。如果UE支持这种能力,应用场景也可以扩展为不限于因为P-MPR大而导致的功率受限问题。例如,因为其他原因导致功率受限,如小区边缘的UE功率受限,也可以使用上述提高最大发送功率的方式。
方案2:UE告知基站各个波束的P-MPR,基站可以预知各波束的差异,在朝向人体波束与非朝向人体波束的差异不太大的情况下,尽量避免调度朝向人体的波束。
如果基站知道备选集合中上行波束的P-MPR,那么结合PHR的值,对调度会有所帮助。具体的,当PL比较大,PHR接近0时,P-MPR大的上行发送波束的天花板会很明显,P-MPR小的波束则会好一些。
另外,基站还需评估,不考虑波束之间的发送功率触顶情况,即满足需求功率的情况下即可以认为发送功率基本一样,性能差别如信号与干扰噪声比(Signal to Interference plus Noise Ratio,SINR)的大小,与考虑触顶情况,不同上行发送波束收到功率限制的情况不同后,预期会导致的SINR的差异。
从调度角度看,不同的波束功率上限差异可能很大,如果上行波束扫描已经有所体现,对调度而言是比较准确的。如果上行波束扫描没有体现这种差异,而实际的传输需要的功率比SRS大,则可能会遇到功率瓶颈。
例如,两个上行波束发送SRS时,没有遇到功率瓶颈,以同样的功率发送,到接收端差别不太大,可能人体方向的波束稍微好一些而被选中,就很容易功率受限。
如果基站还得知UE的不同发送波束的P-MPR,则调度器就可以结合PHR判断。
如果虚拟PHR已经比较小,则P-MPR大的波束应该避免被调度,或者说在预估不同波束的接收质量时,人体方向的波束的加权值应该设置得比较小。
如果是真实PHR,则可能是P-MPR为主,也可能其他MPR为主,UE需要告知基站真实PHR是否P-MPR为主。
如果是P-MPR为主,并且基站知道其他波束的P-MPR比当前的波束的P-MPR小,则有可能换波束调度,或者继续使用当前波束,但是使用提升功率的方式。如果其他波束的P-MPR也差不多,则没有必要换波束调度,只能继续使用当前波束,并提升最大发送功率等级以及增加占空比约束。
如果UE已经为一个上行传输提升了功率等级,并启用了上行占空比约束,基站又换了新的波束调度。
UE判断新的波束上的传输是否功率受限,如果不受限,UE进一步判断是否可以回退到更低的最大发送功率等级。如果还是受限,UE进一步判断是否需要进一步提升最大发送功率等级,或者维持当前的最大发送功率等级。
如果更新了最大功率等级,则UE需要告知基站更新的最大功率等级,和/或更新的最大功率等级对应的上行占空比。由基站控制上行调度符合更新前后的上行占空比要求。
或者,如果更新了最大功率等级,则UE自己控制实际的上行传输符合前后的上行占空比要求。
本文中以上报波束级别的P-MPR为例说明基站需要知道UE的波束相关的MPE或PD情况。具体应用中,P-MPR信息也可以被以下信息代替:实际最大发送功率信息、PHR信息。
示例4
如果是因为波束的P-MPR大于门限导致降低上行占空比,那么应该主要针对朝向人体的波束beam,且远近距离也会影响P-MPR。如果使用非朝向人体的beam,或者离人体较远,则应该不受影响。如果UE只是告知基站当前的传输做了功率提升,而没有告知具体的波束相关的P-MPR值,那么对上行占空比的限制应该主要针对相同的波束资源,即使用相同的空间关系,或者使用与原来传输的空间关系具有准共址(Quasi co-location,QCL)关系的空间关系调用的传输。
如果基站换发送资源进行调度,尤其是波束资源,则可能不会受时域的上 行占空比的影响。如果新换的波束资源为非朝向人体的波束,对应的P-MPR应该比较小。当UE判断可以回退到比较低的最大发送功率等级,则UE告知基站对应的最大发送功率等级信息,或者直接告知基站与较低的最大发送功率等级匹配的上行占空比,基站接收到新的最大发送功率等级或者上行占空比,则用新的占空比约束新的调度。
采用以下至少之一确定上行占空比的作用时间:
上行占空比从改变最大发送功率等级的时刻开始,延续至少一个预定义的时间段;例如,10ms,或者5ms,或者多个子帧等;
上行占空比从改变最大发送功率等级的时刻开始,直到上行占空比被更新;
如果新的占空比比原来的占空比更严格,则新的占空比可以直接生效;如果新的占空比比原来的占空比更放松,则新的占空比生效时间在原来的占空比生效时间之后至少一个预定义的时间段;
所述新的占空比比原来的占空比更严格是指新的占空比取值比原来的占空比取值小。例如,原来的占空比是100%,新的占空比是50%;
所述新的占空比比原来的占空比更放松是指,新的占空比取值比原来的占空比取值大。例如,原来的占空比是50%,新的占空比是100%;
例如,在t0时刻,UE发现当前最大发送功率等级的23dBm所确定的真实最大发送功率不足,于是决定提升最大发送功率等级到26dBm,并发送相应信息给基站。假设23dBm对应的上行功率占空比为100%,即不受约束,26dBm对应的上行功率占空比为50%。在基站收到UE提升最大发送功率到26dBm之后,基站为UE确定上行占空比为50%。
在t0时刻之后的t1时刻,基站更新了调度资源调度UE发送新的上行传输,更新的调度资源对应新的波束资源,其P-MPR很低,UE发现使用23dBm的最大发送功率等级也功率不受限,于是在t1时刻告知基站调整最大发送功率等级到23dBm。基站收到该信息后,应该将UE的上行占空比调整为100%,即上行占空比不受约束。
基站采用以下方式之一改变UE的上行占空比的时刻:
上行占空比从改变最大发送功率等级的时刻开始,延续至少一个预定义的时间段,例如10ms,则从t0时刻开始的10ms内,上行占空比都不能超过50%。如果t0到t1的时间差小于10ms,则放松占空比到100%需要到t0+10ms之后。如果t0到t1的时间差大于或等于10ms,则放松占空比到100%可以在t1时刻。
或者,上行占空比从改变最大发送功率等级的时刻开始,直到上行占空比 被更新。不需要考虑持续一个预定的时间段,则在t1时刻就可以更新占空比到100%。
或者,UE并不告知基站最大发送功率等级调整的信息,自己使用对应于最大发送功率等级的上行占空比控制实际发送的上行传输的占空比。
示例5
如果UE功率受限时,UE可以不按调度信息(包含在授权信息grant中)的方式,而是用预定义的调度方式。即,功率受限时,UE采用以下方式至少之一使得需求功率降低:
降低MCS;例如,调度的MCS为MCS 7,降低为MCS 6。
降低速率;例如,调度的速率为3/4,减低为1/2。
降低调制阶数;例如,调度的调制阶数为4,即16正交振幅调制(Quadrature Amplitude Modulation,QAM),降低为2,即正交相移键控(Quadrature Phase Shift Keying,QPSK)。
使用固定的MCS或者调制阶数;例如,最低的MCS,UE支持的最低的调制阶数等。
减少调度的带宽;例如,带宽减小为调度带宽的1/2,带宽减小为调度带宽的1/3等。
基站作为上行传输的接收端,则要进行盲检。即按照grant信息中的调度方式解码,如果解不对,则需要尝试上述预定义的调度方式进行解码,直到解对,或者所有的可能都尝试完也没有解对,则认定解错。
示例6
虚拟PHR是按照P-MPR为0算的,对于备选波束中P-MPR差异很大的场景,最好基站能知道各个波束的P-MPR。
因此,上报虚拟PHR时,如果备选波束的P-MPR差异超过门限,则UE还需要上报备选波束的P-MPR。UE可以上报所有的备选波束的P-MPR等级,也可以上报备选波束中最大的若干个波束及其对应的P-MPR。
示例7
多个beam同时使用时,面对人体的方向因为P-MPR较大,所以功率限制 为一个比较低的值;其他方向的功率限制则为一个比较高的值。多个波束同时发送的场景,应该满足以下条件:
各个波束方向的传输不超过各自方向的真实最大发送功率;
各个波束方向的传输的功率之和不大于各个方向的真实最大发送功率中的最大的真实最大发送功率。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现,也可以通过硬件实现。基于这样的理解,本公开的技术方案本质上可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,或者网络设备等)执行本公开各个实施例所述的方法。
实施例5
在本实施例中还提供了一种功率控制装置,该装置用于实现上述实施例及可选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
图6是根据本发明实施例的功率控制装置的框图一,如图6所示,包括:
第一确定模块62,用于确定一个或多个最大发送功率相关信息;
第一发送模块64,用于将所述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关。
可选地,所述最大发送功率相关信息包括以下至少之一:
功率管理最大功率降低P-MPR信息;
实际最大发送功率信息;
功率余量PHR信息。
可选地,若所述最大发送功率相关信息是基于真实传输的,所述第一确定模块62,用于执行以下至少之一:
根据最大发送功率相关信息对应的波束或波束分组确定波束或波束分组相关的所述P-MPR信息;
根据所述真实传输的参数确定其他最大功率降低MPR,根据所述其他MPR以及所述波束或波束分组相关的所述P-MPR信息确定波束或波束分组相关的所 述实际最大发送功率信息;
根据所述真实传输的参数确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定波束或波束分组相关的所述PHR信息;
根据所述真实传输的参数、所述最大发送功率相关信息对应的波束或波束分组确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定波束或波束分组相关的所述PHR信息。
可选地,若所述最大发送功率相关信息是基于虚拟传输时,所述第一确定模块62,用于执行以下至少之一:
根据所述最大发送功率相关信息对应的波束或波束分组确定所述波束或波束分组相关的所述P-MPR信息;
根据所述虚拟传输的参数确定其他最大功率降低MPR,并根据所述其他MPR以及所述波束或波束分组相关的所述P-MPR信息确定所述波束或波束分组相关的所述实际最大发送功率信息;
根据所述虚拟传输的参数确定需求功率,并根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定所述波束或波束分组相关的所述功率余量信息;
根据所述虚拟传输的参数、所述最大发送功率相关信息对应的波束或波束分组确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定所述波束或波束分组相关的所述PHR信息。
可选地,所述最大发送功率相关信息与预定波束集合内所有或部分的波束或波束分组相关。
可选地,所述预定波束集合包括以下之一:
上行发送波束备选集合;
探测参考信息SRS资源集合中的SRS资源;
用途为基于码本的传输的SRS资源集合中的SRS资源;
用途为基于非码本的传输的SRS资源集合中的SRS资源;
用途为波束管理的SRS资源集合中的SRS资源;
为物理上行控制信道PUCCH配置的空间关系集合。
可选地,所述预定波束集合内部分的波束或波束分组包括以下至少之一:
所述预定波束集合内最大发送功率相关信息值大于第一预定阈值的波束或 者波束组;
所述预定波束集合内最大发送功率相关信息值最大的预定个数的波束或者波束组;
所述预定波束集合内最大发送功率相关信息值的变化大于第二预定阈值的波束或者波束组。
可选地,所述最大发送功率相关信息与波束相关包括以下之一:
每个最大发送功率相关信息都对应一个发送波束;
每个最大发送功率相关信息都对应基准发送波束的最大发送功率相关信息与其他发送波束的最大发送功率相关信息之差;
一个最大发送功率相关信息对应基准发送波束,其余的最大发送功率相关信息是基准发送波束的最大发送功率相关信息与其他发送波束的最大发送功率相关信息之差。
可选地,在满足以下条件至少之一时,确定一个或多个所述最大发送功率相关信息:
所述预定波束集合内波束或波束组之间的所述最大发送功率相关信息的差值大于第三预定阈值;
所述预定波束集合内波束或波束组的所述最大发送功率相关信息的变化量超过第四预定阈值;
当前传输的参数确定的所述最大发送功率相关信息的值超过第五预定阈值
当前传输的参数确定的所述最大发送功率相关信息的变化量超过第六预定阈值。
可选地,所述第一发送模块64,还用于:
将所述最大发送功率相关信息携带在CSI报告或功率余量PHR信息中发送给所述第一通信节点。
可选地,所述波束包括以下之一:空间关系、参考信号资源、同步信号资源、天线端口、天线面板、滤波器、准共址信息。
实施例6
本发明实施例还提供了一种功率控制装置,图7是根据本发明实施例的功率控制装置的框图二,如图7所示,包括:
第二确定模块72,用于确定上行传输的需求功率和实际最大发送功率;
第三确定模块74,用于根据所述需求功率和所述实际最大发送功率确定所述最大发送功率相关信息;
第二发送模块76,用于将所述最大发送功率相关信息发送给第一通信节点。
可选地,所述装置还包括:
调节模块,用于根据所述需求功率和所述实际最大发送功率对上行传输的功率进行调节。
可选地,所述调节模块,还用于
在满足以下条件至少之一时,通过提升功率等级的方式对上行传输的功率进行调节:
所述需求功率高于所述实际最大发送功率;
当前的功率等级不是最高功率等级;
所述实际最大发送功率是由功率管理最大功率降低P-MPR确定的;
确定所述实际最大发送功率的P-MPR高于第一预设值;
确定所述实际最大发送功率的P-MPR比确定所述实际最大发送功率的其他最大功率降低MPR项之和高第二预设值。
可选地,所述装置还包括:
提升模块,用于在满足以下条件至少之一时,提升所述功率等级作为所述最大发送功率相关信息:
所述需求功率高于所述实际最大发送功率;
当前的功率等级不是最高功率等级;
所述实际最大发送功率是由功率管理最大功率降低P-MPR确定的;
确定所述实际最大发送功率的P-MPR高于第一预设值;
确定所述实际最大发送功率的P-MPR比确定所述实际最大发送功率的其他最大功率降低MPR项之和高第二预设值。
可选地,所述装置还包括:
降低模块,用于在满足以下条件至少之一时,降低所述功率等级作为最大发送功率相关信息:
当前的功率等级不是最低功率等级;
所述需求功率低于比当前功率等级低的功率等级对应的实际最大发送功率;
所述需求功率与比当前功率等级低的功率等级对应的实际最大发送功率之间相差大于第三预设值。
可选地,所述第二发送模块76,还用于
将所述最大发送功率相关信息在携带在PHR信息或MAC CE中发送给所述第一通信节点;或者
将所述最大发送功率相关信息承载在以上行链路控制信息UCI的形式在PUCCH或PUSCH中发送给所述第一通信节点。
可选地,所述最大发送功率相关信息包括以下之一:
功率等级信息;
时长占比信息。
可选地,所述功率等级信息与所述时长占比信息有预定义的关联关系。
可选地,所述装置还包括:生效模块,用于执行以下至少之一:
时长占比从当前传输开始生效,延续至少一个预定义时间段;
时长占比从当前传输开始生效,直到所述时长占比被新的时长占比更新;
如果新的第二时长占比比之前的第一时长占比小,所述第二时长占比直接生效;
如果所述第二时长占比比所述第一时长占比大,所述第二时长占比在所述第一时长占比的生效时间之后至少一个预定义时间生效。
实施例7
本发明实施例还提供了一种功率控制装置,应用于第一通信节点,包括:
第一接收模块,用于接收第二通信节点发送的最大发送功率相关信息,其中,所述最大发送功率相关信息与波束或波束分组相关。
可选地,所述最大发送功率相关信息包括以下至少之一:
功率管理最大功率降低P-MPR信息;
实际最大发送功率信息;
功率余量PHR信息。
可选地,所述最大发送功率相关信息与预定波束集合内所有或部分的波束或波束分组相关。
可选地,所述预定波束集合包括以下之一:
上行发送波束备选集合;
探测参考信息SRS资源集合中的SRS资源;
用途为基于码本的传输的SRS资源集合中的SRS资源;
用途为基于非码本的传输的SRS资源集合中的SRS资源;
用途为波束管理的SRS资源集合中的SRS资源;
为物理上行控制信道PUCCH配置的空间关系集合。
可选地,所述预定波束集合内部分的波束或波束分组包括以下至少之一:
所述预定波束集合内最大发送功率相关信息值大于第一预定阈值的波束或者波束组;
所述预定波束集合内最大发送功率相关信息值最大的预定个数的波束或者波束组;
所述预定波束集合内最大发送功率相关信息值的变化大于第二预定阈值的波束或者波束组。
可选地,所述最大发送功率相关信息与波束相关包括以下之一:
每个最大发送功率相关信息都对应一个发送波束;
每个最大发送功率相关信息都对应基准发送波束的最大发送功率相关信息与其他发送波束的最大发送功率相关信息之差;
一个最大发送功率相关信息对应基准发送波束,其余的最大发送功率相关信息是基准发送波束的最大发送功率相关信息与其他发送波束的最大发送功率相关信息之差。
实施例8
本发明实施例还公开了一种功率控制装置,应用于第一通信节点,包括:
第二接收模块,用于接收第二通信节点发送的最大发送功率相关信息。
可选地,所述最大发送功率相关信息包括以下之一:
功率等级信息;
时长占比信息。
可选地,所述功率等级信息与所述时长占比信息有预定义的关联关系。
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下方式实现,但不限于此:上述模块均位于同一处理器中;或者,上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例9
本公开的实施例还提供了一种存储介质,该存储介质中存储有计算机程序,其中,该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地,在本实施例中,上述存储介质可以被设置为存储用于执行以下步骤的计算机程序:
S11,确定一个或多个最大发送功率相关信息。
S12,将所述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关。
可选地,在本实施例中,上述存储介质还可以被设置为存储用于执行以下步骤的计算机程序:
S21,确定上行传输的需求功率和实际最大发送功率。
S22,根据所述需求功率和所述实际最大发送功率确定所述最大发送功率相关信息。
S23,将所述最大发送功率相关信息发送给第一通信节点。
可选地,在本实施例中,上述存储介质还可以被设置为存储用于执行以下步骤的计算机程序:
S31,接收第二通信节点发送的最大发送功率相关信息,其中,所述最大发送功率相关信息与波束或波束分组相关。
可选地,在本实施例中,上述存储介质还可以被设置为存储用于执行以下步骤的计算机程序:
S41,接收第二通信节点发送的最大发送功率相关信息。
可选地,在本实施例中,上述存储介质可以包括但不限于:通用串行总线闪存盘(Universal Serial Bus flash disk,U盘)、只读存储器(Read-Only Memory,简称为ROM)、随机存取存储器(Random Access Memory,简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
实施例10
本公开的实施例还提供了一种电子装置,包括存储器和处理器,该存储器中存储有计算机程序,该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
可选地,上述电子装置还可以包括传输设备以及输入输出设备,其中,该传输设备和上述处理器连接,该输入输出设备和上述处理器连接。
可选地,在本实施例中,上述处理器可以被设置为通过计算机程序执行以下步骤:
S11,确定一个或多个最大发送功率相关信息。
S12,将所述最大发送功率相关信息发送给第一通信节点,其中,所述最大发送功率相关信息与波束或波束分组相关。
可选地,在本实施例中,上述处理器还可以被设置为通过计算机程序执行以下步骤:
S21,确定上行传输的需求功率和实际最大发送功率。
S22,根据所述需求功率和所述实际最大发送功率确定所述最大发送功率相关信息。
S23,将所述最大发送功率相关信息发送给第一通信节点。
可选地,在本实施例中,上述处理器还可以被设置为通过计算机程序执行以下步骤:
S31,接收第二通信节点发送的最大发送功率相关信息,其中,所述最大发送功率相关信息与波束或波束分组相关。
可选地,在本实施例中,上述处理器还可以被设置为通过计算机程序执行以下步骤:
S41,接收第二通信节点发送的最大发送功率相关信息。
可选地,本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例,本实施例在此不再赘述。
显然,本领域的技术人员应该明白,上述的本公开的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些 情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本公开不限制于任何特定的硬件和软件结合。
Claims (36)
- 一种功率控制方法,包括:确定至少一个最大发送功率相关信息;将所述至少一个最大发送功率相关信息发送给第一通信节点,其中,所述至少一个最大发送功率相关信息与波束或波束分组相关。
- 根据权利要求1所述的方法,其中,所述最大发送功率相关信息包括以下至少之一:功率管理最大功率降低P-MPR信息;实际最大发送功率信息;功率余量PHR信息。
- 根据权利要求2所述的方法,其中,所述最大发送功率相关信息根据以下至少之一确定:传输参数;所述最大发送功率相关信息对应的波束或波束分组的所述P-MPR信息。
- 根据权利要求2所述的方法,其中,在所述最大发送功率相关信息是基于真实传输的情况下,确定所述至少一个最大发送功率相关信息包括以下至少之一:根据所述至少一个最大发送功率相关信息对应的波束或波束分组确定波束或波束分组相关的所述P-MPR信息;根据所述真实传输的参数确定除P-MPR量以外的其他最大功率降低MPR量,根据所述其他MPR量以及所述波束或波束分组相关的所述P-MPR信息确定波束或波束分组相关的所述实际最大发送功率信息;根据所述真实传输的参数确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定波束或波束分组相关的所述PHR信息;根据所述真实传输的参数、所述至少一个最大发送功率相关信息对应的波束或波束分组确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定波束或波束分组相关的所述PHR信息。
- 根据权利要求2所述的方法,其中,在所述最大发送功率相关信息是基于虚拟传输的情况下,确定所述至少一个最大发送功率相关信息包括以下至少之一:根据所述至少一个最大发送功率相关信息对应的波束或波束分组确定所述 波束或波束分组相关的所述P-MPR信息;根据所述虚拟传输的参数确定除P-MPR量以外的其他最大功率降低MPR量,并根据所述其他MPR量以及所述波束或波束分组相关的所述P-MPR信息确定所述波束或波束分组相关的所述实际最大发送功率信息;根据所述虚拟传输的参数确定需求功率,并根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定所述波束或波束分组相关的所述功率余量信息;根据所述虚拟传输的参数、所述最大发送功率相关信息对应的波束或波束分组确定需求功率,根据所述需求功率以及所述波束或波束分组相关的所述实际最大发送功率信息确定所述波束或波束分组相关的所述PHR信息。
- 根据权利要求1所述的方法,其中,所述最大发送功率相关信息与预定波束集合内所有或部分的波束或波束分组相关。
- 根据权利要求6所述的方法,其中,所述预定波束集合包括以下之一:上行发送波束备选集合;探测参考信号SRS资源集合中的SRS资源;用途为基于码本的传输的SRS资源集合中的SRS资源;用途为基于非码本的传输的SRS资源集合中的SRS资源;用途为波束管理的SRS资源集合中的SRS资源;为物理上行控制信道PUCCH配置的空间关系集合。
- 根据权利要求6所述的方法,其中,所述预定波束集合内部分的波束或波束分组包括以下至少之一:所述预定波束集合内最大发送功率相关信息值大于第一预定阈值的波束或者波束组;所述预定波束集合内最大发送功率相关信息值最大的预定个数的波束或者波束组;所述预定波束集合内最大发送功率相关信息值的变化量大于第二预定阈值的波束或者波束组。
- 根据权利要求6所述的方法,其中,所述最大发送功率相关信息与波束相关包括以下之一:每个最大发送功率相关信息都对应一个发送波束;每个最大发送功率相关信息都对应基准发送波束的最大发送功率相关信息与除基准发送波束之外的其他发送波束的最大发送功率相关信息之差;一个最大发送功率相关信息对应基准发送波束,除所述最大发送功率相关信息之外的其余的最大发送功率相关信息是基准发送波束的最大发送功率相关信息与除基准发送波束之外的其他发送波束的最大发送功率相关信息之差。
- 根据权利要求6所述的方法,其中,在满足以下条件至少之一的情况下,确定所述至少一个最大发送功率相关信息:所述预定波束集合内波束或波束分组之间的所述最大发送功率相关信息的差值大于第三预定阈值;所述预定波束集合内波束或波束分组的所述最大发送功率相关信息的变化量超过第四预定阈值;当前传输的参数确定的所述最大发送功率相关信息的值超过第五预定阈值;当前传输的参数确定的所述最大发送功率相关信息的变化量超过第六预定阈值。
- 根据权利要求1所述的方法,其中,所述将所述至少一个最大发送功率相关信息发送给所述第一通信节点,包括:将所述最大发送功率相关信息携带在信道状态信息CSI报告或PHR信息中发送给所述第一通信节点。
- 根据权利要求1至11中任一项所述的方法,其中,所述波束包括以下之一:空间关系、参考信号资源、同步信号资源、天线端口、天线面板、滤波器、准共址信息。
- 一种功率控制方法,包括:确定上行传输的需求功率和实际最大发送功率;根据所述需求功率和所述实际最大发送功率确定最大发送功率相关信息;将所述最大发送功率相关信息发送给第一通信节点。
- 根据权利要求13所述的方法,还包括:根据所述需求功率和所述实际最大发送功率对上行传输的功率进行调节。
- 根据权利要求14所述的方法,其中,所述根据所述需求功率和所述实际最大发送功率对上行传输的功率进行调节,包括:在满足以下条件至少之一的情况下,通过提升功率等级的方式对所述上行传输的功率进行调节:所述需求功率大于所述实际最大发送功率;当前的功率等级不是最高功率等级;所述实际最大发送功率是由功率管理最大功率降低P-MPR信息确定的;确定所述实际最大发送功率的P-MPR信息大于第一预设值;确定所述实际最大发送功率的P-MPR信息比确定所述实际最大发送功率的除P-MPR信息之外的其他最大功率降低MPR项之和高第二预设值。
- 根据权利要求13所述的方法,还包括:在满足以下条件至少之一的情况下,提升功率等级,并将提升的功率等级作为所述最大发送功率相关信息:所述需求功率大于所述实际最大发送功率;当前的功率等级不是最高功率等级;所述实际最大发送功率是由P-MPR信息确定的;确定所述实际最大发送功率的P-MPR信息大于第一预设值;确定所述实际最大发送功率的P-MPR信息比确定所述实际最大发送功率的除P-MPR信息之外的其他最大功率降低MPR项之和高第二预设值。
- 根据权利要求13所述的方法,还包括:在满足以下条件至少之一的情况下,降低功率等级,并将降低的功率等级作为最大发送功率相关信息:当前的功率等级不是最低功率等级;所述需求功率低于比当前功率等级低的功率等级对应的实际最大发送功率;所述需求功率与比当前功率等级低的功率等级对应的实际最大发送功率之间相差大于第三预设值。
- 根据权利要求13所述的方法,其中,所述将所述最大发送功率相关信息发送给所述第一通信节点,包括:将所述最大发送功率相关信息携带在功率余量PHR信息或媒体接入控制控制元素MAC CE中发送给所述第一通信节点;或者将所述最大发送功率相关信息承载在以上行链路控制信息UCI的形式在物 理上行链路控制信道PUCCH或物理上行共享信道PUSCH中发送给所述第一通信节点。
- 根据权利要求13至18中任一项所述的方法,其中,所述最大发送功率相关信息包括以下之一:功率等级信息;时长占比信息。
- 根据权利要求19所述的方法,其中,所述功率等级信息与所述时长占比信息有预定义的关联关系。
- 根据权利要求19所述的方法,还包括以下至少之一:时长占比从当前传输开始生效,延续至少一个预定义时间段;时长占比从当前传输开始生效,直到所述时长占比被新的时长占比更新;在新的第二时长占比比之前的第一时长占比小的情况下,所述第二时长占比直接生效;在所述第二时长占比比所述第一时长占比大的情况下,所述第二时长占比在所述第一时长占比的生效时间之后的至少一个预定义时间生效。
- 一种功率控制方法,包括:接收第二通信节点发送的最大发送功率相关信息,其中,所述最大发送功率相关信息与波束或波束分组相关。
- 根据权利要求22所述的方法,其中,所述最大发送功率相关信息包括以下至少之一:功率管理最大功率降低P-MPR信息;实际最大发送功率信息;功率余量PHR信息。
- 根据权利要求22或23所述的方法,其中,所述最大发送功率相关信息与预定波束集合内所有或部分的波束或波束分组相关。
- 根据权利要求24所述的方法,其中,所述预定波束集合包括以下之一:上行发送波束备选集合;探测参考信号SRS资源集合中的SRS资源;用途为基于码本的传输的SRS资源集合中的SRS资源;用途为基于非码本的传输的SRS资源集合中的SRS资源;用途为波束管理的SRS资源集合中的SRS资源;为物理上行控制信道PUCCH配置的空间关系集合。
- 根据权利要求24所述的方法,其中,所述预定波束集合内部分的波束或波束分组包括以下至少之一:所述预定波束集合内最大发送功率相关信息值大于第一预定阈值的波束或者波束组;所述预定波束集合内最大发送功率相关信息值最大的预定个数的波束或者波束组;所述预定波束集合内最大发送功率相关信息值的变化量大于第二预定阈值的波束或者波束组。
- 根据权利要求24所述的方法,其中,所述最大发送功率相关信息与波束相关包括以下之一:每个最大发送功率相关信息都对应一个发送波束;每个最大发送功率相关信息都对应基准发送波束的最大发送功率相关信息与除基准发送波束之外的其他发送波束的最大发送功率相关信息之差;一个最大发送功率相关信息对应基准发送波束,除所述最大发送功率相关信息之外的其余的最大发送功率相关信息是基准发送波束的最大发送功率相关信息与除基准发送波束之外的其他发送波束的最大发送功率相关信息之差。
- 一种功率控制方法,包括:接收第二通信节点发送的最大发送功率相关信息。
- 根据权利要求28所述的方法,其中,所述最大发送功率相关信息包括以下之一:功率等级信息;时长占比信息。
- 根据权利要求29所述的方法,其中,所述功率等级信息与所述时长占比信息有预定义的关联关系。
- 一种功率控制装置,包括:第一确定模块,设置为确定至少一个最大发送功率相关信息;第一发送模块,设置为将所述至少一个最大发送功率相关信息发送给第一 通信节点,其中,所述至少一个最大发送功率相关信息与波束或波束分组相关。
- 一种功率控制装置,包括:第二确定模块,设置为确定上行传输的需求功率和实际最大发送功率;第三确定模块,设置为根据所述需求功率和所述实际最大发送功率确定最大发送功率相关信息;第二发送模块,设置为将所述最大发送功率相关信息发送给第一通信节点。
- 一种功率控制装置,包括:第一接收模块,设置为接收第二通信节点发送的最大发送功率相关信息,其中,所述最大发送功率相关信息与波束或波束分组相关。
- 一种功率控制装置,包括:第二接收模块,设置为接收第二通信节点发送的最大发送功率相关信息。
- 一种存储介质,所述存储介质中存储有计算机程序,其中,所述计算机程序被设置为运行时执行所述权利要求1至12、13至21、22至27、28至30任一项中所述的功率控制方法。
- 一种电子装置,包括存储器和处理器,所述存储器中存储有计算机程序,所述处理器被设置为运行所述计算机程序以执行所述权利要求1至12、13至21、22至27、28至30任一项中所述的功率控制方法。
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EP4275425A4 (en) * | 2021-01-07 | 2024-10-02 | Nokia Technologies Oy | BEAM MANAGEMENT FOR A DEVICE IN AN INACTIVE MODE |
CN115150903A (zh) * | 2021-03-30 | 2022-10-04 | 维沃移动通信有限公司 | 波束切换方法、装置及存储介质 |
CN115150903B (zh) * | 2021-03-30 | 2024-06-21 | 维沃移动通信有限公司 | 波束切换方法、装置及存储介质 |
EP4285651A4 (en) * | 2021-05-11 | 2024-07-31 | Zte Corp | SYSTEMS AND METHODS FOR REPORTING POWER-RELATED INFORMATION |
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Also Published As
Publication number | Publication date |
---|---|
CN111436105B (zh) | 2023-11-21 |
US11985608B2 (en) | 2024-05-14 |
US20220116891A1 (en) | 2022-04-14 |
EP3911034A4 (en) | 2022-10-19 |
EP3911034A1 (en) | 2021-11-17 |
CN111436105A (zh) | 2020-07-21 |
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