WO2019096316A1 - Procédé et dispositif de communication, et système - Google Patents

Procédé et dispositif de communication, et système Download PDF

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Publication number
WO2019096316A1
WO2019096316A1 PCT/CN2018/116271 CN2018116271W WO2019096316A1 WO 2019096316 A1 WO2019096316 A1 WO 2019096316A1 CN 2018116271 W CN2018116271 W CN 2018116271W WO 2019096316 A1 WO2019096316 A1 WO 2019096316A1
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WIPO (PCT)
Prior art keywords
parameter
power
information
power control
carrier
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PCT/CN2018/116271
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English (en)
Chinese (zh)
Inventor
纪刘榴
李元杰
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201810152266.6A external-priority patent/CN109803363B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18879324.4A priority Critical patent/EP3713311A4/fr
Priority to CN201880051777.7A priority patent/CN111386734B/zh
Priority to US16/765,123 priority patent/US11516754B2/en
Publication of WO2019096316A1 publication Critical patent/WO2019096316A1/fr

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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

Definitions

  • the present application relates to the field of wireless communications and, more particularly, to communication methods, communication devices and systems.
  • Massive multiple-input multiple-output can further increase system capacity by utilizing more spatial degrees of freedom, becoming a new radio access technology (NR).
  • NR radio access technology
  • NR beam-based transmission has become a major focus.
  • the configuration of the large-scale antenna array enables a higher resolution beam to be formed in the NR.
  • the present application provides a communication method, communication device and system for the purpose of power control or power headroom reporting in a multi-beam system.
  • a communication method comprising:
  • first indication information where the first indication information indicates at least two first parameters; and the at least two first parameters are used to determine uplink data channel power, uplink control channel power, or uplink reference signal power when dynamically scheduling At least one of them;
  • the second parameter is a nominal power, a path loss adjustment factor, a path loss, or At least one of closed loop power control adjustment values.
  • dynamic scheduling may refer to a scheduling manner in which scheduling information is sent through a downlink control channel (or downlink control information).
  • the scheduling information may be dynamically generated by a network device, such as a base station, for a transmission opportunity. Therefore, the related scheduling information may be notified to a terminal device, such as a user equipment (UE), through a downlink control channel (information).
  • UE user equipment
  • semi-persistent scheduling at least part of the scheduling information is unchanged for a relatively long period of time, that is, part of the scheduling information may be for multiple transmission occasions, so part of the scheduling information may be less frequently, for example, through a high layer. Signaling, notifying the UE.
  • the partial scheduling information may include at least one of resource allocation of data, modulation order, code rate, and the like.
  • the downlink control information is carried on the downlink control channel.
  • the downlink control information can be used for both uplink scheduling (also referred to as uplink grant) and downlink scheduling.
  • the various second parameters in the present application include at least one of a nominal power, a path loss adjustment factor, a path loss, or a closed loop power control adjustment value.
  • the method may further include:
  • the first parameter is at least one of a nominal power, a path loss adjustment factor, path loss related information, or a closed loop power control indication.
  • the path loss related information includes at least one of resource information (such as SSB or CSI-RS resources) used for path loss measurement, or path loss related beam information.
  • resource information such as SSB or CSI-RS resources
  • the closed loop power control indication is used to indicate closed loop power control related information, such as indicating a closed loop power control process.
  • the closed loop power control related information may include at least one of a closed loop power control adjustment value and a closed loop power control process identifier.
  • the first indication information is an index of an impact factor of the at least two first parameters.
  • the first indication information is carried in the high layer signaling.
  • the higher layer signaling includes RRC signaling and/or MAC CE.
  • the method may further include:
  • the method may further include:
  • the second indication information is carried in the high layer signaling.
  • the second indication information is an index of the impact factor of the reference first parameter, or the transmission mode and/or transmission configuration information corresponding to the reference first parameter, or the reference first parameter At least one of the values.
  • the method may further include:
  • the second parameter is determined based on the first parameter.
  • the second time unit may be a time unit corresponding to a most recent dynamic scheduling of the first time unit.
  • the method may further include:
  • the second parameter is determined to be a default value.
  • the uplink data channel is transmitted on the first time unit, and the uplink control channel is not transmitted, the method further includes:
  • the uplink control channel is transmitted on the first time unit, and the uplink data channel is not transmitted.
  • the method further includes:
  • the first parameter used determines the power of the uplink data channel on the first time unit and the power headroom on the first time unit.
  • the second parameter is a first type of second parameter, and is one of a nominal power, a path loss adjustment factor, a path loss, or a closed loop power control adjustment value.
  • the method further includes:
  • the other second parameter is a nominal power, path loss adjustment a factor, a path loss, or a closed loop power control adjustment value, and different from the first type of second parameter;
  • the transmission mode and/or transmission configuration information corresponding to the first type of second parameter is the same as the transmission mode and/or transmission configuration information corresponding to the second type of second parameter.
  • the corresponding beam information is the same.
  • the transmission mode and/or transmission configuration information includes at least one of beam information, subcarrier spacing, transmission service information, or a waveform.
  • the method may further include:
  • the method may further include:
  • the indication information of the second parameter is sent to the network device.
  • a communication method including:
  • Sending first indication information where the first indication information indicates at least two first parameters; the at least two first parameters are used for uplink data channel power, uplink control channel power, or uplink reference signal power in dynamic scheduling Determination of at least one item;
  • the power headroom report is a virtual power headroom report, the virtual power headroom report is related to one of the at least two first parameters; the first parameter is a nominal power, At least one of a path loss adjustment factor, path loss related information, or a closed loop power control indication.
  • the method may further include:
  • the second indication information is carried in the high layer signaling.
  • the second indication information is an index of the impact factor of the reference first parameter, or the transmission mode and/or transmission configuration information corresponding to the reference first parameter, or the reference first parameter At least one of the values.
  • the first indication information is an index of an impact factor of the at least two first parameters.
  • the method may further include:
  • an apparatus in a third aspect, has a function of realizing the behavior of a network device or a terminal device in the above method aspect, and includes means for performing the steps or functions described in the above method aspects.
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the above apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus to perform the corresponding functions of the network device in the above method.
  • the first indication information is generated.
  • the communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions.
  • the first indication information is sent.
  • the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the network device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the device may be a base station, a gNB or a TRP, etc.
  • the communication unit may be a transceiver, or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above apparatus includes a transceiver, a processor, and a memory.
  • the processor is for controlling a transceiver transceiver signal for storing a computer program for executing a computer program in a memory, such that the apparatus performs the network device in any of the possible implementations of the second aspect or the second aspect The method of completion.
  • the above apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus to perform the corresponding functions of the terminal device in the above method.
  • the second parameter is determined.
  • the communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, the first indication information is received.
  • the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the device may be a smart terminal or a wearable device or the like, and the communication unit may be a transceiver or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above apparatus includes a transceiver, a processor, and a memory.
  • the processor is for controlling a transceiver transceiver signal for storing a computer program for executing a computer program in the memory, such that the apparatus performs the terminal in any of the possible implementations of the first aspect or the first aspect The method by which the device is completed.
  • a system comprising the above terminal device and a network device.
  • a fifth aspect a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of any of the possible implementations of the second aspect or the second aspect.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform any of the first aspect or the first aspect described above Possible methods in the implementation.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform any of the second aspect and the second aspect Possible methods in the implementation.
  • the method for determining power and/or power margin in a multi-beam scenario is applicable to the power control or power headroom reporting in a multi-beam scenario, for example, for the NR system. Power control or power headroom reporting.
  • FIG. 1 is a schematic diagram showing a communication system suitable for the communication method of the embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as a long term evolution (LTE) system, a worldwide interoperability for microwave access (WiMAX) communication system, and a fifth generation in the future.
  • 5G 5th Generation
  • NR new radio access technology
  • 6G systems 6th Generation
  • the application will present various aspects, embodiments, or features in a system that can include multiple devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.
  • information, signal, message, and channel may sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the difference is not emphasized. “of”, “corresponding (relevant)” and “corresponding” can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
  • the subscript such as W1 may be a non-subscript form such as W1, and the meaning to be expressed is consistent when the difference is not emphasized.
  • the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • the embodiment of the present application can be applied to a time division duplex (TDD) scenario or a frequency division duplex (FDD) scenario.
  • TDD time division duplex
  • FDD frequency division duplex
  • the embodiments of the present application can be applied to a traditional typical network or to a UE-centric network in the future.
  • the UE-centric network introduces a non-cell network architecture, that is, deploys a large number of small stations in a specific area to form a hyper cell, and each station is a transmission point of the Hyper cell ( Transmission Point, TP) or TRP, and connected to a centralized controller.
  • TP Transmission Point
  • TRP Transmission Point
  • the network side device selects a new sub-cluster (sub-cluster) for the UE to serve, thereby avoiding true cell handover and achieving continuity of the UE service.
  • the network side device includes a wireless network device.
  • different base stations may be base stations with different identifiers, or may be base stations deployed in different geographical locations with the same identifier.
  • the base station, or the baseband chip should support the method provided by the embodiment of the present application before deployment, because the base station does not know whether it will involve the scenario applied by the embodiment of the present application before the base station is deployed. It can be understood that the foregoing base station with different identifiers may be a base station identifier, or may be a cell identifier or other identifier.
  • the scenario in the embodiment of the present application is described by taking the scenario of the NR network in the wireless communication network as an example. It should be noted that the solution in the embodiment of the present application may also be applied to other wireless communication networks, and the corresponding names may also be used in other scenarios. The name of the corresponding function in the wireless communication network is replaced.
  • the beam beam can be understood as a spatial resource, and can refer to a transmission or reception precoding vector with energy transmission directivity.
  • the transmitting or receiving precoding vector can be identified by index information.
  • the energy transmission directivity may refer to a signal having a better received power after receiving the precoding process through the precoding vector in a certain spatial position, such as satisfying a reception demodulation signal to noise ratio, etc.; Directivity may also mean that the same signals transmitted from different spatial locations are received by the precoding vector with different received power.
  • the same communication device may have different precoding vectors, and different devices may also have different precoding vectors, that is, corresponding to different beams.
  • one communication device can use one or more of a plurality of different precoding vectors at the same time, ie, one or more beams can be formed at the same time.
  • the information of the beam can be identified by the index information.
  • the index information may correspond to a resource identifier (identity, ID) of the terminal device (such as the user equipment UE).
  • ID resource identifier
  • the index information may correspond to a configured channel state information reference signal.
  • the ID or resource of the CSI-RS may also correspond to the ID or resource of the configured uplink sounding reference signal (SRS).
  • the index information may also be index information of a signal or channel display or implicit bearer carried by the beam, for example, the index information may be a synchronization signal sent by a beam or a broadcast channel indicating the beam. Index information.
  • FIG. 1 shows a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application.
  • the communication system 100 includes a network device 102 and a terminal device 106.
  • the network device 102 can be configured with multiple antennas, and the terminal device can also be configured with multiple antennas.
  • the communication system may also include a network device 104, which may also be configured with multiple antennas.
  • network device 102 or network device 104 may also include multiple components (eg, processors, modulators, multiplexers, demodulators or demultiplexers, etc.) associated with signal transmission and reception.
  • multiple components eg, processors, modulators, multiplexers, demodulators or demultiplexers, etc.
  • the network device is a device with a wireless transceiver function or a chip that can be disposed on the device, and the device includes, but is not limited to, an evolved Node B (eNB) and a radio network controller (RNC).
  • AP access point
  • WIFI wireless fidelity
  • TRP transmission point
  • TRP Transmission point
  • TP Transmission point
  • 5G such as NR, gNB in the system, or transmission point (TRP or TP), one or a group of base stations (including multiple antenna panels) in the 5G system
  • it may be a network node constituting a gNB or a transmission point,
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include a radio unit (RU).
  • the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
  • the CU implements radio resource control (RRC), the function of the packet data convergence protocol (PDCP) layer, and the DU implements the wireless chain.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU implements the wireless chain.
  • the functions of the radio link control (RLC), the media access control (MAC), and the physical (PHY) layer Since the information of the RRC layer eventually becomes information of the PHY layer or is transformed by the information of the PHY layer, high-level signaling, such as RRC layer signaling or PHCP layer signaling, can also be used in this architecture.
  • the network device can be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU may be divided into network devices in the access network RAN, and the CU may be divided into network devices in the core network CN, which is not limited herein.
  • a terminal device may also be called a user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user.
  • Agent or user device may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal.
  • VR virtual reality
  • AR augmented reality
  • the embodiment of the present application does not limit the application scenario.
  • the foregoing terminal device and a chip that can be disposed in the terminal device are collectively referred to as a terminal device.
  • both the network device 102 and the network device 104 can communicate with a plurality of terminal devices, such as the terminal device 106 shown in the figures.
  • Network device 102 and network device 104 can communicate with any number of terminal devices similar to terminal device 106. It should be understood, however, that the terminal device in communication with the network device 102 and the terminal device in communication with the network device 104 may be the same or different.
  • the terminal device 106 shown in FIG. 1 can simultaneously communicate with the network device 102 and the network device 104, but this only shows one possible scenario, in some scenarios, the terminal device may only be associated with the network device 102 or the network device 104 communication, this application does not limit this.
  • FIG. 1 is merely a simplified schematic diagram for ease of understanding.
  • the communication system may also include other network devices or may also include other terminal devices, which are not shown in FIG.
  • At least one node sends a signal to other nodes, and the purpose of power control is to make the signal sent by at least one node in the network reach the other nodes, and the power can meet the requirements of the system.
  • the node here may refer to a base station, a user equipment, and the like.
  • the power control can be such that the signal power transmitted by one user meets certain power requirements when it arrives at another user.
  • the power control may be such that the signal power transmitted by the user satisfies the power requirement of the base station when it arrives at the base station.
  • the power control may be used to ensure that the signal sent by the base station reaches the power requirement of the user equipment when reaching the user equipment.
  • the power demand in the power control may refer to the power requirement of reaching a node. For example, if the signal is a useful signal to the node, the node needs to meet the demodulation threshold for the power of the received signal, and the demand is the received signal. The power should not be too low, otherwise it will not be correctly received and demodulated. Or, for example, if the signal is a non-useful signal to the node, such as an interference signal, the node needs to meet the interference threshold value for the power of the received signal, and the demand is that the power of the received signal should not be too high. Otherwise, the signal causes strong interference to the useful signal of the node.
  • Power control can occur between one node and another node. For example, the power of a D2D scenario for a user equipment to another user equipment satisfies a certain SINR; it can also occur between multiple nodes and one node, such as in LTE.
  • the power control is to enable the power of the at least one user equipment in the network to reach the base station to meet the signal to interference and noise ratio SINR requirement of the base station; or may occur between multiple nodes to multiple nodes, as in the TDD network standard.
  • the system may have both uplink and downlink scheduling (such as dynamic TDD technology in a 5G network). At this time, power control can be used to determine the many-to-many power requirements of multiple user equipments and multiple base stations in the network.
  • the design of the power control is to control the signal transmission power of the nodes in the network, so that the received power of the signal satisfies the reception requirements.
  • the reception requirement may be the power requirement, SINR requirement, etc. described above, or a signal to noise ratio SNR requirement.
  • SNR, SINR, IoT (interference over thermal), RSRP (reference signal received power), and received power of the signal can all be regarded as target parameters in the power control link. These parameters are not They are completely equivalent, but they are related to each other. For example, SINR and RSRP are not completely equal, but in the case of the same interference level, the higher the RSRP, the better the SINR of the signal.
  • the power control in this paper does not limit the target control parameters of the algorithm in practice. But in general, the base station can determine the parameters of the power control by comparing whether the statistical signal SINR converges to the target SINR.
  • the power control margin is the power difference between the node's ability to reach the maximum transmit power and the power at which the node sends a signal.
  • the power difference here refers to the meaning of the difference between the powers in the broad sense, and does not mean that the two powers are subtracted.
  • the power difference can be obtained by subtracting the linear value of the signal transmission power from the linear value of the maximum power, or decibel (dB) of the signal transmission power by the decibel (dB) value of the maximum power.
  • the value is obtained, in which case it is equivalent to the linear value of the maximum power divided by the linear value of the signal transmission power and then converted to the dB value, which is also called the power difference. Accordingly, the description of the formula appearing in the present application is for explaining the physical meaning of the power difference, and the formula itself can also be transformed between the subtraction of the dB value, the division of the linear value, the subtraction of the linear value, and the like.
  • the PH value can be positive, 0, and negative, and its value can be quantized.
  • the PH value is quantized to different quantization levels according to a certain quantization interval.
  • the power headroom report is sent to other nodes by the above-mentioned node that sends the signal.
  • the user equipment calculates, generates, and transmits a PHR, and the PH value is received, calculated, and applied by the base station.
  • the user equipment triggers the PHR when the trigger condition is met.
  • the UE obtains the PH value, and transmits the PH value to the PHR corresponding cell, and then sends the PHR through the carried channel.
  • the PHR cell in LTE is a type of MAC cell, and the channel carried is PUSCH.
  • the base station After receiving the PHR, the base station will be able to obtain PH information and the like in the PHR.
  • the base station can use the PH information to perform the power management process. For example, when the base station receives the PH of the user equipment is small (the PH is negative, it can also be said to be PH is small), which means that the maximum transmit power that the user equipment can support is already difficult or unable to support the transmission of the current signal.
  • the base station may adjust the resources allocated to the user equipment by using an algorithm, such as reducing the bandwidth of the signal sent by the user equipment, or the base station may adjust the transmission power of the user equipment, such as reducing the power of the signal transmitted by the user equipment (the specific means is
  • the user equipment is enabled to transmit a signal to prevent the actual transmission power density caused by the excessive power requirement due to excessive transmission power demand being lower than the power density required by the base station, resulting in deterioration of the signal quality.
  • PH power control.
  • various optimization algorithms can be designed based on the physical meaning of PH to optimize system performance.
  • the physical flow of the above PHR is not limited to the LTE network.
  • the process can also be extended, scaled, and embedded into other networks, such as 5G networks.
  • PC power control
  • PHR power headroom reporting process
  • the relevant formulas in the power control and power headroom reports are for various upstream signal and channel designs.
  • LTE including PUSCH, PUCCH and SRS
  • 5G correspondingly for uplink data channel, control channel, reference signal for demodulation, reference signal for channel reference, random access channel, etc.
  • the resource granularity calculated by the relevant formula is a resource set, and the resource set contains more than one minimum resource granularity.
  • the resource set may be a system frame, a radio frame, a frame, a subframe, a time slot, a half slot, a mini slot, a symbol, a symbol set, and the like in the perspective of the time domain.
  • the frequency domain it may be a carrier, a system bandwidth, a partial bandwidth, a bandwidth part, a sub-band, a resource block, a sub-carrier, a serving cell, and the like.
  • the granularity for the formula can be a channel, the scheduling granularity of the signal.
  • a node transmits or receives signals through multiple antennas, hereinafter referred to as MIMO.
  • MIMO multiple antennas
  • a node can adjust the MIMO transmission and reception scheme, such as adjusting the weight of the transmitting antenna, assigning different signals to different antennas, etc., and can obtain gains such as diversity and multiplexing, thereby improving system capacity and increasing system reliability.
  • massive MIMO massive MIMO
  • the wavelength of the signal is shorter, such as only the millimeter level, the corresponding antenna size will also be reduced, and the nodes in the network have the ability to configure a large-scale antenna array.
  • M-MIMO M-MIMO
  • a node can configure dozens, hundreds, or even more antenna elements. These antenna arrays can be formed into antenna arrays according to a certain arrangement, such as linear arrangement, circular arrangement, and the like.
  • the antenna gain can be obtained by adjusting the weight on the antenna array, so that the transmitted or received signal exhibits an uneven energy distribution in space.
  • the signal can be made to have an energy concentration effect in a part of the direction in space. This effect can be called beamforming. At this point the signal forms a beam in space.
  • the space here may be an angular distribution in the horizontal direction, an angular distribution in the vertical direction, and the like.
  • the antenna gain is often high, resulting in significant beam directivity of the signal. Between different beams, there will be higher isolation and they will experience different channel conditions. When two nodes use beam for communication, using different beams under different conditions may cause a large change in received power, which varies from a few dB to a dozen dB. In the power control technology of LTE, the condition of such a beam is not considered.
  • multiple power control parameters can be flexibly used for power calculation, so that in different scenarios, the terminal device can calculate the requirements according to different parameters to meet the requirements of these different scenarios.
  • a beam transmission may be used between a network device and a terminal device.
  • a beam is a kind of physical resource. In some communication systems, it may be indexed as some pilot resources, time-frequency resources, and the like.
  • the physical meaning of the beam is that when transmitting or receiving signals, multiple antenna technologies can be used for transmission and reception.
  • Transmission nodes such as network devices and terminal devices can perform weight processing on multiple antennas, so that the transmitted and received signals are certain.
  • the non-uniform distribution of energy in the spatial direction causes a certain concentration of signal energy, and the aggregation of such energy can be referred to as a beam.
  • the beam may be switched between the network device and the terminal device. Especially when the quality of one beam is degraded, other beams may be switched for communication to ensure communication quality.
  • the terminal device can measure the PL according to the plurality of pilots and write it as PL(k), where k is a value corresponding to the measurement resource.
  • the measurement resources are corresponding to the beam.
  • the network device usually notifies the beam used by the terminal device during transmission, and the beam may include a transmit beam, a receive beam, and the like. Therefore, when receiving the indication information of such a beam, the terminal device can clearly know what measurement resource should be used for measurement, and then perform power calculation. However, when the terminal device does not receive such a beam indication, how the terminal device obtains the PL(k) of the calculated power or power margin from the plurality of PL(k) is an urgent problem to be solved.
  • the embodiment of the present application provides a communication method, which is applicable to power control or power headroom reporting in an NR system.
  • the embodiments of the present application can be applied to network devices and network devices (such as macro base stations and micro base stations), network devices and terminal devices, terminal devices and terminal devices (such as device-to-device D2D, and in-vehicle devices to other devices V2X communication).
  • Network devices and network devices such as macro base stations and micro base stations
  • network devices and terminal devices such as device-to-device D2D, and in-vehicle devices to other devices V2X communication.
  • Communication the communication between the network device and the terminal device is taken as an example, but is not limited thereto, and may be collectively referred to as communication between the transmitting end and the receiving end.
  • the uplink may refer to the terminal device as the transmitting end, the network device as the receiving end, and the downlink device may refer to the network device as the transmitting end and the terminal device as the receiving end.
  • the uplink may refer to one transmission direction, and the downlink may refer to another transmission direction opposite to the uplink.
  • the communication method 200 can include:
  • Step S201 Receive first indication information, where the first indication information indicates at least two first parameters, and the at least two first parameters are used to determine uplink data channel power, uplink control channel power, or uplink when dynamically scheduling. At least one of reference signal powers;
  • Step S202 determining a second parameter that is not used by the first time unit to transmit at least one of an uplink data channel, an uplink control channel, or an uplink reference signal; the second parameter is a nominal power, a path loss adjustment factor, and a path. At least one of loss, or, closed loop power control adjustment value;
  • step S203 determining, according to the second parameter, at least one of uplink data channel power, uplink control channel power, uplink reference signal power, or power headroom on the first time unit.
  • step S204 a power headroom report is sent based on the power headroom.
  • information of the maximum transmit power information and/or the determined (or selected) second parameter may also be transmitted.
  • power control of one or more channels may be performed or power of one or more channels may be considered when reporting power headroom.
  • the one or more channels may include at least one of a data channel, a control channel, and a reference signal.
  • an uplink data channel such as a physical uplink shared channel (PUSCH), an uplink control channel, such as a physical uplink control channel (PUCCH), and an uplink reference signal, such as a sounding reference signal (SRS).
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • SRS sounding reference signal
  • the time unit is used to represent a time unit in the time domain, and may be, for example, one or more of a sampling point, a symbol, a minislot, a time slot, a subframe, or a radio frame.
  • the time unit information may include the type, length, or structure of the time unit.
  • the time unit can be understood as the time domain unit of the resource scheduling.
  • P CMAX When describing power, one or more of the following parameters may be involved: P CMAX , M PUSCH , P O , ⁇ , PL, ⁇ TF , f, which are also mentioned in the power control part 36.213 of the LTE protocol, in In NR, these parameters have similar meanings.
  • P CMAX is the dB value of the maximum transmit power configured for the terminal device
  • M PUSCH represents the bandwidth of a data channel, such as PUSCH
  • P o denotes a reference power density, which may also be referred to as a nominal power, the physical meaning is the power density of the signal that the receiving end expects to receive, and the power density refers to the density of the power in the frequency domain;
  • ⁇ represents a path loss compensation factor
  • the value of ⁇ is a discrete value between [0, 1], such as ⁇ ⁇ ⁇ 0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1 ⁇ .
  • This parameter is used to adjust the path loss compensation and is therefore typically presented as a multiplication factor for the path loss PL.
  • the network device can control the extent to which the terminal device compensates for the path loss. For example, the near-point terminal device tends to have better channel conditions, and the network device can configure it with less than 1 alpha to suppress the near-point terminal device to the far-end terminal device. interference;
  • the path loss represents path loss and is used to compensate for path loss in signal transmission.
  • the path loss can be regarded as a generalized path loss, which can be understood as path loss, coupling loss, etc., and expresses a large-scale loss experienced when a signal propagates on a link between a network device and a terminal device.
  • ⁇ TF represents the power offset value related to the modulation coding mode and the content of the signal (for example, whether there is uplink control information UCI, the size of the uplink control information); optionally, when the terminal device transmits at a high code rate, correspondingly It has a higher ⁇ TF value, improves the transmission power, ensures the signal quality at high bit rate transmission, and prevents the demodulation performance of the signal from degrading due to high code rate transmission;
  • f, h, g respectively represent the closed loop power control adjustment of the data channel, the reference signal and the control channel, and optionally, the dynamic power offset indicated by the transmission power control TPC command.
  • ⁇ F represents the format offset of the control channel, such as PUCCH.
  • the above parameters may be further defined by subscripts, impact factors (also called variables), and the like, and applied to a specific channel, such as one or more of an uplink data channel, an uplink control channel, and an uplink reference signal.
  • the above parameters may be in the form of the following equation:
  • the meaning of the influence factor or subscript can be:
  • the PUSCH indicates that the parameter is a PUSCH-related parameter, and similarly, the PUCCH indicates that the parameter is a PUCCH-related parameter, and the SRS indicates that the parameter is an SRS-related parameter;
  • M PUSCH indicates the bandwidth of the PUSCH
  • i is the identity (also called index or number) of the time unit, such as a time slot;
  • c is the carrier identifier (also known as the number or index), or the serving cell number (also known as the identity or index);
  • M PUSCH,c (i) represents carrier c, the bandwidth of the PUSCH transmitted on subframe i;
  • c in the present application is a serving cell, it means that the power, power margin and the like in the present application are all calculated for one serving cell; if it is a carrier identifier, it means that the power and power margin in the present application are all Is calculated for a carrier identifier;
  • the parameter subscript in the present application may be one or more than one.
  • the subscript u may be added to indicate that the parameter is for one carrier of a serving cell, for example, Pcmax may have subscripts c and u, indicating that the Pcmax is the serving cell c carrier u. .
  • one or more uplink carriers may exist in one serving cell, and the carrier may be distinguished by a carrier identifier ID or a radio network temporary identifier (RNTI);
  • RNTI radio network temporary identifier
  • j, b, m respectively represent the identification of the parameters related to the transmission mode of the PUSCH, PUCCH and SRS (also referred to as index or number or value);
  • the transmission mode includes dynamic scheduling transmission, semi-persistent scheduling transmission, non-authorization information transmission, or one or more items in the access procedure.
  • the transmission configuration of the present application includes a transmission beam, a transmission waveform (such as CP-OFDM, DFT-S-OFDM, etc.), a transmission service (such as URLLC, eMBB, etc.), a numerology, a partial bandwidth BWP, a carrier, a time domain length, and a time interval. At least one of a gap set or the like.
  • the beam in the present application may be identified by one or more of a resource identifier ID, a port number, a time domain identifier, a frequency domain identifier, a pattern identifier, and a precoding matrix identifier.
  • the numerology in this application is a parameter used by the 5G communication system.
  • the numerology can be defined by one or more of the following parameter information: subcarrier spacing, cyclic prefix (CP), time unit, bandwidth.
  • numerology can be defined by subcarrier spacing and CP.
  • the CP information may include a CP length and/or a CP type. The type of the CP can be determined based on the overhead of the CP.
  • the CP can be a normal CP (NCP) or an extended CP (ECP).
  • NCP normal CP
  • ECP extended CP
  • the numerology corresponds to one subcarrier spacing in the frequency domain, and by narrowing the reference subcarrier spacing by N times, different numerologies can be defined.
  • N is an integer.
  • k corresponds to the resource of the parameter signal (RS) measuring the path loss
  • k represents the resource of the parameter signal (RS) of the measured path loss related to determining the PUSCH power
  • k 1 represents the resource of the parameter signal (RS) of the measured path loss related to determining the PUCCH power
  • k 2 represents and determines the PUCCH power Resources related to the parameter signal (RS) for measuring path loss
  • power control also known as closed-loop power control process indication or index or identification
  • the above subscripts may also have subscripts, such as numerical subscripts, 0, 1, 2, etc., to distinguish different values, such as k 1 , k 2 , l 1 , l 2 , and the like.
  • the use of the digital subscript may not be rigorous.
  • the value of the influence factor of the corresponding parameter in the formula of the present application, or the value of the corresponding parameter, is not concerned unless otherwise specified.
  • the parameter in the formula may be numerically subscripted to indicate the difference.
  • the superscript ⁇ represents a linear value, such as a linear value representing the power allocated to the PUCCH on time unit i;
  • one or more of the above channels may be transmitted in various combinations, such as one of a transmission data channel, a control channel, and one or more reference signals, when determining the power of these channels and determining the power headroom, In the case, these cases are described separately below.
  • the power of the data channel can be determined in the following three cases:
  • the terminal device obtains corresponding power control parameters according to the current transmission configuration, and calculates the power of the PUSCH based on the power control parameters.
  • the power of the PUSCH may be calculated based on a formula or a table or sequence or other representation that satisfies the following equation.
  • the corresponding power control parameters may include P CMAX , M PUSCH , P O , ⁇ , PL, ⁇ TF , f in the above equation (for the convenience of description, c, i, j, etc. of these parameters are omitted here. Impact factor or subscript).
  • the network device may send configuration information to the terminal device, where the configuration information indicates at least two first parameters, and the at least two first parameters determine, by the terminal device, a power control parameter for determining an uplink data channel.
  • the at least two first parameters are used to determine the power of the uplink data channel during dynamic scheduling.
  • the first parameter may be a nominal power (this is the nominal power of the uplink data channel), a path loss adjustment factor, path loss measurement related information (such as resource information used for path loss measurement), or At least one of a closed loop power control indication, such as a closed loop power control process indication and/or a closed loop power adjustment value.
  • a nominal power this is the nominal power of the uplink data channel
  • path loss adjustment factor path loss measurement related information
  • path loss measurement related information such as resource information used for path loss measurement
  • At least one of a closed loop power control indication such as a closed loop power control process indication and/or a closed loop power adjustment value.
  • the power control parameter configured by the network device to the terminal device may be a first parameter set, where the set includes the foregoing nominal power (this is the nominal power of the uplink data channel), the path loss adjustment factor, and the path loss measurement correlation.
  • the set includes the foregoing nominal power (this is the nominal power of the uplink data channel), the path loss adjustment factor, and the path loss measurement correlation.
  • the foregoing first parameter is carried by high layer signaling.
  • the high layer signaling may be a radio resource control RRC signaling or a medium access control control element MAC CE.
  • the network device may send the indication information to the terminal device, where the indication information is used to indicate that one of the at least two first parameters is used on the time unit i.
  • the indication information is carried by the downlink control information, and the following information is controlled by the DCI.
  • the downlink control information may further carry information used to schedule the PUSCH.
  • the information for scheduling the PUSCH may indicate that the PUSCH is transmitted on the time unit i, and may also be used to indicate resource information of the PUSCH, such as the bandwidth of the PUSCH.
  • the terminal device can obtain the power of the uplink data channel on the time unit i.
  • the terminal device may obtain the power of the uplink data channel on the time unit i based on the above equation.
  • the terminal device obtains a corresponding power control parameter according to the current transmission configuration, and calculates a power of the PUSCH according to the power control parameter.
  • the power of the PUSCH may be calculated based on a formula or a table or sequence or other representation that satisfies the following equation.
  • the terminal device calculates the PUSCH power
  • the PUCCH transmission may be guaranteed first. Therefore, the power of the PUCCH can be preferentially allocated, and then, in the calculation of the power of the PUSCH, the upper limit of the guaranteed power does not exceed the value of the maximum power minus the power of the PUCCH transmitted at the same time.
  • the corresponding power control parameter may include the above equation M PUSCH , P O , ⁇ , PL, ⁇ TF , f (for the sake of simplicity of description, the influence factors or subscripts of c, i, j, etc. of these parameters are omitted here).
  • the terminal device may obtain the uplink on the time unit i.
  • the power of the data channel may be obtained.
  • the terminal device may obtain the power of the uplink data channel on the time unit i based on the above equation.
  • the terminal device When the terminal device does not currently transmit the PUSCH but still receives the TPC command, in order to ensure that the TPC accumulation does not exceed the upper and lower bounds.
  • the upper bound is generally the maximum transmit power
  • the lower bound is typically 0, and the power of the PUSCH needs to be calculated.
  • the time unit i is not used to transmit the PUSCH, that is, there is no scheduling information of the PUSCH.
  • the terminal device determines a second parameter, where the second parameter is a nominal power (this is a nominal power of the PUSCH), a path loss adjustment factor, a path loss, or a closed loop power control adjustment value. At least one of them.
  • the terminal device may calculate the power of the PUSCH according to the foregoing second parameter.
  • the power of the PUSCH is calculated based on a formula or a table or sequence or other representation that satisfies the following equation.
  • the power of the control channel can be determined in the following three cases:
  • the terminal device obtains a corresponding power control parameter according to the current transmission configuration, and calculates a power of the PUCCH according to the power control parameter.
  • the power of the PUSCH may be calculated based on a formula or a table or sequence or other representation that satisfies the following equation.
  • the subscript with the PUCCH indicates that the parameter is used by the corresponding PUCCH, for example, the M PUCCH refers to the bandwidth of the PUCCH.
  • P O_PUCCH,c (b) refers to the nominal power of the PUCCH, which is a variant of the above P o , where b is a physical quantity similar to j in 1.3) and is related to the transmission configuration.
  • the network device can configure a total of B nominal powers for the terminal device, indicating that b corresponds to one of the nominal powers.
  • PL c (k 1 ) represents the path loss of the PUCCH measured by the terminal device with the corresponding measurement resource k 1 .
  • k 1 and k may be the same or different, the same means that the path loss of the PUSCH and the PUCCH are obtained by using the same measurement resource, and the difference is that the path loss of the PUSCH and the PUCCH is obtained by using different measurement resources.
  • the terminal device can transmit the PUSCH and the PUCCH with different beams.
  • ⁇ F_PUCCH (F) is the power offset of the format of the PUCCH, where F corresponds to the format of the PUCCH.
  • ⁇ PUCCH_TF.c (i) is the modulation and coding scheme on the PUCCH parameters related to a modification of the above-described ⁇ TF.
  • g is similar to the f function (or expression) in 1.1), where g is the closed loop power control parameter for PUCCH.
  • the closed loop power control process of the PUCCH may be the same as or different from the PUSCH, and the formula of the present application does not limit whether the two are the same (even if the parameter l is used). It can be understood that the subscript can also be added to the parameter l, as follows, to distinguish the closed loop power control process of the PUCCH and the closed loop power control process of the PUSCH.
  • the subscripts of the PUCCH related parameters in the above formula may be removed. For example, if the PUCCH is only sent on the primary serving cell, the parameters of the PUCCH are also related to the primary serving cell, so that there is no need to distinguish between c and c can be removed.
  • the network device may send configuration information to the terminal device, where the configuration information indicates at least two first parameters, and the at least two first parameters determine, by the terminal device, a power control parameter for determining an uplink control channel.
  • the at least two first parameters are used to determine the power of the uplink control channel when dynamically scheduling.
  • the first parameter may be a nominal power (this is the nominal power of the uplink control channel), path loss measurement related information (such as resource information for path loss measurement), or a closed loop power control indication ( At least one of the closed loop power control process indications.
  • the power control parameter configured by the network device to the terminal device may be a first parameter set, where the set includes the foregoing nominal power (this is the nominal power of the uplink control channel), path loss measurement related information, or a closed loop.
  • the set includes the foregoing nominal power (this is the nominal power of the uplink control channel), path loss measurement related information, or a closed loop.
  • the power control process indications One or more of the power control process indications.
  • the foregoing first parameter is carried by high layer signaling.
  • the high layer signaling may be a radio resource control RRC signaling or a medium access control control element MAC CE.
  • the network device may send the indication information to the terminal device, where the indication information is used to indicate that one of the at least two first parameters is used on the time unit i.
  • the indication information is carried by the downlink control information, and the following information is controlled by the DCI.
  • the downlink control information may further carry information used to determine a PUCCH resource.
  • the downlink control information may further carry a closed loop power control indication for determining an uplink control channel.
  • the closed loop power control indication for the uplink control channel may indicate at least one of a closed loop power control adjustment value and a closed loop power control process.
  • the terminal device can obtain the power of the uplink control channel on the time unit i.
  • the terminal device may obtain the power of the uplink control channel on the time unit i based on the above equation.
  • the terminal device When the terminal device does not currently transmit the PUCCH, but still receives the TPC command, in order to ensure that the TPC accumulation does not exceed the upper and lower bounds.
  • the upper bound is generally the maximum transmit power
  • the lower bound is typically 0, and the power of the PUCCH needs to be calculated.
  • the terminal device may still receive the downlink control information sent by the network side device.
  • the downlink control information may include closed loop power control information.
  • the closed loop power control information can be used to indicate a closed loop power adjustment value. In accumulating the closed-loop power control mode, between the time unit t-X and the time unit t, the power of the PUCCH is still calculated in order to calculate the accumulation of the TPC, but no PUCCH needs to be transmitted during this time.
  • time unit i is not used to transmit PUCCH.
  • the terminal device determines a second parameter for power control, where the second parameter is a nominal power (in this case, a nominal power of the PUCCH), a path loss adjustment factor, a path loss, or At least one of closed loop power control adjustment values.
  • the terminal device may calculate the power of the PUCCH based on a formula or a table or sequence or other representation that satisfies the following equation.
  • the method for determining the second parameter for power control may refer to the subsequent specific description, and details are not described herein.
  • the terminal device can obtain the power information of the SRS according to the current SRS configuration.
  • the power of the reference signal can be determined based on the first parameter or the second parameter.
  • the terminal device may calculate the power of the SRS based on a formula or a table or sequence or other representation that satisfies the following equation.
  • P SRS_OFFSET refers to the power offset of the SRS with respect to the PUSCH.
  • this parameter can compensate the power offset of the SRS with respect to the PUSCH. This parameter is not required.
  • This parameter can be 0, which is deleted from the above formula.
  • the subscript of k 2 is 2, indicating the distinction between the measurement resources of the SRS and the measurement resources of the PUSCH, and k 2 and k may be the same or different.
  • the nominal power of the SRS may be the same or different than the nominal power of the PUSCH.
  • the network device may send configuration information to the terminal device, where the configuration information indicates at least two first parameters, and the at least two first parameters determine, for the terminal device, a function for determining power of the uplink reference signal.
  • the at least two first parameters determine, for the terminal device, a function for determining power of the uplink reference signal.
  • the at least two first parameters are used to determine the power of the uplink reference signal when dynamically scheduling.
  • the transmission of the uplink reference signal may be periodic or non-periodic.
  • the aperiodic triggering of the uplink reference signal transmission mode is a dynamic scheduling method.
  • the first parameter may be a nominal power (this is the nominal power of the SRS), a path loss adjustment factor, related information of the path loss measurement (such as resource information used for path loss measurement), or a closed loop. At least one of a power control indication (such as a closed loop power control process indication).
  • the power control parameter configured by the network device to the terminal device may be a first parameter set, where the set includes the foregoing nominal power (this is the nominal power of the uplink reference signal), the path loss adjustment factor, and the path loss measurement. Related information, or one or more of the closed loop power control indications.
  • the foregoing first parameter is carried by high layer signaling.
  • the high layer signaling may be a radio resource control RRC signaling or a medium access control control element MAC CE.
  • the network device may send the indication information to the terminal device, where the indication information is used to indicate that one of the at least two first parameters is used on the time unit i.
  • the terminal device can obtain the power of the uplink reference signal on the time unit i.
  • the terminal device may obtain the power of the uplink reference signal on the time unit i based on the above equation.
  • the PH as a whole can be expressed as the maximum power minus the power to be used to transmit the signal. This does not mean that the power of the subtracted signal is the actual power when the signal is transmitted, nor does it mean that the signal must be transmitted.
  • the meaning of the formula is that the maximum power is subtracted from the sum of the power of the channel and signal that need to be transmitted simultaneously.
  • This application does not limit that every physical variable in the formula needs to exist. For example, if only PUCCH and PUSCH are transmitted simultaneously, and SRS is not transmitted at the same time, the power of the SRS does not need to be subtracted. It means that if there is PUCCH and PUSCH to transmit at the same time, the power headroom should be the sum of the maximum transmit power minus the power of PUSCH and PUCCH. The following is an example of this.
  • the PH subtracts the power of the PUCCH from the maximum power according to the power of the PUSCH in the maximum power, and subtracts the SRS from the maximum power. The way of calculating the power;
  • the PH subtracts the power of the PUSCH and the PUCCH according to the maximum power, or subtracts the PUSCH from the maximum power. Calculate with the power sum of the SRS, or the way the power sum of the PUCCH and the SRS is subtracted from the maximum power;
  • the PH is calculated according to the manner in which the power sum of the PUSCH and the PUCCH and the SRS is subtracted from the maximum power, respectively.
  • a scenario in which a plurality of signals and channels are simultaneously transmitted is a scenario in which a plurality of signals and channels can be simultaneously transmitted.
  • the current time unit if multiple signals and channels can be transmitted simultaneously, but at the time, multiple signals, some signals in the channel, and channels are not transmitted, it is also required to transmit multiple signal channels simultaneously, and the maximum transmission power will be All signals that can be sent simultaneously, the power of the channel, and subtracted.
  • the type 1 PH (or PHR) is generally used when the PUSCH and the PUCCH are not transmitted at the same time, and can also be used when there is a PUSCH and a PUCCH in a time unit, such as a slot.
  • the general PUSCH and the PUCCH are Time division multiplexing TDM.
  • the terminal device transmits the PUSCH in time unit i and does not transmit the PUCCH. Then the corresponding PH is the current maximum transmit power minus the power of the PUSCH.
  • the terminal device obtains corresponding power control parameters according to the current transmission configuration, and calculates the power of the PUSCH based on the power control parameters.
  • the terminal device obtains the corresponding power control parameter according to the current transmission configuration, and may refer to a corresponding method for determining the PUSCH power, as described in 1.1.
  • the calculation of PH can be based on the following formula:
  • PH c (i) P CMAX,c (i)-(10log 10 (M PUSCH,c (i))+P O_PUSCH,c (j)+ ⁇ c (j) ⁇ PL c (k)+ ⁇ TF, c (i)+f c (i,l))
  • the terminal device transmits the PUSCH in time unit i and transmits the PUCCH.
  • the power headroom is equal to the maximum transmit power minus the power of the PUSCH.
  • the PUCCH occupies a partial symbol, and there are different power management for transmitting the PUSCH and the PUCCH, respectively, and there may be different power backoff parameters.
  • the Pcmax may be determined according to the power management parameters of the PUSCH. As in the following formula, the superscript wavy line of Pcmax indicates that the Pcmax at this time should be determined according to the power management parameters of the PUSCH.
  • a corresponding power headroom can be determined based on the second parameter.
  • the determination of the power headroom at this time can be referred to the description in the determination of the PUSCH power as in the aforementioned 1.3.
  • the determination of the power headroom can be based on the following formula:
  • PH c (i) P CMAX,c (i)-(P O_PUSCH,c (j 0 )+ ⁇ c (j 0 ) ⁇ PL c (k 0 )+f c (i,l 0 ))
  • the method for determining the second parameter may refer to the subsequent description.
  • the Pcmax that meets the power management requirements can be distinguished by adding a wavy line to Pcmax.
  • the PH (or PHR) of type type 2 is generally used when PUSCH and PUCCH are simultaneously transmitted, for example, PUSCH and PUCCH frequency division multiplexing FDM in one slot.
  • the terminal device When the terminal device transmits the PUSCH in the time unit i and simultaneously transmits the PUCCH.
  • the terminal device obtains corresponding power control parameters according to the current transmission configuration, and calculates powers of the PUSCH and the PUCCH based on the power control parameters.
  • the method of obtaining the power control parameters can be referred to the description in the method of determining power in 1.2 above.
  • the power margin can be obtained by subtracting the power of the PUSCH and the power of the PUCCH from the maximum power.
  • the power headroom can be determined based on the following equation:
  • the terminal device transmits the PUSCH in time unit i and does not transmit the PUCCH.
  • the power of the PUSCH can be determined in the manner of 1.1), and the power of the PUCCH can be determined based on the second parameter.
  • the determination of the power of the PUCCH can be referred to the description in 2.2.
  • the PH (or PHR) can be determined based on one of the following formulas.
  • the second parameter may be indicated by the network device, or may be a default value, or may be selected by the terminal device. This situation can refer to the following formula:
  • the second parameter of the PUCCH may be determined according to the first parameter used by the PUSCH.
  • the influence factors k and l of the second parameter of the PUCCH are the same as the influence factors k and l of the first parameter of the PUSCH, and the influence factor b 0 of the second parameter of the PUCCH is obtained by the association of j, for example, b 0 and j corresponds to the same beam hypothesis.
  • Pcmax is calculated according to the power management requirements of the PUSCH.
  • Pcmax is obtained according to the power management requirements for simultaneous transmission of PUSCH and PUCCH.
  • the terminal device transmits the PUCCH in time unit i and does not transmit the PUSCH.
  • the power of the PUCCH can be determined in the manner of 2.1), and the power of the PUSCH can be determined based on the second parameter.
  • the PH (or PHR) can be determined based on one of the following formulas.
  • the second parameter may be indicated by the network device, or may be a default value, or may be selected by the terminal device. This situation can refer to the following formula:
  • the second parameter of the PUSCH may be determined according to a first parameter used by the PUCCH.
  • Pcmax is calculated according to the power management requirements of the PUSCH.
  • Pcmax is obtained according to the power management requirements for simultaneous transmission of PUSCH and PUCCH.
  • the terminal device does not transmit the PUCCH in the time unit i, nor does it transmit the PUSCH.
  • the power of PUSCH and PUCCH can be determined according to the second parameter.
  • For the method for determining the second parameter reference may be made to the subsequent description, and details are not described herein.
  • the second parameter of the PUSCH and the second parameter of the PUCCH can satisfy the same beam hypothesis.
  • the subscript 0 in the following formula indicates that the corresponding parameter is the second parameter.
  • Type 3 PH (or PHR) is used to support SRS handover switching. In this scenario, only SRS is used for measurement on the carrier.
  • the power parameter of the current SRS is determined, and the power of the SRS can be obtained according to the current power parameter. For details, refer to the description of point 3).
  • the PH (or PHR) can be obtained based on the following formula.
  • PH c (i) P CMAX,c (i)-(10log 10 (M SRS,c )+P SRS_OFFSET +P O_SRS,c (m)+ ⁇ SRS,c ⁇ PL c (k 2 )+h SRS, c (i,l))
  • the offset parameter of the SRS can be 0, so that the parameter can be removed.
  • the formula is as follows:
  • PH c (i) P CMAX,c (i)-(10log 10 (M SRS,c )+P O_SRS,c (m)+ ⁇ SRS,c ⁇ PL c (k 2 )+h SRS,c (i , l 2 ))
  • the Pcmax used by the terminal device may be calculated according to the power management requirement of the SRS. If the terminal device transmits the SRS in the time unit and transmits the PUSCH, the Pcmax used by the terminal device may be calculated according to the power management requirement of the SRS, or may be obtained according to the power management requirements of the simultaneous transmission of the PUSCH and the SRS.
  • the terminal device can calculate the PH according to the second parameter.
  • the PH (or PHR) can be calculated based on the following formula.
  • PH c (i) P CMAX,c (i)-(P O_SRS,c (m 0 )+ ⁇ SRS,c ⁇ PL c (k 0 )+h SRS,c (i,l 0 ))
  • This type of PH can be used to calculate the PUCCH related PH (or PHR).
  • the PUSCH and PUCCH may be transmitted on time resources that do not overlap.
  • the PUCCH can have multiple formats, and the PUCCH of some formats occupies fewer symbols, such as 1 to 2 OFDM symbols, and the occupied frequency domain resources can be relatively large.
  • the PUCCH of this format is referred to as a short PUCCH according to the feature that the PUCCH occupies less symbols.
  • the time division manner may be adopted, that is, the OFDM symbol occupied by the PUSCH is different from the OFDM symbol occupied by the PUCCH. Since this PUCCH can occupy a part of the bandwidth, the bandwidth allocation of such PUCCH is important. In this case, the PH of the PUCCH needs to be calculated. In this case, the power of the PUCCH can be subtracted from the maximum transmit power to obtain a power headroom.
  • the terminal device can acquire the current transmission configuration, obtain the corresponding power control parameter, and calculate the power of the PUCCH based on the power control parameter.
  • the power margin can be obtained by subtracting the power of the PUCCH from the maximum power.
  • the corresponding PH (or PHR) can be determined based on the following formula:
  • PH c (i) P CMAX,c (i)-(10log 10 (M PUCCH,c (i))+P 0_PUCCH (b)+PL c (k 1 )+ ⁇ F_PUCCH (F)+ ⁇ PUCCH_TF,c (i)+g(i,l 1 ))
  • Pcmax should meet the requirements of power management and can be calculated according to the power management requirements for transmitting only PUCCH.
  • Case 10 is a scenario where there is PUCCH transmission and no PUSCH transmission. It can be extended to case 11 with PUCCH transmission and PUSCH transmission.
  • the Pcmax at this time may be different for the PUSCH and/or the PUCCH due to power management factors, and it may be specified that the Pcmax is determined according to the power management parameter of one of the PUSCH or the PUCCH.
  • Case 11 is calculated in the same way as Case 10. The difference is the way Pcmax is calculated.
  • Pcmax may be calculated according to the power management requirement according to the assumption that only the PUCCH transmission is performed; or, Pcmax may be calculated according to the power management requirement according to the assumption that only the PUSCH transmission is performed; or, the power management may be performed according to the PUCCH only transmission assumption. Require calculation to obtain;
  • the tilde identification of Pcmax can be used to express the power management requirements here.
  • the corresponding PH (or PHR) can be determined based on the following formula:
  • the terminal device does not have PUCCH transmission in time unit i.
  • the power headroom of the PUCCH is calculated, which can be calculated according to the second parameter.
  • the PH (or PHR) of the PUCCH can be determined according to the following formula.
  • the terminal device may perform the calculation and/or reporting of the corresponding PH by default or according to the indication of the network device. If the calculation and/or reporting of the PH is required, reference may be made to the method of determining the second parameter as described below.
  • the network device sends indication information to the terminal device, where the indication information indicates one of the at least two first parameters;
  • the terminal device determines the second parameter based on the indication information.
  • Correspondence between the terminal device can obtain the index j with P O_PUSCH and / or [alpha], the correspondence between and / or index and P O_PUCCH b and / or, with the index m P O_SRS (and / or The correspondence between ⁇ SRS ).
  • the network device and the terminal device have a consistent understanding of the correspondence.
  • the total number of indexes of j may be J, and the total number of indexes of b may be B, and the total number of indexes of m may be M'.
  • the M' refers to the total number of nominal powers of the SRS, which is distinguished from the bandwidth parameter M.
  • the corresponding relationship may be predefined in the protocol or obtained through configuration.
  • the network device and the terminal device are stored in the form of a table, a sequence, a formula or a code, and the specific storage form may not be limited.
  • each j or b or m may correspond to a set of open loop parameters, which may include P O and/or ⁇ .
  • J can refer to the total number of configured open-loop parameter groups related to PUSCH, and a total of J groups are configured.
  • J can be an integer greater than one.
  • B can refer to the total number of open loop parameter groups associated with the configured PUCCH, and a total of B groups are configured.
  • M' can refer to the total number of configured open-loop parameter groups related to SRS, and a total of M' groups are configured.
  • the network device transmits configuration information to the terminal device, the configuration information indicating at least two first parameters for dynamic scheduling, the first parameter being P O or ⁇ .
  • the configuration information may indicate at least two P O_PUSCH and at least two ⁇ ;
  • the configuration information may indicate at least two P O_PUCCHs .
  • the configuration information may indicate at least two P O_SRSs (and/or ⁇ SRSs ).
  • the terminal device receives an indication of at least two first parameters.
  • the configuration information indicates that the at least two first parameters used for dynamic scheduling include:
  • the configuration information includes an index of the different j corresponding to at least two first parameters or an index of b.
  • j or b is a parameter related to the transmission mode and/or transmission configuration.
  • Determining, by the terminal device, P O and/or ⁇ corresponding to the time unit i may be determined by receiving a further indication of the network device, such as by using an index of j or b or m included in the PUSCH scheduling information;
  • the transmission mode and/or transmission configuration is determined by itself, for example, based on at least one of numerology, beam information, or transmission service information.
  • the transmission mode and/or the transmission configuration may be carried in the high layer signaling or may be carried in the downlink control information.
  • the transmission configuration of the present application includes a transmission beam, a transmission waveform (such as cyclic prefix Orthogonal Frequency Division Multiplexing (CP-OFDM), Discrete Fourier Transform-based Orthogonal Frequency Division Multiplexing (DFT-S-OFDM), etc.), and a transmission service ( At least one of URLLC, eMBB, etc., numerology, partial bandwidth BWP, carrier, time domain length, time slot set, and the like.
  • the beam information may be represented by an SRS resource identifier.
  • Corresponding relationship between the above j or b or m and the first parameter, and/or the correspondence between the j or b or m and the transmission mode and/or the transmission configuration may be pre-defined by the protocol, and are pre-stored on the network device and the terminal device side, It can be configured to the terminal device through the network device. Then there may be three ways:
  • the configuration information may further include at least two first parameters corresponding to the indications of the at least two first parameters.
  • the configuration information may further include a transmission mode and/or transmission configuration information (or transmission mode and/or transmission) corresponding to the at least two first parameters corresponding to the indications of the at least two first parameters.
  • the index or identifier corresponding to the configuration information may have similar meanings unless otherwise specified, and may be substituted for each other.
  • the network device can configure the terminal device with a transmission configuration for power and/or PH calculations.
  • the network device may configure the terminal device with a specific synchronization signal SS, a specific SSB and/or CSI-RS resource, an enhanced mobile broadband eMBB service, a bandwidth portion BWP, a numerology, and the like.
  • the configuration information may further include at least two first parameters corresponding to the indications of the at least two first parameters, and corresponding transmission modes and/or transmission configuration information (or transmission modes and/or Transfer the index or identifier corresponding to the configuration information).
  • the network device may send the indication information to the terminal device, where the indication information indicates the second parameter
  • the second parameter is used for the uplink data channel power, the uplink control channel power, the uplink reference signal power, or the power when the time unit i is not used for transmitting and transmitting the uplink data channel, the uplink control channel, or the uplink reference signal. Determination of at least one of the balances;
  • the indication information may be an index (also referred to as a number or identifier or a value) of j (also referred to as j 0 or reference j) corresponding to the time corresponding to P O_PUSCH and/or ⁇ when the time unit i is not used for transmitting the PUSCH, and / or, the time unit i is not used to transmit the PUCCH index of b corresponding to P O_PUCCH (also called number or identity or value) (abbreviated as b 0 or reference b), and / or, time unit i is not used for transmission
  • the indication information may be a transmission mode and/or transmission configuration information (or index) corresponding to P O_PUSCH and/or ⁇ when the time unit i is not used for transmitting the PUSCH, and/or, the time unit i is not used for transmission.
  • P O_PUCCH corresponds to transmission configuration information (or index)
  • the indication information is also included in the configuration information.
  • the second parameter is one of the at least two first parameters. That is, the index of j corresponding to P O_PUSCH and/or ⁇ when the time unit i is not used for transmitting the PUSCH may be one of the indexes of j included in the foregoing configuration information.
  • the index of b corresponding to the P O_PUCCH when the time unit i is not used for transmitting the PUCCH may be one of the indexes of b included in the foregoing configuration information.
  • the index of m corresponding to P O_SRS (and/or ⁇ SRS ) when the time unit i is not used for transmitting the SRS may be one of the indexes of m included in the foregoing configuration information.
  • the terminal device can determine the second parameter according to the value of j and/or b and/or m, or the transmission mode and/or the transmission configuration information (or index), thereby determining the power of the PUSCH on the time unit i, PUCCH At least one of power, SRS power, or power headroom.
  • the corresponding protocol description may be as follows, wherein the cell (or field) Jforvirtual is used to indicate that the time unit i is not used for transmitting the PUSCH
  • the indication information of the index of j corresponding to P O_PUSCH and/or ⁇ (in the present application, P O is also referred to as p0, ⁇ is also referred to as alpha).
  • One of j such as one of 0, 1, 2, the specific value can be determined according to needs.
  • the indication information indicates the transmission mode and/or the transmission configuration information, and the indication information is included in the configuration information as an example.
  • the corresponding protocol description may be as follows, where the cell (or field) Propertyforvirtual is used to indicate the time unit i
  • the configuration information also includes the index of j, the P O_PUSCH and/or ⁇ (p0, alpha) corresponding to j, and the corresponding transmission mode and/or transmission configuration information (Property).
  • the PL of the terminal device is obtained based on resource information configured for the path loss measurement by the network device.
  • k has a correspondence relationship with a resource of a reference signal (RS) for measuring path loss
  • the subscript 0, 1, 2, ... (also referred to as an index) of k may correspond to resources of different parameter paths (RS) for measuring path loss.
  • the network device sends configuration information to the terminal device, where the configuration information indicates at least two first parameters corresponding to dynamic scheduling, where the first parameter is information of a resource that measures path loss.
  • the information about the resource that measures the path loss may be information about a resource of a reference signal that measures path loss, such as an identifier of a resource of the reference signal.
  • the configuration information may include information about the resource that measures path loss.
  • the configuration information may include an index of k corresponding to the information of the resource that measures the path loss.
  • the correspondence between the index of k and the information of the resource that measures the path loss may be defined in advance and stored in the network device and the terminal device.
  • the mapping between the index of the resource and the information of the resource that is used to measure the path loss may also be configured by the network device to the terminal device.
  • the information about the resource that measures the path loss is included in the configuration information.
  • an index of k corresponding to the information of the resource that measures the path loss is included in the configuration information.
  • the information of the resource that measures the path loss may be channel state information reference signal CSI-RS resource information.
  • the information of the resource for measuring the path loss may also be related to the beam information, such as the downlink beam information or the uplink beam information.
  • the configuration information may include beam information, and the information of the beam information and the resource for measuring the path loss has Correspondence relationship.
  • the method of determining the PL may include:
  • the network device sends indication information to the terminal device, the indication information indicating one of the at least two first parameters.
  • the terminal device determines, based on the indication information, a second parameter (also referred to as a reference PL) when the time unit i is not used to transmit at least one of an uplink data channel, an uplink control channel, or an uplink reference signal.
  • a second parameter also referred to as a reference PL
  • the terminal device may determine, according to the second parameter, at least one of uplink data channel power, uplink control channel power, uplink reference signal power, or power headroom on the time unit i.
  • the indication information may include an index of k, or information of a resource that measures path loss, or at least one of beam information.
  • the second parameter may be CSI-RS resource information.
  • the network device may send a CSI-RS corresponding to the CSI-RS resource, and the CSI-RS is processed in an overlay priority manner, for example, the CSI-RS corresponding to the CSI-RS resource is not beamformed.
  • the path loss of the PH calculated by the terminal device may be larger than the path loss of the real transmission, resulting in a low PH result, so that the network device determines that the terminal device is configured with less resources, so that the resource utilization of the system is low; or
  • the CSI-RS resource information corresponding to the second parameter corresponds to a CSI-RS that is beamformed BF-ed, so that the aforementioned problem of low resource utilization can be avoided.
  • the beamforming of the measurement resources used by the terminal equipment to calculate the path loss of the PH may be different from the beamforming of the measurement resources when the data is actually transmitted. Since the gain of the beam is high, the path loss between the two resources may be compared. Large differences, which may also cause the network device configuration resources to be higher or lower.
  • the beam information corresponding to the second parameter may be downlink beam information, for example, a time index of the synchronization signal block SSB.
  • the SSB specified by the network device to the terminal device may be the OFDM symbol number in which the SSB is located.
  • the value of the second parameter (PL) is obtained by causing the terminal device to receive the power RSRP by the reference signal measured on the SSB corresponding to the specific symbol number.
  • the network device uses a beamforming technology with a relatively low beam gain and a relatively wide beam coverage for the SSB, and the beam of the real data transmission of the terminal device may be a beam with a higher beam gain within the coverage of the SSB. In this way, the path loss calculated by the terminal device according to the specific SSB is smaller than the path loss of the real data transmission of the terminal device.
  • the beam information may be uplink beam information, such as information of an uplink PUSCH beam.
  • the uplink beam information may be indicated by an SRS resource, as indicated by a resource number of the SRS, or may be indicated by a resource number of the CSI-RS.
  • the network device can identify the SRS resource index (SRI) by indicating a specific PUSCH beam to the terminal device, such as a specific SRS resource.
  • SRI SRS resource index
  • the network device may indicate, to the terminal device, the beam resource used in the downlink transmission, and the terminal device uses the corresponding relationship between the downlink transmission beam resource and the uplink transmitted beam resource to determine the beam resource used in the downlink transmission.
  • the terminal device measures the path loss by using the beam resource used for the downlink transmission as a downlink signal corresponding to the reference for determining the second parameter.
  • the terminal device calculates the power or PH by using the path loss as a second parameter. In this way, the PH at the time when the terminal device performs uplink transmission by receiving the symmetric uplink beam and downlink is reasonable.
  • the UE may also have a downlink beam indication, and the UE may fully utilize the downlink beam indication to obtain the measurement resource for measuring the path loss.
  • l is an influence factor of f, g, and/or h.
  • the network device sends configuration information to the terminal device, where the configuration information indicates at least two first parameters for dynamic scheduling, where the first parameter is f, g, and/or h.
  • the configuration information may indicate at least two f;
  • the configuration information may indicate at least two g;
  • configuration configuration information may indicate at least two h.
  • the index of the l has a corresponding relationship with the f, g, and/or h.
  • the corresponding relationship may be pre-defined by the protocol, and may be pre-stored on the network device and the terminal device side, or may be configured to the terminal device by using the network device.
  • the configuration information indicates at least two first parameters that are used for dynamic scheduling, and may include:
  • the configuration information includes an index of l corresponding to at least two first parameters of the dynamic scheduling.
  • the configuration information may further include at least two first parameters corresponding to the index of 1.
  • the method of determining the second parameter can include:
  • the network device sends indication information to the terminal device, where the indication information indicates the second parameter
  • the second parameter is used for the uplink data channel power, the uplink control channel power, the uplink reference signal power, or the power when the time unit i is not used for transmitting and transmitting the uplink data channel, the uplink control channel, or the uplink reference signal. Determination of at least one of the balances;
  • the indication information may be an index of 1 corresponding to the second parameter.
  • the indication information may be included in the configuration information, or may not be included in the configuration information.
  • the second parameter is one of the at least two first parameters.
  • the foregoing protocol description is performed by using the indication information that the configuration information of the at least two first parameters includes the second parameter, and the indication information of the second parameter may also be different from the configuration information.
  • the signaling may be sent through RRC signaling or through a MAC CE.
  • the network device indicates the value of the second parameter to the terminal device.
  • the second parameter may be one of at least two first parameters, or may be different from at least two first parameters.
  • the value of one or the second parameter of the at least two first parameters indicated by the network device may be related to the capability of the terminal device and/or the second parameter of the terminal device preference, for example, The network device may determine the value of one or the second parameter of the at least two first parameters indicated to the terminal device according to the support level of the terminal device for the capability of transmitting the service, the transmission beam, and the like, or the second parameter of the terminal device preference.
  • the terminal device may report the support of its transmission service and/or transmission beam, and/or the terminal device may notify the network device of the second parameter of its preference, and the specific notification manner Reference may be made to the direct or indirect indication of the foregoing first parameter, and details are not described herein.
  • the network device can have a clear understanding of the parameter used by the terminal device to determine the power or power headroom, and can require the terminal device to use the new parameter value when the parameter needs to be changed. To calculate, to ensure that there is a certain network device controllability, it is convenient for the network device to differentiate the terminal devices of different needs and scenarios.
  • the terminal device is based on an impact factor corresponding to the first parameter or the first parameter used in the previous dynamic scheduling on the time unit i that is not used to transmit at least one of the uplink data channel, the uplink control channel, or the uplink reference signal,
  • a second parameter on time unit i is determined, such as at least one of j, b, m, k or l, or other information corresponding to the first parameter, such as transmission mode and/or transmission configuration information, beam information, and the like.
  • the information of the used j used to determine the PUSCH power when transmitting the PUSCH is used as j 0 , and/or the information of b used for determining the PUCCH power when transmitting the PUCCH is used as b 0 And/or information identifying the m used by the SRS power as the m 0 when transmitting the SRS, and/or determining the information of k used by the PL as k 0 , and/or determining f, g, and/or,
  • the information of l used by h is taken as l 0 .
  • the second parameter on the time unit i is determined according to at least one of j 0 , b 0 , m 0 , k 0 , l 0 .
  • At least one of j, b, m, k or l can be indicated by the downlink control information sent by the network device to the terminal device.
  • the information of j, b, m, k or l used may be directly carried, or the information of j, b, m, k or l may be indirectly indicated by other information.
  • the value of j, b, or m is indirectly indicated by the transmission mode and/or the transmission configuration information
  • the information of k is indirectly indicated by the beam information.
  • the scheme for indirectly indicating this part can refer to the description in the first method, and will not be described here.
  • the terminal device determines the PL according to the measurement resource corresponding to the latest beam, or determines the PL according to the value of the last time k to improve the accuracy of the PL.
  • the measurement resource may be an SSB or a CSI-RS resource.
  • the reason is that when the terminal device does not receive the corresponding beam indication of the time unit i, the terminal device can receive and/or transmit according to the previous beam. Such a beam is relatively stable for the currently possible transmission of the terminal device.
  • the terminal device does not receive the uplink scheduling information (also referred to as UL grant)
  • the terminal device still maintains the previous calculation of multiple PL(k) at this time, because the terminal device still follows the previous assumption.
  • the reception beam is formed, and therefore, the PL calculated based on the measurement resource corresponding to the last used k or k is more accurate.
  • the terminal device and the network device should have a consistent understanding of the most recent beam.
  • the terminal device is based on the first parameter used by the latest dynamic scheduling (or the impact factor corresponding to the first parameter or other information corresponding to the first parameter, such as transmission mode and/or The transmission configuration information, and/or the beam information) determines the second parameter.
  • the terminal device determines the second parameter based on one of the at least two first parameters according to a protocol predefined.
  • the determining method 3 may be applied to each of the foregoing first parameters, and the determining method 3 may be applied to the part of the foregoing various first parameters.
  • the network device can configure at least one set of parameters for the default transmission characteristics.
  • the terminal device can calculate the PH according to a default set of first parameters.
  • the terminal device can calculate the PH by receiving the default first parameter (refer to the first parameter) without receiving at least two (two) first parameters of the foregoing.
  • the default (predefined) first parameter may be a reference first parameter corresponding to one carrier of one serving cell.
  • each carrier may have its corresponding reference first parameter. That is, the mode can be combined with the determination of the serving cell and/or carrier.
  • the carrier may be indicated by transmitting configuration information, or may have only one carrier (ie, no indication) and/or only one serving cell. For details, refer to the descriptions of other parts in this application.
  • the protocol may pre-define a first parameter used to determine the second parameter, or an impact factor of the first parameter, or other information corresponding to the first parameter, such as a transmission mode and/or a transmission configuration information, And/or, beam information, etc.
  • the PH is calculated by default according to a specific transmission configuration.
  • the terminal device can perform PH calculation according to the resource number of the predefined measurement resource.
  • the measurement resource may be an SSB or a CSI-RS resource.
  • the network device does not send information to the terminal device to inform which (or group) of the first parameter is the default parameter.
  • the implementation of the terminal device is relatively simple, but it is not compatible with the capabilities and requirements of different terminal devices.
  • the resource that is predefined by the protocol and determines the second parameter PL may be on the serving cell or on another serving cell.
  • the above determination methods one to three are based on network device indication or protocol pre-definition.
  • the second parameter used can be selected by the terminal device itself.
  • the terminal device may notify the network device of the information corresponding to the second parameter used by the terminal device.
  • the determining method 4 may be applied to each of the foregoing second parameters, and the determining method 4 may be applied to the part of the foregoing various second parameters.
  • the terminal device can choose which p0, alpha, PL related information (such as PL measured resource information, or beam information), and/or f/g/h.
  • the selection may be made in at least two p0 and/or alpha, PL, and/or f/g/h indicated by the received configuration information.
  • the terminal device needs to inform the network of the information corresponding to at least one of the selected p0, alpha, PL related information (such as PL measured resource information, or beam information), and/or f/g/h.
  • the device for example, the j/b/m/k/l, the specific p0/alpha/PL related information/f/g/h value, or the corresponding transmission mode and/or transmission configuration information that the terminal device can use.
  • At least one of the notifications informs the network device.
  • the terminal device can report the information at the same time when reporting the PHR.
  • the terminal device can select a beam resource that the terminal device considers appropriate.
  • the beam resource corresponds to j/b/m/k/l.
  • the beam resource may correspond to a measurement resource.
  • the terminal device can determine the value of the second parameter PL.
  • the terminal device may determine PL related information for determining the reference PL based on a combination of one or more of the following manners, and thereby determine the reference PL based on the PL related information:
  • the path loss corresponding to the selected beam resource exceeds the threshold
  • the path loss corresponding to the selected beam resource does not exceed the threshold
  • select the beam resource is optimal, for example, the path loss is the smallest, and the receiving power is the highest.
  • the foregoing threshold value may be pre-defined by the protocol, stored in the terminal device and/or the network device, or configured to the terminal device through the network device.
  • the second parameter determination method may be used alone or in combination.
  • a plurality of methods can be combined.
  • the terminal device may select a beam resource that the terminal device considers to be reported, and the network device may configure, for the terminal device, a transmission configuration other than the beam resource (or a first parameter (or indication) for determining the second parameter).
  • the parameter J can be obtained according to the combination of the terminal device selection beam resource and the transmission configuration of the network device configuration.
  • each of the second parameters as an example, and optionally, the influence factors of the various second parameters, such as j, may be used. Determining a correspondence between at least two of b, m, k, and l, so that the terminal device can be made aware of other values by indicating to the terminal device the value of one of the impact factors or the terminal device determining the value of one of the impact factors. The value of the influence factor, which in turn determines various second parameters.
  • mappings may be pre-defined and exist in the network device and the terminal device, or may be configured to the terminal device by using the network device.
  • the specific storage mode or configuration mode is not limited herein.
  • the above correspondence can be configured (or indicated) when the first parameter is configured by the network device.
  • the transmission mode and/or transmission configuration (such as beam information) is consistent.
  • the b 0 that determines the PUCCH power on the time unit i and the j 0 that determines the PUSCH correspond to the same transmission configuration.
  • the beam corresponding to b 0 should be the same as the beam corresponding to j 0 .
  • the above determining manners one to four are either determined separately by various second parameters or determined according to the correspondence between the second parameters.
  • one of the PUSCH and the PUCCH may be applied to the case where there is dynamic scheduling information. For example, it can be used for the calculation of the type 2PH when there is PUSCH but no PUCCH transmission, or the PH of type 2 when there is PUCCH but no PUSCH transmission.
  • the second parameter of the channel that is not transmitted on time unit i can be determined based on the first parameter used by the channel transmitted on the time unit.
  • the transmission mode and/or transmission configuration information corresponding to the second parameter of the channel not transmitted on the time unit i is consistent with the transmission mode and/or transmission configuration information corresponding to the first parameter used by the channel transmitted on the time unit. of.
  • the partial second parameter determining the PUCCH power may be determined according to the first parameter used by the PUSCH.
  • k and/or l corresponding to the PUCCH may use k and/or l corresponding to the current time unit PUSCH.
  • the P o (b) corresponding to the PUCCH may be obtained according to the j corresponding to the current time unit PUSCH and the correspondence between j and b;
  • the P o (b) corresponding to the PUCCH may be obtained based on a transmission manner and/or transmission configuration information of the j corresponding to the current time unit PUSCH.
  • the PUCCH may be transmitted by default according to the transmission characteristic assumption (transmission mode and/or transmission configuration information) of the beam transmitting the PUSCH.
  • the partial second parameter determining the PUSCH power can be determined according to the first parameter used by the PUCCH.
  • k and/or l corresponding to the PUSCH may use k and/or l corresponding to the current time unit PUCCH.
  • P o (j) corresponding to the PUSCH may be obtained according to b corresponding to the current time unit PUCCH and the corresponding relationship between j and b;
  • the P o (j) corresponding to the PUSCH may be obtained based on a transmission mode and/or transmission configuration information of b corresponding to the current time unit PUCCH.
  • the terminal device does not obtain the relevant information of the PUSCH
  • the PUSCH may be transmitted by default according to a transmission characteristic assumption (transmission mode and/or transmission configuration information) such as a beam transmitting the PUCCH.
  • the parameters used for calculating the PH correspond to the same transmission configuration.
  • Step 301 Configuration of the power control parameter, that is, obtaining the first parameter
  • the first parameter can include:
  • the network device can configure the maximum transmit power of the terminal device allowed by the network device for the terminal device. However, the maximum transmit power that is ultimately used to determine the power of the transmitted signal is calculated by the terminal device according to the maximum transmit power that the terminal can support, the maximum transmit power configured by the network device, and the like. For example, the maximum transmit power of the terminal device configuration shall not exceed the maximum transmit power that the terminal device can support, nor exceed the maximum transmit power allowed by the network device configuration.
  • the maximum transmit power that the network device configures for the terminal device may be the maximum transmit power assumed by Orthogonally Transmitted Power (TRP) or Authentic Isotropic Radiated Power (EIRP).
  • the network device can configure at least one P0 value for the PUSCH and the PUCCH.
  • the P0 value of the SRS may be multiplexed with the P0 value of the PUSCH or separately configured for the SRS.
  • the P0 value may include P0 at the cell level and P0 at the terminal device level, and may also include a common P0, and P0 corresponding to a specific transmission characteristic. When the network device configures more than one P0 value for the terminal device, these P0 values may correspond to different transmission configurations.
  • the transmission configuration in this application refers to a general term of at least one transmission configuration, which may be a transmission beam, a transmission waveform (such as CP-OFDM, DFT-S-OFDM, etc.), and a transmission service (such as URLLC, At least one of eMBB, etc., numerology, partial bandwidth BWP, carrier, time domain length, time slot set, and the like.
  • a transmission waveform such as CP-OFDM, DFT-S-OFDM, etc.
  • a transmission service such as URLLC, At least one of eMBB, etc., numerology, partial bandwidth BWP, carrier, time domain length, time slot set, and the like.
  • the beam in the present application can be identified by the resource ID, port number, time domain identifier, frequency domain identifier, pattern identifier, precoding matrix identifier, and the like of the signal.
  • ⁇ is an adjustment factor of path loss, which is generally used to adjust the degree of path loss compensation, and can be used to suppress strong interference of high transmission power of near-point users.
  • the general path loss factor is used to multiply the path loss to adjust the compensated path loss value.
  • the value range may be a positive number of [0, 1] or a number greater than 1.
  • the network device can also configure multiple alpha values, each of which can correspond to different transmission characteristics. ⁇ can also be written as alpha.
  • P0, alpha network device configuration is used for 1) semi-static or grant free transmission, 2) msg3 transmission, 3) respective P0, alpha of grant based transmission (ie dynamic transmission).
  • the corresponding P0 and alpha are respectively configured.
  • This J group of parameters does not contain static or grant free transmissions, or msg3 transmission corresponding parameters.
  • at least one set of parameters of the J group parameter corresponds to a semi-static or grant free transmission
  • at least one set of parameters corresponds to a msg3 transmission
  • at least one set of parameters corresponds to a grant-based transmission.
  • the network device needs to notify the number of power control parameters (number of groups), and specific each group of parameters.
  • the network device configures at least one set of parameters for dynamic transmission, the at least one set of parameters being a subset of the J sets of parameters.
  • This at least one set of parameters corresponds to a specific transport configuration.
  • This correspondence can be notified to the terminal device in two ways.
  • the specific parameter value range in the example is not limited herein, but is merely an example.
  • the configuration range of the P0 example here is -126 to 24, and this value is not limited herein.
  • the transmission beam in the transmission configuration may be an uplink or downlink beam resource indication, and may specifically be an SRS resource (such as SRI), a CSI-RS resource (CRI), or an SS block indication (such as an SSB index, Flag) and so on, j can be configured or not configured.
  • the terminal device can know the current transmission configuration according to the current scheduling information. So that know which set of parameters to use, so the specific value of j can not be configured.
  • the specific parameter value range in the example is not limited herein, but is merely an example.
  • the transport configuration can be left unconfigured.
  • the network device since the network device does not have a correspondence between the explicit parameters and the transmission configuration, it is necessary to indicate which j corresponding power control parameter is used by the terminal device. If the network device configures a certain transmission beam for the terminal device, the j device indicates that the terminal device obtains the corresponding power control parameter, and the power control parameter corresponds to the current transmission beam.
  • the closed loop power control parameter of the terminal device can be obtained by using the closed loop power control indication information in the downlink control information.
  • the closed loop power control indication information includes an adjustment signaling TPC of the closed loop power control adjustment value.
  • the application also provides a method for indicating power control information or a method for power control. The method can be applied independently or in combination with other embodiments in the application or other parts of the embodiment.
  • the DCI can carry at least one terminal device, at least one serving cell, at least one carrier, at least one channel or signal, corresponding to closed loop power control information of at least one (group) of antenna ports.
  • the terminal device, the serving cell, the carrier, the channel, the signal, the antenna port, and the like may be instructed to the terminal device by the network device, so that the terminal device knows which user, serving cell, carrier, channel, signal, and antenna port corresponding to the TPC.
  • the network device may indicate to the terminal device the identification information of the cell, the carrier, the channel, the signal, the antenna port, and the like, and the corresponding TPC.
  • the network device may indicate the carrier number and the TPC in the DCI, so that the terminal device can know which carrier the indicated TPC is for according to the indicated carrier number and TPC.
  • the network device may indicate the indication information of the carrier and the TPC in the DCI, and the terminal device knows which carrier the TPC is for by using the correspondence between the indication information and the specific carrier number.
  • TPC information of multiple users can be carried, and users (such as terminal devices) can obtain their own TPC information according to their own RNTI scrambling information.
  • One RNTI of a user (such as a terminal device) may correspond to a TPC of multiple carriers, and carrier information corresponding to each TPC may be carried in a DCI, or multiple RNTIs of one user (such as a terminal device) may correspond to TPCs of multiple carriers. information.
  • a user (such as a terminal device) can acquire one or more TPC information in one DCI information.
  • the method 1 of the power control (or power control information indication) provided by the application may include:
  • the terminal device receives downlink control information, where the downlink control information includes power control information of a channel or a signal.
  • the terminal device determines, according to the downlink control information, a channel or a signal corresponding to the power control information included in the downlink control information (that is, a power control of a channel or a signal used).
  • the method may include:
  • the network device sends downlink control information, where the downlink control information includes power control information of a channel or a signal.
  • the downlink control information has a corresponding relationship with a channel or a signal corresponding to the power control information.
  • the terminal device determines a channel or a signal corresponding to the power control information included in the downlink control information according to the downlink control information and the corresponding relationship between the downlink control information and the channel or the signal corresponding to the power control information.
  • the correspondence includes one or more of the following:
  • the format of the downlink control information has a corresponding relationship with a channel or a signal corresponding to the power control information included in the downlink control information;
  • the scrambling information of the downlink control information has a correspondence relationship with a channel or a signal corresponding to the power control information included in the downlink control information.
  • the application also provides a method 2 of power control (the manner of multiplexing indication), which may include:
  • the terminal device receives configuration information (also referred to as indication information) from the network device, where the configuration information indicates power control of the first channel or signal, such as SRS, and a second channel or signal, such as PUSCH or PUCCH.
  • the power control satisfies the association (which may also be referred to as having a binding relationship, or being a coupling relationship, or applying at least one of the same parameters (including one or more)).
  • the terminal device obtains power control information of the first channel or signal, such as SRS, based on the power control information for the second channel or signal, such as the PUSCH or the PUCCH, according to the configuration information, or is based on The power control information of the channel or signal, such as SRS, obtains power control information for the second channel or signal, such as PUSCH or PUCCH.
  • the power control information may be power adjustment value information.
  • the network device side may include:
  • the network device determines a relationship between power control information of the second channel or signal, such as PUSCH or PUCCH, and power control information of the first channel or signal, such as SRS;
  • the network device sends the configuration information to the terminal device, where the configuration information indicates that the power control of the first channel or signal, such as the SRS, is related to the power control of the second channel or signal, such as PUSCH or PUCCH. It can also be called a binding relationship, or a coupling relationship, or applying at least one of the same parameters (including one or more).
  • the power control information of the first channel or the signal may have a certain correspondence or mapping relationship with the power control information of the second channel or the signal, such as the PUSCH or the PUCCH, for example, a function relationship, or a table correspondence. relationship.
  • the terminal device applies power control information of the second channel or signal, such as a PUSCH or a PUCCH, to a second channel or a signal, such as a PUSCH or a PUCCH, and/or applies the The power control information of the two channels or signals, such as PUSCH or PUCCH, is power controlled for the first channel or signal, such as SRS.
  • the terminal device applies power control information of the first channel or signal, such as SRS, to power control of the first channel or signal, such as SRS, and/or applies the first channel or signal, such as SRS,
  • the power control information is power controlled for the second channel or signal, such as PUSCH or PUCCH.
  • the configuration information may be carried in a high layer signaling, such as a radio resource control RRC signaling or a medium access control control element MAC CE.
  • a high layer signaling such as a radio resource control RRC signaling or a medium access control control element MAC CE.
  • the configuration information may also be carried in physical layer signaling, such as downlink control information.
  • the power control of the first channel or signal indicated by the configuration information is related to the power control of the second channel or the signal may be associated with the power control of the specific first channel or signal and the second channel or signal ( The power control of the particular second channel or signal is satisfied.
  • the power control of the SRS indicated by the configuration information is related to the power control of the PUSCH or the PUCCH, and may be related to the power control of the specific SRS resource and/or the SRS resource group and the PUSCH or PUCCH (or the specific PUSCH or PUCCH). The power control is satisfied.
  • the specific first channel or signal such as an SRS resource and/or an SRS resource group
  • a protocol pre-defined such as having a specific first channel or signal characteristic (such as identification or scrambling or sequence).
  • the SRS resource identifier and/or the SRS resource group identifier may also be indicated by a signaling of the network device, such as by directly or indirectly indicating power control and a second channel or signal, such as PUSCH, in higher layer signaling or physical layer signaling.
  • the power control of the PUCCH which satisfies the associated first channel or signal, such as SRS resources and/or resource groups.
  • the power control method 2 provided above may be applied in combination with the method 1, or may be applied independently.
  • the application also provides a method 3 for power control, which may include:
  • the terminal device receives downlink control information, where the downlink control information includes power control information of two or more channels or signals.
  • the terminal device determines, according to the downlink control information, a channel or a signal corresponding to the power control information included in the downlink control information (that is, a power control of a channel or a signal used).
  • the method may include:
  • the network device sends downlink control information, where the downlink control information includes power control information of two or more channels or signals.
  • the downlink control information includes power control information of two or more channels or signals:
  • the power control information used in the downlink control information for different channels or signals may be indicated in different domains or fields or cells in the downlink control information, or may be in the same domain.
  • Joint directive may include indicating by different bits of the same signaling domain, where the order of the bits may correspond to a specific channel or signal, such as a higher bit of the signaling domain.
  • Power control information indicating a channel or signal such as power control information of a PUSCH, the lower bits of the signaling domain are used to indicate power control information of another channel or signal, such as power control information of the SRS.
  • the downlink control information includes a manner that the power control information of the two or more channels or signals may be the multiplexing indication in the foregoing method 2.
  • the method in the foregoing method 2 may be adopted. If the method is not used, the method in the foregoing method 3 is adopted, and whether the multiplexing is specifically performed, according to the configuration in the second method. Information to determine. I will not repeat them here.
  • the power control information may be different from the power control information corresponding to the channel or the signal, and may also be the power control information corresponding to the specific channel or signal, which is not limited herein.
  • the value may be the first set, such as the set ⁇ -1, 0, 1, 3 ⁇ dB.
  • the power control information may be different from any channel or signal corresponding to the power control information.
  • the value of the power control information corresponding to a specific channel or signal, which is not limited herein, may be a second set, such as a set ⁇ -1, 1 ⁇ dB, where the second set may be a subset of the first set. In this way, the overhead of signaling can be reduced.
  • the closed loop power control information that can carry at least one channel or signal in the DCI includes closed loop power control (TPC) information carrying a channel or a signal in the DCI, or a closed loop carrying multiple channels or signals in the DCI.
  • TPC closed loop power control
  • Power control information In the present application, "a plurality" means two or more.
  • the closed loop power control information that can carry at least one channel or signal in the DCI includes closed loop power control (TPC) information carrying a channel or a signal in the DCI, or a DCI carrying multiple channels or signals.
  • Closed loop power control information "Multiple" in the present application means two or more.
  • the closed loop power control information that carries a channel or a signal in the DCI includes closed loop power control information that carries a specific channel or signal in the DCI, where the specific channel or signal may be a PUSCH, or a PUCCH, or an SRS. .
  • the terminal device receives the DCI, and according to the rule and/or the indication information, determines which channel or signal (ie, which channel or signal is used for power control or adjustment) of the TPC information in the DCI.
  • the terminal device determines, according to the format of the DCI, which channel or signal the TPC information carried in the received DCI corresponds to, in this case, the format of the DCI and the channel or signal corresponding to the TPC information carried by the DCI.
  • the terminal device determines the channel or signal corresponding to the TPC information carried in the received DCI according to the received DCI format and the corresponding relationship.
  • the TPC carried in the DCI is a corresponding PUSCH
  • the first format may be a DCI format for scheduling a PUSCH
  • the second format may be a DCI format for scheduling a PDSCH (downlink data channel)
  • the third format the DCI is carried in the DCI.
  • the TPC is corresponding to the SRS
  • the third format may be a DCI format for scheduling the SRS; in addition, it may be a correspondence between other formats and channels or signals, not exemplified.
  • the terminal device determines, according to the scrambling information of the DCI, which channel or signal the TPC information carried in the received DCI corresponds to.
  • the scrambling information of the DCI corresponds to the TPC information carried by the DCI.
  • the channel or the signal has a corresponding relationship, and the terminal device determines the channel or signal corresponding to the TPC information carried in the received DCI according to the received DCI's scrambling information and the corresponding relationship.
  • the TPC carried in the DCI is a corresponding PUSCH, and the first scrambling information may be an RNTI related to the PUSCH; and/or
  • the TPC carried in the DCI is the corresponding PUCCH, and the second scrambling information may be the RNTI related to the PUCCH; in addition,
  • the correspondence between the other scrambling information and the channel and the signal, for example, the scrambling information may also be the scrambling information corresponding to the SRS, not exemplified.
  • the terminal device determines, according to the SRS-related configuration information from the network device, which channel or signal the TPC information carried in the received DCI corresponds to. For example, when the configuration information received by the terminal device from the network device indicates that the power control of the SRS is associated with the power control of the PUSCH, or has a binding relationship, or is a coupling relationship, or applies at least one of the same parameters (
  • the closed loop power control information corresponding to the TPC obtained by the terminal device in the DCI corresponds to the closed loop power control adjustment value of the PUSCH, and the function of the closed loop power control adjustment value corresponding to the closed loop power control information may also be used.
  • the power control of the SRS the function of which may be that the output value is equal to the input value, or the output value is equal to the linear transformation of the input value (such as the sum of the input value and the constant), or the output value has a mapping relationship with the input value (eg according to the table) Or at least one of the formula or the string obtains a specific value of the input value and has a corresponding relationship with the value of the output value).
  • the terminal device When the configuration information of the network device received by the terminal device indicates that the power control of the SRS is not associated with the power control of the PUSCH, or is not bound, or is not coupled, or the parameters are not completely the same, the terminal device is The closed-loop power control information corresponding to the TPC obtained in one DCI only corresponds to the closed-loop power control adjustment value of the control PUSCH, and the closed-loop power control information corresponding to the TPC obtained by the terminal device in another DCI only corresponds to the closed-loop power control adjustment of the control SRS. value.
  • the one DCI and the other DCI may be distinguished by using the scrambling information of the DCI, and may be distinguished by other means, which is not limited herein.
  • the configuration information may be carried in higher layer signaling.
  • the power control used to indicate the SRS is associated with the power control of the PUSCH, or has a binding relationship, or is a coupling relationship, or one or more of the indication information applying the same parameter (referred to as a binding indication).
  • the indication information indicating that the power control of the SRS is not associated with the power control of the PUSCH, or has no binding relationship, or has no coupling relationship, or applies parameters that are not identical. Not bound to the indication), directly indicated in the configuration information.
  • binding indication indicates whether the binding is not bound by an enable/disable indication of the binding indication, or an enable/disable indication of the unbound indication to indicate that the binding is not bound or Binding, for example, the binding indication is enabled, indicating binding, and the binding indication is disabled, indicating no binding, no binding indication is enabled, indicating no binding, and no binding indication Enable, indicating binding. It is also possible to indicate binding or non-binding by the presence or validity of the binding indication or the non-binding indication, such as binding indicating that there is a representation binding, non-existence indicating no binding, and so on, not Narration.
  • the method may also be extended between the SRS and the PUCCH, for example, when the terminal device receives the network device indicating that the power control of the SRS is associated with the power control of the PUCCH, or has a binding relationship, or is a coupling relationship, or When the information of the same parameter is applied, the closed loop power control information corresponding to the TPC obtained by the terminal device in the DCI corresponds to the closed loop power control adjustment value of the PUCCH, and the function of the power control adjustment value corresponding to the closed loop power control information may also be used for the SRS. Power control.
  • the terminal device determines, according to the SRS-related indication information of the DCI bearer, which channel or signal is corresponding to the TPC information carried in the received DCI. For example, the terminal device determines, according to the SRS-related indication information carried in the DCI, which channel or signal is corresponding to the TPC information carried in the received DCI.
  • the SRS related indication information may be at least one of SRS resource indication information or SRS resource request information.
  • the SRS resource indication information is information (usually an SRS resource or an SRS resource group identifier or index or number) for indicating one or more SRS resources and/or SRS resource groups.
  • the SRS resource request information is sent by the network device to the terminal device, and requests the terminal device to send the request information of the SRS.
  • association between the SRS resource or the SRS resource group and the power control of the PUSCH indicated by the SRS-related indication information may be used to determine which channel or signal the TPC information carried in the received DCI corresponds to.
  • the association relationship may be predefined by a protocol, or may be explicitly or implicitly indicated by signaling, such as higher layer signaling or physical layer signaling.
  • the explicit indication refers to the direct indication by the field or the domain in the signaling, and the terminal device can directly determine according to the signaling;
  • implicit indication refers to the indirect indication by the signaling, and the terminal device according to the signaling and has Known rules are indirectly determined.
  • the SRS resource corresponding to the SRS-related indication information, and/or the SRS resource group (such as the SRS resource group where the SRS resource is located), is associated with the power control of the PUSCH, or has a binding relationship, or Having a coupling relationship, or applying the same parameter
  • the closed loop power control information corresponding to the TPC obtained by the terminal device in the DCI corresponds to the closed loop power control adjustment value of the PUSCH, and the power control adjustment value corresponding to the closed loop power control information
  • the function can also be used for power control of SRS. The function has been described in the foregoing scheme and will not be described again.
  • the terminal device When the SRS resource and/or the SRS resource group corresponding to the SRS-related indication information is not associated with the power control of the PUSCH, or has no binding relationship, or is not coupled, or applies a parameter that is not completely the same, the terminal device
  • the closed loop power control information corresponding to the TPC obtained in one DCI only corresponds to the closed loop power control adjustment value of the SRS
  • the closed loop power control information corresponding to the TPC obtained in the other DCI only corresponds to the closed loop power control adjustment value of the control PUSCH.
  • the one DCI and the other DCI may be distinguished by using the scrambling information of the DCI, and may be distinguished by other means, which is not limited herein.
  • the terminal device determines, according to other rules, a function of the time unit, which channel or signal is corresponding to the TPC information carried in the received DCI.
  • the function may be a linear or non-linear function of a time unit, such as a modulo function of a time unit pair 2.
  • the terminal device determines whether the TPC information carried in the received DCI corresponds to which channel or signal according to whether the current time unit is an odd or even time unit.
  • the current time unit may refer to a time unit that receives the DCI, or a time unit scheduled by the DCI, or a time unit of the channel or signal transmission.
  • the terminal device may be used independently or in combination, for example, the terminal device according to the DCI format, the DCI scrambling information, the network device's SRS-related configuration information, the DCI-bearing SRS-related indication information, and other rules. At least two of the functions of the time unit, etc., determine which channel or signal the TPC information carried in the received DCI corresponds to. For example, the terminal device jointly determines, according to the scrambling information of the DCI and the indication information carried in the DCI, which channel or signal is corresponding to the TPC in the DCI.
  • the terminal device when the scrambling information is the scrambling information related to the PUSCH, the terminal device further determines, according to whether the SRS-related indication information carried in the DCI satisfies the foregoing requirement, the closed-loop power control information carried in the DCI is only
  • the power adjustment for the PUSCH can also be used for the power adjustment of the PUSCH and the SRS.
  • the terminal device determines that the closed loop power control information carried in the DCI is the power for the SRS. Adjusted.
  • the meaning of the closed-loop power control information or the closed-loop power control adjustment value corresponding to “A” is that the closed-loop power control information or the closed-loop power control adjustment value can be used for the closed-loop power control or adjustment of A, where A can be PUSCH, or At least one of SRS, or PUCCH.
  • the closed loop power control information that carries multiple channels or signals in the DCI may include:
  • the DCI carries closed loop power control information of multiple channels or signals, where multiple channels or signals may include two or more of PUSCH, PUCCH, or SRS.
  • the number of each channel or signal is not limited herein.
  • the terminal device receives the DCI, and determines, by rules and/or indication information, etc., which channel or signal corresponds to one or more TPC information in the DCI. Among them, a plurality refers to two or more.
  • the closed loop power control information of the PUSCH and the SRS may be carried in the DCI.
  • the terminal device obtains closed loop power control information of the PUSCH and the SRS carried by the DCI according to the configuration information of the network device.
  • the DCI can carry closed loop power control information of the PUSCH and the SRS.
  • the terminal device obtains closed loop power control information corresponding to the PUSCH and the SRS respectively according to the indication information related to the SRS according to the indication information related to the SRS carried in the DCI.
  • the SRS related indication information may be at least one of SRS resource indication information or SRS resource request information.
  • the SRS resource indication information is information (usually an SRS resource or an SRS resource group identifier or index or number) for indicating one or more SRS resources and/or SRS resource groups.
  • the SRS resource request information is sent by the network device to the terminal device, and requests the terminal device to send the request information of the SRS.
  • association between the SRS resource or the power control of the SRS resource group and the power control of the PUSCH indicated by the SRS-related indication information may be used to determine how the TPC information carried in the received DCI is interpreted (ie, which channel is used) Or signal power control).
  • the association relationship may be predefined by a protocol, or may be explicitly or implicitly indicated by signaling, such as higher layer signaling or physical layer signaling.
  • the explicit indication refers to the direct indication by the field or the domain in the signaling, and the terminal device can directly determine according to the signaling;
  • implicit indication refers to the indirect indication by the signaling, and the terminal device according to the signaling and has Known rules are indirectly determined.
  • the SRS resource corresponding to the SRS related indication information, and/or the SRS resource group is associated with the power control of the PUSCH, or has a binding relationship, or has a coupling relationship, or applies at least the same parameter
  • the closed loop power control information corresponding to the TPC obtained by the terminal device in the DCI corresponds to the closed loop power control adjustment value of the PUSCH
  • the function of the power control adjustment value corresponding to the closed loop power control information may also be used for the power control of the SRS. The function has been described in the foregoing scheme and will not be described again.
  • the terminal device Closed loop power control information for SRS and PUSCH, respectively, can be obtained in the DCI.
  • the closed-loop power control information for the SRS and the PUSCH may be respectively indicated in different domains, or the closed-loop power control information for the SRS and the PUSCH may be jointly indicated in the same domain, and the manner of the joint indication includes
  • the order of the bits may have a correspondence with the PUSCH or the SRS, as indicated by the different bits of the same signaling domain, such as the high-order bits of the signaling domain are used to indicate the closed-loop power control information of the PUSCH, the signaling
  • the lower bits of the field are used to indicate SRS closed loop power control information.
  • the closed loop power control information has a smaller value range.
  • the closed loop power control information carried in the DCI is available for the PUSCH, or the PUSCH and the SRS (ie, the closed loop power control adjustment value of the SRS is a function of the closed loop power control adjustment value of the PUSCH)
  • the closed loop power control information is correspondingly taken.
  • the value may be a first set, such as a set ⁇ -1, 0, 1, 3 ⁇ dB; when the closed loop power control information carried in the DCI is determined for the closed loop power control adjustment values of the PUSCH and the SRS, respectively, the closed loop
  • the value corresponding to the power control information may be a second set, such as a set ⁇ -1, 1 ⁇ dB.
  • the second set may be a subset of the first set.
  • the above indications or configuration information included in high layer signaling (such as RRC or MAC CE signaling) or physical layer signaling (such as DCI) are SRS related information, and TPC information for PUSCH power control can be used for The power control of the SRS is described as an example. It can be understood that when the scheme is for high-level signaling (such as RRC or MAC CE signaling) or physical layer signaling (such as DCI), the indication or configuration information is included with the SRS.
  • Relevant information, as well as TPC information for SRS power control, may be used for power control of the PUSCH; or indications included in higher layer signaling (such as RRC or MAC CE signaling) or physical layer signaling (such as DCI) or
  • the configuration information is information related to the PUSCH, and the TPC information used for SRS power control can be used for power control of the PUSCH, or high-level signaling (such as RRC or MAC CE signaling) or physical layer signaling (such as DCI).
  • the included indication or configuration information is information related to the PUSCH, and the TPC information used for the PUSCH power control can be used for the power control of the SRS.
  • the corresponding solution in the above example may also be expanded or modified accordingly. Do not repeat them.
  • the TPC information used for B (such as SRS) power control can be used for power control of C (such as PUSCH), and can be used directly or through a certain correspondence (such as a function relationship or a table). Correspondingly) used after conversion, and will not be described here.
  • the terminal device may Interpreting the TPC carried in the DCI, which is used for the closed-loop power control of the PUSCH and the closed-loop power control of the SRS.
  • the correspondence between the specific TPC and the closed-loop power control information of the PUSCH and/or the SRS meets one of the following table or Multiple:
  • TPC Closed loop power control information for PUSCH Closed loop power control information for SRS First indication
  • the first value such as -1db
  • the fifth value such as -1db
  • the second value such as -1db
  • the sixth value such as 1db
  • the third value such as 1db
  • the seventh value such as -1db
  • the eighth value such as 1db
  • the first indication value, the second indication value, and the like refer to the indication bit information of the TPC, for example, the first indication value is 00, the second indication value is 01, the third indication value is 10, and the fourth indication value is 11.
  • the terminal device obtains a mapping relationship between the indication value of the TPC signaling and the closed loop power control information of the PUSCH and the SRS.
  • the above correspondences can also be represented or stored by formulas or strings.
  • the network device needs to notify the number of measurement resources (here, the number of PLs that the terminal device needs to maintain, the number of PL/RSRPs that the terminal device needs to measure, etc., as long as the meaning is expressed), and Specific multiple measurement resources.
  • the measurement resource indication is used to enable the terminal device to obtain the corresponding measurement resource, so that the terminal device measures the measurement resource, and obtains the loss experienced by the signal in the propagation, so that the terminal device performs power compensation when transmitting the signal, and resists the propagation. Loss.
  • the PUSCH is identified, indicating that this parameter is used by the PUSCH.
  • the PUCCH is identified, indicating that this parameter is used by the PUCCH.
  • the identifier i indicates that the parameter corresponds to the time unit i, and the time unit may be a time slot, a mini slot, a subframe, a frame, a symbol, or the like.
  • the identifier c indicates that the parameter corresponds to the serving cell c, or the carrier component c, or is used for the transmission point c (eg, DMRS group1 is transmission point 1, and DMRS group2 is transmission point 2, which can be known by different QCL indications).
  • the identifiers j and b are generally used to indicate the transmission configuration, nature, use, and the like corresponding to the parameter.
  • the identifier k is generally related to at least one uplink beam resource k, or a downlink measurement resource or the like.
  • the identifier l indicates the loop number of the closed loop parameter.
  • the identifier F indicates the format of the PUCCH.
  • Step S302 obtaining information of the reference power control parameter, that is, determining the second parameter used on the time unit i.
  • the terminal device determines the power control parameter to calculate the power and power margin.
  • This parameter is called the reference power control parameter (also called the second parameter).
  • Step S303 transmitting power margin
  • the terminal device passes the calculated power headroom to the MAC layer.
  • the terminal device triggers the reporting of the PH after the trigger condition is met.
  • the trigger condition may include a path loss change exceeding a threshold.
  • the threshold may be for one or more carriers on one or more serving cells.
  • the terminal device may also transmit the maximum transmit power information, parameter information selected by the terminal device, and the like to the network device.
  • the method of determining power in this application can also be used in transmit power.
  • the terminal device may need to transmit multiple carrier components, signals of multiple serving cells. This may result in the sum of the power of multiple carrier components and the serving cell exceeding the total transmit power of the terminal device. It is therefore also necessary to adjust the determined power such that the sum of power does not exceed the maximum transmit power. Such an adjustment may be based on not exceeding the total transmit power of the terminal device, or based on not exceeding the total transmit power on each serving cell (set) of the terminal device, or based on the total transmit power on each carrier component (set) of the terminal device.
  • signals on the serving cell may be uniformly power-scaled, or scaled by a scaling factor, or processed in a certain order to ensure higher priority.
  • the carrier component, the serving cell, or the specific channel, the power of the signal is preferentially allocated.
  • FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the above method embodiment.
  • FIG. 4 shows only the main components of the terminal device.
  • the terminal device 40 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing the communication protocol and the communication data, and controlling the entire terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to perform the actions described in the foregoing method embodiments, such as Determining a precoding matrix based on the received PMI and RI to precode the signal and transmit the precoded signal.
  • the memory is mainly used for storing software programs and data, for example, storing the correspondence between the indication information and the combination information described in the above embodiments.
  • the control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the control circuit together with the antenna can also be called a transceiver, and is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 4 shows only one memory and one processor for ease of illustration. In an actual terminal device, there may be multiple processors and multiple memories.
  • the memory may also be referred to as a storage medium or a storage device, and the like.
  • the processor may include a baseband processor and a central processing unit, and the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control and execute the entire terminal device.
  • the processor in FIG. 4 can integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus.
  • the terminal device may include a plurality of baseband processors to accommodate different network standards, and the terminal device may include a plurality of central processors to enhance its processing capabilities, and various components of the terminal devices may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and the control circuit having the transceiving function can be regarded as the transceiving unit 401 of the terminal device 40, for example, for supporting the terminal device to perform the receiving function and the transmitting function as described in part in FIG.
  • the processor having the processing function is regarded as the processing unit 402 of the terminal device 40.
  • the terminal device 40 includes a transceiver unit 401 and a processing unit 402.
  • the transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like.
  • the device for implementing the receiving function in the transceiver unit 401 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 401 is regarded as a sending unit, that is, the transceiver unit 401 includes a receiving unit and a sending unit.
  • the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
  • the processor 402 can be configured to execute instructions stored in the memory to control the transceiver unit 401 to receive signals and/or transmit signals to perform the functions of the terminal device in the foregoing method embodiment.
  • the function of the transceiver unit 401 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present disclosure, which may be a schematic structural diagram of a base station.
  • the base station can be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiment.
  • the base station 50 can include one or more radio frequency units, such as a remote radio unit (RRU) 501 and one or more baseband units (BBUs) (also referred to as digital units, DUs). 502.
  • RRU 501 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 5011 and a radio frequency unit 5012.
  • the RRU 501 portion is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting the signaling messages described in the foregoing embodiments to the terminal device.
  • the BBU 502 part is mainly used for performing baseband processing, controlling a base station, and the like.
  • the RRU 501 and the BBU 502 may be physically disposed together or physically separated, that is, distributed base stations.
  • the BBU 502 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, and the like.
  • the BBU (processing unit) 502 can be used to control the base station to perform an operation procedure about the network device in the foregoing method embodiment.
  • the BBU 502 may be configured by one or more boards, and multiple boards may jointly support a single access indication radio access network (such as an LTE network), or may support different access systems respectively. Radio access network (such as LTE network, 5G network or other network).
  • the BBU 502 also includes a memory 5021 and a processor 5022 for storing the necessary instructions and data.
  • the memory 5021 stores the correspondence relationship between the codebook index and the precoding matrix in the above embodiment.
  • the processor 5022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform an operation procedure of the network device in the foregoing method embodiment.
  • the memory 5021 and the processor 5022 can serve one or more boards. That is, the memory and processor can be individually set on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.
  • FIG. 6 shows a schematic structural diagram of a communication device 600.
  • the device 600 can be used to implement the method described in the foregoing method embodiments, and can be referred to the description in the foregoing method embodiments.
  • the communication device 600 can be a chip, a network device (such as a base station), a terminal device or other network device, and the like.
  • the communication device 600 includes one or more processors 601.
  • the processor 601 can be a general purpose processor or a dedicated processor or the like.
  • it can be a baseband processor, or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (eg, base stations, terminals, or chips, etc.), execute software programs, and process data of the software programs.
  • the communication device may include a transceiver unit for implementing input (reception) and output (transmission) of signals.
  • the communication device can be a chip, and the transceiver unit can be an input and/or output circuit of the chip, or a communication interface.
  • the chip can be used for a terminal or base station or other network device.
  • the communication device may be a terminal or a base station or other network device
  • the transceiver unit may be a transceiver, a radio frequency chip, or the like.
  • the communication device 600 includes one or more of the processors 601, and the one or more processors 601 can implement the method of the network device or the terminal device in the embodiment shown in FIG. 2.
  • the communication device 600 includes means for generating first indication information, and means for transmitting first indication information.
  • the function of generating the first indication information and the means of transmitting the first indication information may be implemented by one or more processors.
  • the first indication information may be generated by one or more processors, and the first indication information may be sent through a transceiver, an input/output circuit, or an interface of a chip.
  • the first indication information refer to the related description in the foregoing method embodiments.
  • the communication device 600 includes means for receiving first indication information, and means for determining a second parameter.
  • first indication information may be received, for example, by a transceiver, or an input/output circuit, or an interface of the chip, and the second parameter is determined by one or more processors.
  • the processor 601 can implement other functions in addition to the method of the embodiment shown in FIG. 2.
  • the processor 601 may also include instructions 603 that may be executed on the processor such that the communication device 600 performs the methods described in the above method embodiments.
  • the communication device 600 can also include circuitry that can implement the functionality of the network device or terminal device in the foregoing method embodiments.
  • the communication device 600 can include one or more memories 602 having instructions 604 stored thereon that can be executed on the processor such that the communication device 600 executes The method described in the above method embodiments.
  • data may also be stored in the memory.
  • Instructions and/or data can also be stored in the optional processor.
  • the one or more memories 602 may store the corresponding relationships described in the above embodiments, or related parameters or tables or the like involved in the above embodiments.
  • the processor and the memory may be provided separately or integrated.
  • the communication device 600 may further include a transceiver unit 605 and an antenna 606.
  • the processor 601 may be referred to as a processing unit that controls a communication device (terminal or base station).
  • the transceiver unit 605 can be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., for implementing the transceiving function of the communication device through the antenna 606.
  • the application also provides a communication system comprising one or more of the aforementioned network devices, and one or more terminal devices.
  • processors in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration.
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • RAM random access memory
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic randomness synchronous dynamic randomness.
  • Synchronous DRAM SDRAM
  • DDR SDRAM double data rate synchronous DRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory Take memory
  • DR RAM direct memory bus random access memory
  • the above embodiments may be implemented in whole or in part by software, hardware (such as circuitry), firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product comprises one or more computer instructions or computer programs.
  • the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains one or more sets of available media.
  • the usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium.
  • the semiconductor medium can be a solid state hard drive.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de communication, et un système. Le procédé consiste : à recevoir des premières informations d'indication, les premières informations d'indication indiquant au moins deux premiers paramètres, lesdits premiers paramètres étant utilisés pour déterminer une puissance de canal de données de liaison montante et/ou une puissance de canal de commande de liaison montante et/ou une puissance de signal de référence de liaison montante pendant une programmation dynamique ; à déterminer un second paramètre lorsqu'une première unité temporelle n'est pas utilisée pour émettre le canal de données de liaison montante et/ou le canal de commande de liaison montante et/ou pour émettre le signal de référence de liaison montante, le second paramètre étant une puissance nominale et/ou un facteur de réglage de perte de trajet et/ou une valeur de réglage de régulation de puissance en boucle fermée ou de perte de trajet. Le procédé s'applique à une régulation de puissance et/ou à une notification de marge de sécurité de puissance dans un système à faisceaux multiples.
PCT/CN2018/116271 2017-11-17 2018-11-19 Procédé et dispositif de communication, et système WO2019096316A1 (fr)

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EP18879324.4A EP3713311A4 (fr) 2017-11-17 2018-11-19 Procédé et dispositif de communication, et système
CN201880051777.7A CN111386734B (zh) 2017-11-17 2018-11-19 通信方法、通信装置和系统
US16/765,123 US11516754B2 (en) 2017-11-17 2018-11-19 Communication method, communications apparatus, and communications system

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CN201711148429 2017-11-17
CN201711148429.5 2017-11-17
CN201810152266.6 2018-02-14
CN201810152266.6A CN109803363B (zh) 2017-11-17 2018-02-14 通信方法、通信装置和系统

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