CN117015018A - Power control method and device, terminal and network equipment - Google Patents

Power control method and device, terminal and network equipment Download PDF

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Publication number
CN117015018A
CN117015018A CN202210448392.2A CN202210448392A CN117015018A CN 117015018 A CN117015018 A CN 117015018A CN 202210448392 A CN202210448392 A CN 202210448392A CN 117015018 A CN117015018 A CN 117015018A
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China
Prior art keywords
parameter
value
power
power control
transmission state
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CN202210448392.2A
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Chinese (zh)
Inventor
胡丽洁
李岩
温金辉
杨拓
柯颋
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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Priority to CN202210448392.2A priority Critical patent/CN117015018A/en
Publication of CN117015018A publication Critical patent/CN117015018A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power

Abstract

The application discloses a power control method and device, a terminal and network equipment, wherein the method comprises the following steps: the terminal acquires first configuration information, wherein the first configuration information is used for configuring the corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to the state of an antenna and/or a port of the network equipment; the terminal determines a value of a power control parameter corresponding to a first transmission state based on the first configuration information, and determines uplink transmission power based on the value of the power control parameter.

Description

Power control method and device, terminal and network equipment
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a power control method and apparatus, a terminal, and a network device.
Background
In order to reduce the energy consumption of the base station, the enhancement technology is introduced from the angles of time domain, frequency domain, space domain, power domain and the like in the future, so that the energy consumption of the base station is reduced. For the space domain aspect, an antenna/port number self-adaptive technology is introduced, so that the turn-off of part of antennas according to needs is realized, and the energy consumption of a base station is reduced.
However, since the uplink power control at the terminal side is related to the power of the downlink reference signal (DL RS) at the base station side, the power of the DL RS at the base station side is affected by the number of antennas/ports at the base station side, so that in the case of adopting the adaptive antenna/port number technology, an inaccurate problem may occur in the uplink power control at the terminal side.
Disclosure of Invention
In order to solve the technical problems, embodiments of the present application provide a power control method and apparatus, a terminal, a network device, a chip, and a computer readable storage medium.
The power control method provided by the embodiment of the application comprises the following steps:
the terminal acquires first configuration information, wherein the first configuration information is used for configuring the corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to the state of an antenna and/or a port of the network equipment;
the terminal determines a value of a power control parameter corresponding to a first transmission state based on the first configuration information, and determines uplink transmission power based on the value of the power control parameter.
The power control method provided by the embodiment of the application comprises the following steps:
the network device sends first configuration information, wherein the first configuration information is used for configuring the corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to the state of an antenna and/or a port of the network device.
The power control device provided by the embodiment of the application is applied to a terminal, and comprises:
the device comprises an acquisition unit, a power control unit and a control unit, wherein the acquisition unit is used for acquiring first configuration information, the first configuration information is used for configuring the corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to the state of an antenna and/or a port of network equipment;
And the determining unit is used for determining the value of the power control parameter corresponding to the first transmission state based on the first configuration information and determining the uplink transmission power based on the value of the power control parameter.
The power control device provided by the embodiment of the application is applied to network equipment, and comprises:
the transmitting unit is configured to transmit first configuration information, where the first configuration information is used to configure a correspondence between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to a state of an antenna and/or a port of the network device.
The terminal provided by the embodiment of the application comprises the following steps: the processor is used for calling and running the computer program stored in the memory, and executing any one of the power control methods.
The network device provided by the embodiment of the application comprises: the processor is used for calling and running the computer program stored in the memory, and executing any one of the power control methods.
The chip provided by the embodiment of the application comprises: and a processor for calling and running the computer program from the memory, so that the device on which the chip is mounted performs any one of the methods described above.
The core computer readable storage medium provided by the embodiments of the present application is used for storing a computer program, where the computer program makes a computer execute any one of the methods described above.
In the technical scheme of the embodiment of the application, the corresponding relation between the downlink transmission state and the power control parameter value is configured, so that when the terminal determines the uplink transmission power, the current first transmission state of the base station is considered, and the value of the power control parameter corresponding to the first transmission state is determined based on the configured corresponding relation, thereby determining the uplink transmission power based on the determined value of the power control parameter. The downlink transmission state represents the state of the antenna and/or the port of the network equipment, so that the uplink transmission power is adaptively determined according to the state of the antenna and/or the port of the network equipment, the accuracy of uplink power control of a terminal side is improved, and the problem of inaccurate uplink power control caused by the change of the number of dynamic antennas/ports is solved.
Drawings
FIG. 1 is a schematic illustration of an application scenario;
fig. 2 is a schematic diagram of CSI-RS port mapping one;
fig. 3 is a CSI-RS port mapping diagram two;
fig. 4 is a schematic flow chart of a power control method according to an embodiment of the present application;
Fig. 5 is a schematic diagram of the structural components of a power control device according to an embodiment of the present application;
fig. 6 is a schematic diagram II of the structural composition of the power control device according to the embodiment of the present application;
fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a chip of an embodiment of the present application.
Detailed Description
The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.
As shown in fig. 1, communication system 100 may include a terminal 110 and a network device 120. Network device 120 may communicate with terminal 110 over the air. Multi-service transmission is supported between the terminal 110 and the network device 120.
It should be understood that embodiments of the present application are illustrated by way of example only with respect to communication system 100, and embodiments of the present application are not limited thereto. That is, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: a 5G communication system (also referred to as a New Radio (NR) communication system), or a future communication system, etc.
In the communication system 100 shown in fig. 1, the network device 120 may be an access network device in communication with the terminal 110. The access network device may provide communication coverage for a particular geographic area and may communicate with terminals 110 (e.g., UEs) located within the coverage area.
The network device 120 may be a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, or a base station (gNB) in an NR system, or the like.
Terminal 110 may be any terminal including, but not limited to, a terminal that employs a wired or wireless connection with network device 120 or other terminals.
For example, the terminal 110 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, an IoT device, a satellite handset, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handset with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network or a terminal in a future evolution network, etc.
The wireless communication system 100 may further comprise a core network device 130 in communication with the base station, which core network device 130 may be a 5G core,5gc device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), further e.g. an authentication server function (Authentication Server Function, AUSF), further e.g. a user plane function (User Plane Function, UPF), further e.g. a session management function (Session Management Function, SMF). In the network evolution process, the core network device may also call other names, or form new network entities by dividing the functions of the core network, which is not limited in this embodiment of the present application.
Communication may also be achieved by establishing connections between various functional units in the communication system 100 through a next generation Network (NG) interface.
Fig. 1 illustrates one base station, one core network device, and two terminals, alternatively, the wireless communication system 100 may include a plurality of base station devices and may include other numbers of terminals within the coverage area of each base station, which is not limited by the embodiment of the present application.
It should be noted that fig. 1 is only an exemplary system to which the present application is applicable, and of course, the method shown in the embodiment of the present application may be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should also be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B. It should also be understood that "corresponding" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, may mean that there is an association between the two, and may also be a relationship between an instruction and an indicated, configured, or the like. It should also be understood that "predefined" or "predefined rules" mentioned in the embodiments of the present application may be implemented by pre-storing corresponding codes, tables or other means that may be used to indicate relevant information in devices (e.g., including terminals and network devices), and the present application is not limited to the specific implementation thereof. Such as predefined may refer to what is defined in the protocol. It should also be understood that, in the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and may include, for example, an NR protocol and related protocols applied in future communication systems, which is not limited by the present application.
In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description describes related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the protection scope of the embodiments of the present application.
In the uplink power control mechanism, the power control of the uplink channel and the uplink signal is determined with reference to the downlink reference signal (DL RS) of the serving cell. Examples of the uplink channel and uplink signal include: physical random access channel (Physical Random Access Channel, PRACH), physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), physical uplink control channel (Physical Uplink Control Channel, PUCCH), sounding reference signal (Sounding Reference Signal, SRS).
Taking PRACH as an example, the uplink transmission power of PRACH may be calculated by the following formula (1):
P PRACH,b,f,c (i)＝min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c } (1)
where b represents a bandwidth Part (BWP) number, f represents a carrier (carrier) number, c represents a serving cell (serving cell) number, and i represents a transmission timing (transmission occasion) number. P (P) PRACH,b,f,c (i) The UE activates the uplink sending power of PRACH on UL BWP b at transmission time i based on DL RS of serving cell c, carrier f, unit is dBm; p (P) CMAX,f,c (i) The maximum output power configured for the UE on the carrier f at the transmission occasion i, serving cell c; p (P) PRACH,target,f,c Is the TARGET RECEIVED POWER of PRACH provided by the higher layer signaling preamble_received_target_power for serving cell c, carrier f, activated UL BWP b; PL (PL) b,f,c A path loss (pathloss) of the active UL BWP b for carrier f based on DL RS associated with PRACH transmission on the active DL BWP of the serving cell c; min represents the minimum value operation.
For PL in equation (1) b,f,c The calculation mode is as follows: reference signal power (reference SignalPower) -higher layer filtered RSRP, where the units of reference signal power and higher layer filtered RSRP are dBm, PL b,f,c In dB. For a special case, if the current active DL BWP is the initial downlink BWP (initial DL BWP) and the current synchronization signal Block (SS/PBCH Block, SSB) and the control resource set (Control Resource Set, CORESET) are multiplexed in pattern 2 or pattern3, the UE determines PL based on the SSB associated with PRACH transmission b,f,c 。
Taking PUSCH as an example, the uplink transmission power of PUSCH can be calculated by the following formula (2):
where b represents BWP number, f represents carrier number, c represents serving cell number, i represents a transmission opportunity number, J represents a parameter configuration index (J e (0, 1..once., J-1)), q d Represents the reference signal resource index (RS resource index), μ represents the subcarrier spacingNumbering. P (P) PUSCH,b,f,c (i,j,q d L) is uplink transmission power of the PUSCH on the activated UL BWP b at transmission time i, which is determined by the UE based on DL RS of the serving cell c and is located in the serving cell c, carrier f, and is expressed in dBm; p (P) CMAX,f,c (i) The maximum output power configured for the UE on the carrier f at the transmission occasion i, serving cell c; p (P) O_PUSCH,b,f,c (j) Equal to P O_NOMINAL_PUSCH,f,c (j) And P O_UE_PUSCH,b,f,c (j) The sum of the two parameters, the values of the two parameters respectively have different values according to different conditions, P O_NOMINAL_PUSCH,f,c (j) Is predefined or configured by high-level parameters, P O_UE_PUSCH,b,f,c (j) The value of (2) is configured through high-level parameters;the number of Resource Blocks (RBs) allocated to PUSCH transmission on the active UL BWP b at transmission occasion i, serving cell c, carrier f; alpha b,f,c (q d ) Is the path loss coefficient, alpha b,f,c (q d ) The value of (2) is configured by a high layer or is 0/1; PL (PL) b,f,c (q d ) The path loss of the active UL BWP b is based on the carrier f derived by the DL RS associated with PUSCH transmission on the active DL BWP of the serving cell c; and (V) TF,b,f,c (i) The PUSCH transmission power adjustment factor, delta, on UL BWP b is activated in serving cell c, carrier f TF,b,f,c (i) The values of (2) are respectively different according to different conditions; f (f) b,f,c (i, l) is the PUSCH power control adjustment status on the transmission occasion i, serving cell c, carrier f, active UL BWP b, f b,f,c The values of (i, l) are different according to different conditions.
Taking PUCCH as an example, the uplink transmit power of PUCCH can be calculated by the following equation (3):
wherein b represents BWP number, f represents carrier number, c represents serving cell number, i represents transmissionTime number, q d Represents a reference signal resource index and μ represents a subcarrier spacing number. P (P) PUCCH,b,f,c (i,q u ,q d L) is uplink transmission power of the PUCCH on UL BWP b at transmission occasion i, determined by the UE based on DL RS of serving cell c, at serving cell c, carrier f; p (P) CMAX,f,c (i) The maximum output power configured for the UE on the carrier f at the transmission occasion i, serving cell c; p (P) O_PUCCH,b,f,c (q u ) Equal to P O_NOMINAL_PUCCH And P O_UE_PUCCH (q u ) Sum of these two parameters, P O_NOMINAL_PUCCH Is configured by high-level parameters or is 0, P O_UE_PUCCH (q u ) The value of (2) is configured through high-level parameters;the number of RBs allocated to PUCCH transmission on the transmission occasion i, serving cell c, carrier f and active UL BWP b; PL (PL) b,f,c (q d ) The path loss of the active UL BWP b is based on the carrier f obtained by the DL RS associated with PUCCH transmission on the active DL BWP of the serving cell c; and (V) F_PUCCH (F) The values of (1) are different according to different conditions, specifically, for the case of PUCCH format 0, the value is delta F_PUCCH (F) The value of (a) is the value of a parameter deltaF-PUCCH-f0, and delta is calculated for the case of PUCCH format 1 F_PUCCH (F) The value of (a) is the value of a parameter deltaF-PUCCH-f1, and delta is calculated for the case of PUCCH format 2 F_PUCCH (F) The value of (a) is the value of a parameter deltaF-PUCCH-f2, and delta is calculated for the case of PUCCH format 3 F_PUCCH (F) The value of (a) is the value of a parameter deltaF-PUCCH-f3, and delta is calculated for the case of PUCCH format 4 F_PUCCH (F) The value of (a) is the value of a parameter deltaF-PUCCH-f4, and if the parameter deltaF-PUCCH-f0/1/2/3/4 is not configured, delta is calculated F_PUCCH (F) The value of (2) is 0; and (V) TF,b,f,c (i) The PUCCH transmission power adjustment factor, delta, on serving cell c, carrier f, active UL BWP b TF,b,f,c (i) The values of (2) are respectively different according to different conditions; g b,f,c (i, l) is to activate the PUCCH power control adjustment state on UL BWP b at transmission occasion i, serving cell c, carrier f，g b,f,c The values of (i, l) are different according to different conditions.
Taking SRS as an example, the uplink transmission power of SRS can be calculated by the following equation (4):
wherein b represents BWP number, f represents carrier number, c represents serving cell number, i represents transmission opportunity number, q s Represents the SRS resource set (SRS resource set) number, q d Represents a reference signal resource index and μ represents a subcarrier spacing number. P (P) SRS,b,f,c (i,q s L) is the uplink transmit power of the SRS on UL BWP b at transmission occasion i, determined by the UE based on DL RS of serving cell c, at serving cell c, carrier f; p (P) CMAX,f,c (i) The maximum output power configured for the UE on the carrier f at the transmission occasion i, serving cell c; p (P) O_SRS,b,f,c (q u ) The value of (2) is configured through high-level parameters; m is M SRS,b,f,c (i) The bandwidth (i.e., the number of RBs) allocated for SRS transmission on the transmission occasion i, serving cell c, carrier f, active UL BWP b; alpha SRS,b,f,c (q s ) The value of (2) is configured through high-level parameters; PL (PL) b,f,c (q d ) Is according to q d The calculated downlink path loss estimation; h is a b,f,c (i, l) is the SRS power control adjustment state, h, on transmission occasion i, serving cell c, carrier f, active UL BWP b b,f,c The values of (i, l) are different according to different conditions.
For PUSCH, PUCCH and SRS, a closed loop power control formula is also supported, the closed loop power control carries out power adjustment through TPC commands, the two modes of Accumulation mode and non-Accumulation mode are supported, and whether the Accumulation mode or the de-Accumulation mode is enabled or not can be determined through a TPC-Accumulation command.
For PUSCH, when the accumulation mode is enabled, f in equation (2) b,f,c (i, l) is calculated by the following equation (5), f in equation (2) when the accumulation mode is disabled b,f,c (i, l) is obtained byEquation (6) calculation:
f b,f,c (i,l)＝δ PUSCH,b,f,c (i,l) (6)
wherein,is the accumulated value of TPC values received over a range of times.
For PUCCH, g in equation (3) when accumulation mode is enabled b,f,c (i, l) is calculated by the following equation (7), g in equation (3) when the accumulation mode is disabled b,f,c (i, l) is calculated by the following formula (8):
g b,f,c (0,l)＝△P rampup,b,f,c +δ b,f,c (8)
wherein,is the accumulated value of TPC values received over a range of times.
For SRS, h in equation (4) b,f,c (i, l) also has different values, when SRS adopts the same power control adjustment as PUSCH, h b,f,c (i, l) is calculated by the following equation (9), h when PUSCH transmission is not configured or SRS and PUSCH are configured to be adjusted using independent power control b,f,c (i, l) is calculated by the following formula (10):
h b,f,c (i,l)＝f b,f,c (i,l) (9)
wherein,is the accumulated value of TPC values received over a range of times.
In the above scheme, δ of PUSCH PUSCH,b,f,c Delta of SRS SRS,b,f,c The values of (2) are shown in Table 1 below:
TPC command field Accumulating delta PUSCH,b,f,c Or delta SRS,b,f,c [dB] Absolute delta PUSCH,b,f,c Or delta SRS,b,f,c [dB]
0 -1 -4
1 0 -1
2 1 1
3 3 4
TABLE 1
In the above scheme, delta of PUCCH PUCCH,b,f,c The values of (2) are shown in the following table:
TPC command field Accumulating delta PUCCH,b,f,c [dB]
0 -1
1 0
2 1
3 3
TABLE 2
In order to reduce the energy consumption of the base station, the enhancement technology is introduced from the angles of time domain, frequency domain, space domain, power domain and the like in the future, so that the energy consumption of the base station is reduced. For the space domain aspect, a dynamic antenna number/port number self-adaptive technology is introduced, so that the turn-off of part of antennas according to the need is realized, and the energy consumption of a base station is reduced.
In the case of adopting the adaptive antenna/port number technique, the power of DL RS at the base station side is affected by the number of antennas/ports at the base station side. Taking DL RS as an example of a channel state information Reference Signal (CSI-RS), since the mapping manner of CSI-RS ports varies with the number of CSI-RS ports, the mapping manner of CSI-RS to each transmitting remote unit (TxRU) may vary, and thus, in the case of adopting the adaptive antenna/port number technique, when a base station turns off part of antenna ports, the power corresponding to the ports may be reduced. Taking the mapping manner shown in fig. 2 as an example, the base station has 64 txrus, the CSI-RS is 16 ports, the 4 txrus are mapped to the same port, and fig. 2 illustrates that the 4 txrus in the same vertical direction are mapped to the same port. When the base station turns off half of the TxRU, the power per port will be halved as shown in fig. 3. Similarly for the case where DL RS is SSB, SSB is single-port transmission, all txrus of the base station are mapped to the same port, and when the base station turns off half of the txrus, the power of the port is also halved.
In the uplink power control mechanism, the path loss is involved in a formula of calculating uplink transmission power by the terminal, and the calculation mode of the path loss is as follows: reference signal power (reference signalpower) -high-layer filtered RSRP, where reference signal power (reference signalpower) refers to the transmit power of DL RS, and the parameter is configured by RRC and does not dynamically change, and high-layer filtered RSRP refers to the UE-filtered RSRP value. However, in the case of adopting the adaptive antenna/port number technique, the transmission power of DL RSs at the base station side may be affected by the number of antennas/ports at the base station side, and if the uplink transmission power is calculated in a targeted manner, the calculated uplink transmission power may be inaccurate. For example: in the case of adaptive antenna/port number technology, the reference signal power (reference signal power) is a fixed value configured by RRC, if the base station turns off part of the antennas, this will result in the RSRP after higher layer filtering to be reduced, and the path loss calculated by the terminal will be higher than the actual value. However, when the uplink and downlink antennas are independently turned off, for example, the base station turns off only a part of the downlink transmitting antennas, and does not turn off the uplink receiving antennas (the uplink receiving power consumption is far less than the downlink transmitting power consumption), the terminal performs uplink power control with this higher path loss, which results in higher uplink transmitting power and increased uplink interference.
For this reason, the following technical solutions of the embodiments of the present application are provided. The technical scheme of the embodiment of the application aims to solve the problem of inaccurate uplink power control under the condition of adopting the self-adaptive antenna/port number technology.
In order to facilitate understanding of the technical solution of the embodiments of the present application, the technical solution of the present application is described in detail below through specific embodiments. The above related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.
Fig. 4 is a flow chart of a power control method according to an embodiment of the present application, as shown in fig. 4, where the power control method includes:
step 401: the terminal acquires first configuration information, wherein the first configuration information is used for configuring a corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to a state of an antenna and/or a port of the network equipment.
Step 402: the terminal determines a value of a power control parameter corresponding to a first transmission state based on the first configuration information, and determines uplink transmission power based on the value of the power control parameter.
In the embodiment of the application, the network equipment sends the first configuration information, and correspondingly, the terminal acquires the first configuration information, wherein the network equipment can be a base station. The first configuration information is used for configuring a corresponding relation between a downlink transmission state and a power control parameter value. Here, the downlink transmission state refers to a state of an antenna and/or a port of the network device. Alternatively, the downlink transmission state may also be referred to as an antenna/port adaptation state.
In some alternative embodiments, the first configuration information is carried in radio resource control (Radio Resource Control, RRC) signaling or in a system message.
In the embodiment of the application, after the terminal acquires the first configuration information, the value of the power control parameter corresponding to the first transmission state is determined based on the first configuration information, and the uplink transmission power is determined based on the value of the power control parameter.
Here, the first transmission state may be a current transmission state of the network device, and the terminal may determine the current transmission state of the network device by: the network equipment sends first indication information, and the terminal acquires the first indication information, wherein the first indication information is used for indicating the first transmission state. Optionally, the first indication information is carried in a media access Control (Media Access Control, MAC) Control Element (CE) or downlink Control information (Downlink Control Information, DCI). As an alternative, the MAC CE is transmitted by broadcast or multicast means. As an alternative, the DCI is transmitted through a group common control channel; alternatively, the DCI is transmitted through a UE-specific control channel.
Here, the network device may dynamically change the downlink transmission state. As one way, the network device may indicate the current downlink transmission state of the network device by carrying the first indication information in the MAC CE, where the MAC CE is carried by the PDSCH and is insensitive to the overhead of the first indication information. As another implementation manner, the network device may indicate the current downlink transmission state of the network device by carrying the first indication information in the DCI, which can implement more dynamic and flexible notification. Further, to reduce the overhead of dynamic indication, common signaling may be used for indication, for example, for indication of MAC CE, broadcast or multicast transmission may be used, for example, for DCI, transmission may be performed through a group common control channel. Of course, if the user currently has data to schedule transmission, it may be indicated by adding a bit in the scheduling DCI.
In the embodiment of the application, the terminal determines the minimum value of a first value and a second value as uplink transmission power, wherein the first value is the value of the maximum output power configured by the terminal, the second value is the value of a first formula, and the value of the first formula is determined based on the value of the power control parameter. It can be seen that the determination of the uplink transmission power is related to the power control parameter, and the power control parameter has a corresponding relationship with the downlink transmission state of the network device, so that the downlink transmission state of the network device is considered by the uplink transmission power determined by the terminal. Here, the calculation formula of the uplink transmission power may be expressed as the following formula:
Specific implementations of the power control parameters are described below in connection with different schemes.
Scheme one
The parameters in the first equation are determined based on the power control parameters.
Scheme 1-1) in some alternative embodiments, the parameter in the first formula includes a path loss, and the power control parameter refers to a first power offset parameter, wherein a value of the path loss is determined based on a value of the first power offset parameter. Here, the path loss is equal to the reference signal power minus the higher layer filtered RSRP value and the first power offset parameter.
It should be noted that, the value of the first power offset parameter may be a positive value or a negative value. In the case where the value of the first power offset parameter is a positive value (referred to as case 1), the path loss is equal to the reference signal power minus the RSRP value after higher layer filtering and the first power offset parameter. In the case where the value of the first power offset parameter is negative (referred to as case 2), the path loss is equal to the reference signal power minus the absolute value of the RSRP value after higher layer filtering plus the first power offset parameter. Here, the calculation formula of the path loss may be expressed as the following formula:
Scheme 1-1) above may be applied to any uplink channel and uplink signal, such as PRACH, PUSCH, PUCCH, SRS.
For PRACH, equation (12) can be taken to be PL in equation (1) b,f,c Thereby calculating the uplink transmission power of the PRACH.
For PUSCH, equation (12) can be taken to be PL in equation (2) b,f,c (q d ) Thereby calculating the uplink transmission power of the PUSCH.
For PUCCH, equation (12) can be taken to be PL in equation (3) b,f,c (q d ) Thereby calculating uplink transmission of PUCCHPower.
For SRS, equation (12) can be brought into PL in equation (4) b,f,c (q d ) Thereby calculating the uplink transmission power of the SRS.
For the first power offset parameter in the formula (12), the network device configures a correspondence between the downlink transmission state and the value of the first power offset parameter. Specifically, when the network device configures a reference signal power (reference signal power) for calculating the path loss, if a downlink transmission state corresponding to the reference signal power is a situation that the antenna/port is not turned off, the network device will take a value corresponding to a different first power offset parameter when turning off a different number of antennas/ports. As an example: the downlink transmission state corresponding to the network equipment configuration reference signal power is 64TxRU, the first power offset parameters corresponding to the network equipment configuration downlink transmission states are 32TxRU,16TxRU and 8TxRU respectively are 3dB,6dB and 12dB. When the terminal calculates the uplink transmission power, it needs to calculate the path loss first, for example, when the current downlink transmission state of the network device is 32TxRU, the value of the first power offset parameter is 3dB, and the terminal calculates the path loss according to formula (12), so that the calculated path loss considers the loss of the transmission power, and when the path loss is used to calculate the uplink transmission power, the uplink transmission power conforming to the actual situation can be obtained.
Scheme 1-2) in some alternative embodiments, the parameters in the first formula include a first parameter equal to a first Po parameter plus a second Po parameter, wherein the power control parameter is the first Po parameter or the second Po parameter.
The above schemes 1-2) can be applied to PUSCH. For PUSCH, the first parameter is P O_PUSCH,b,f,c (j) The first Po parameter is P O_NOMINAL_PUSCH,f,c (j) The second Po parameter is P O_UE_PUSCH,b,f,c (j)，P O_PUSCH,b,f,c (j) Equal to P O_NOMINAL_PUSCH,f,c (j) And P O_UE_PUSCH,b,f,c (j) The sum of these two parameters, the value of the first Po parameter being predefined or configured by a higher layer parameter, the value of the second Po parameter being configured by a higher layer parameter.Here, the first Po parameter or the second Po parameter may be used as a power control parameter, so that a value of the first Po parameter or the second Po parameter corresponds to a downlink transmission state.
Specifically, for P in formula (2) O_PUSCH,b,f,c (j) Equal to P O_NOMINAL_PUSCH,f,c (j) And P O_UE_PUSCH,b,f,c (j) The sum of these two parameters, the network device configures the downlink transmission status and P O_NOMINAL_PUSCH,f,c (j) Corresponding relation between values or configuration of downlink transmission state and P O_UE_PUSCH,b,f,c (j) And the corresponding relation between the values. When the terminal calculates the uplink transmission power of the PUSCH according to the formula (2), it can obtain the uplink transmission power corresponding to the downlink transmission state.
The above scheme 1-2) may be applied to PUCCH. For PUCCH, the first parameter is P O_PUCCH,b,f,c (q u ) The first Po parameter is P O_NOMINAL_PUCCH The second Po parameter is P O_UE_PUCCH (q u )，P O_PUCCH,b,f,c (q u ) Equal to P O_NOMINAL_PUCCH And P O_UE_PUCCH (q u ) The sum of the two parameters, the value of the first Po parameter is configured by a high-level parameter or is 0, and the value of the second Po parameter is configured by the high-level parameter. Here, the first Po parameter or the second Po parameter may be used as a power control parameter, so that a value of the first Po parameter or the second Po parameter corresponds to a downlink transmission state.
Specifically, for P in formula (3) O_NOMINAL_PUCCH Equal to P O_NOMINAL_PUCCH And P O_UE_PUCCH (q u ) The sum of these two parameters, the network device configures the downlink transmission status and P O_NOMINAL_PUCCH Corresponding relation between values or configuration of downlink transmission state and P O_UE_PUCCH (q u ) And the corresponding relation between the values. When the terminal calculates the uplink transmission power of the PUCCH according to equation (3), the terminal can obtain the uplink transmission power corresponding to the downlink transmission state.
Schemes 1-3) in some alternative embodiments, the parameters in the first equation include a second parameter, the power control parameter refers to a second power offset parameter,
in a first case, the second parameter is equal to a first power value plus an accumulated value of power adjustment values and the second power offset parameter;
In a second case, the second parameter is equal to a first power adjustment value plus the second power offset parameter;
wherein the power adjustment value is determined based on a transmit power control (Transmit Power Control, TPC) value, the TPC value being carried in a TPC command. Here, the first case is a case where the power accumulation mode is enabled, and the second case is a case where the power accumulation mode is disabled.
The above schemes 1-3) can be applied to PUSCH. For PUSCH, the second parameter is f b,f,c (i,l)。
The above schemes 1-3) may be applied to PUCCH. For PUCCH, the second parameter is g b,f,c (i,l)。
The above schemes 1 to 3) can be applied to SRS. For SRS, the second parameter is h b,f,c (i,l)。
Note that, the accumulated value of the power adjustment values may be a positive value or a negative value; the second power offset parameter may be a positive value or a negative value. In the case where the accumulated value of the power adjustment values is a positive value and the second power offset parameter is a positive value, for the first case described above, the second parameter is equal to the first power value plus the accumulated value of the power adjustment values and the second power offset parameter; in the case where the accumulated value of the power adjustment values is a negative value and the second power offset parameter is a positive value, for the first case described above, the second parameter is equal to the first power value minus the absolute value of the accumulated value of the power adjustment values plus the second power offset parameter; in the case where the accumulated value of the power adjustment values is a negative value and the second power offset parameter is a negative value, for the first case described above, the second parameter is equal to the first power value minus the absolute value of the accumulated value of the power adjustment values and the absolute value of the second power offset parameter; in the case where the accumulated value of the power adjustment values is a positive value and the second power offset parameter is a negative value, for the first case described above, the second parameter is equal to the first power value plus the accumulated value of the power adjustment values minus the absolute value of the second power offset parameter.
For the PUSCH, the PUCCH and the SRS support the formula of closed-loop power control, the closed-loop power control carries out power adjustment through TPC commands, supports the Accumulation mode and the non-Accumulation mode, and can determine whether to enable the Accumulation mode or disable the power Accumulation mode through a TPC-Accumulation command.
For PUSCH, at the second parameter f of PUSCH b,f,c (i, l) introducing a second power offset parameterSpecifically, when the accumulation mode is enabled, the formula (5) is modified to the following formula (13), and when the accumulation mode is disabled, the formula (6) is modified to the following formula (14):
for PUCCH, at the second parameter g of PUCCH b,f,c (i, l) introducing a second power offset parameterSpecifically, when the accumulation mode is enabled, the formula (7) is modified to the following formula (15), and when the accumulation mode is disabled, the formula (8) is modified to the following formula (16): />
For SRS, at the second reference of SRSNumber h b,f,c (i, l) introducing a second power offset parameterSpecifically, the formula (9) is modified to the following formula (17), and when the accumulation mode is disabled, the formula (10) is modified to the following formula (18):
note that, the names of the second power offset parameters in the above scheme are not limited, and may also beReplaced by->
For closed loop power control PUSCH, PUCCH, SRS, when dynamic antenna/port number change is initiated, a match to the antenna/port number (i.e., downlink transmission state) can be configured or defined Or->Take the values, as an example, txRU number and +.>Or->The correspondence between the values is shown in table 3 below.
TABLE 3 Table 3
Scheme II
The parameters in the first equation include the power control parameters.
Scheme 2-1) in some alternative embodiments, the parameters in the first formula further comprise a path loss, the power control parameter is a first power offset parameter, wherein the path loss and the first power offset parameter form a first sub-formula in the first formula. The path loss is equal to the reference signal power minus the RSRP value after higher layer filtering.
Here, the first sub-formula is the path loss minus the first power offset parameter.
It should be noted that, the value of the first power offset parameter may be a positive value or a negative value. And under the condition that the value of the first power offset parameter is a positive value, the first sub-formula is that the path loss is subtracted by the first power offset parameter. And under the condition that the value of the first power offset parameter is a negative value, the first sub-formula is the absolute value of the path loss plus the first power offset parameter.
Scheme 2-1) above may be applied to any uplink channel and uplink signal, such as PRACH, PUSCH, PUCCH, SRS.
For PRACH, equation (1) may be modified to the following equation:
P PRACH,b,f,c (i)＝min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c -P offset } (19)
wherein P is offset For the first power offset parameter, the meaning of the other parameters may be described with reference to formula (1).
For PUSCH, equation (2) may be modified to the following equation:
wherein P is offset For the first power offset parameter, the meaning of the other parameters may be described with reference to formula (2).
For PUCCH, equation (3) may be modified to the following equation:
wherein P is offset For the first power offset parameter, the meaning of the other parameters may be described with reference to formula (3).
For SRS, equation (4) can be modified to the following equation:
wherein P is offset For the first power offset parameter, the meaning of the other parameters may be described with reference to equation (4).
Scheme 2-2) in some alternative embodiments, the power control parameter refers to a target received power for PRACH. Here, the target received power is P PRACH,target,f,c The target received power may be used as a power control parameter, so as to achieve that the value of the target received power corresponds to the downlink transmission state.
Specifically, for P in formula (1) PRACH,target,f,c Network equipment configures downlink transmission state and P PRACH,target,f,c And the corresponding relation between the values. When the terminal calculates the uplink transmission power of the PRACH according to the formula (1), the terminal can obtain the uplink transmission power corresponding to the downlink transmission state.
Scheme 2-3) in some alternative embodiments, the power control parameter refers to a third Po parameter for SRS. Here, the third Po parameter is P O_SRS,b,f,c (q u ) The third Po parameter may be used as a power control parameter, so as to achieve that a value of the third Po parameter corresponds to the downlink transmission state.
Specifically, for P in formula (4) O_SRS,b,f,c (q u )，Network equipment configured downlink transmission state and P O_SRS,b,f,c (q u ) And the corresponding relation between the values. When the terminal calculates the uplink transmission power of the SRS according to equation (4), the terminal can obtain the uplink transmission power corresponding to the downlink transmission state.
The technical scheme of the embodiment of the application can make up the path loss caused by the change of the dynamic antenna/port number or the uplink receiving power exceeding the target receiving power caused by inaccurate calculation of the uplink sending power, and avoid increasing unnecessary uplink interference.
Fig. 5 is a schematic diagram of the structural components of a power control device according to an embodiment of the present application, which is applied to a terminal, as shown in fig. 5, and the power control device includes:
an obtaining unit 501, configured to obtain first configuration information, where the first configuration information is used to configure a correspondence between a downlink transmission state and a power control parameter value, where the downlink transmission state refers to a state of an antenna and/or a port of a network device;
A determining unit 502, configured to determine a value of a power control parameter corresponding to the first transmission state based on the first configuration information, and determine uplink transmission power based on the value of the power control parameter.
In some optional embodiments, the determining unit 502 is configured to determine a minimum value of a first value and a second value as an uplink transmission power, where the first value is a value of a maximum output power configured by the terminal, the second value is a value of a first formula, and the value of the first formula is determined based on the value of the power control parameter.
In some alternative embodiments, the parameters in the first formula are determined based on the power control parameters.
In some alternative embodiments, the parameter in the first formula includes the power control parameter.
In some alternative embodiments, the parameter in the first formula includes a path loss, and the power control parameter refers to a first power offset parameter, wherein a value of the path loss is determined based on a value of the first power offset parameter.
In some alternative embodiments, the path loss is equal to a reference signal power minus a higher layer filtered rate RSRP value and the first power offset parameter.
In some alternative embodiments, the parameters in the first formula include a first parameter equal to a first Po parameter plus a second Po parameter, wherein the power control parameter is the first Po parameter or the second Po parameter.
In some alternative embodiments, for PUSCH, the value of the first Po parameter is predefined or configured by a higher layer parameter, and the value of the second Po parameter is configured by a higher layer parameter.
In some alternative embodiments, for PUCCH, the value of the first Po parameter is configured by a higher layer parameter or is 0, and the value of the second Po parameter is configured by a higher layer parameter.
In some alternative embodiments, the parameters in the first formula include a second parameter, the power control parameter refers to a second power offset parameter, and in the first case, the second parameter is equal to a first power value plus an accumulated value of power adjustment values and the second power offset parameter; in a second case, the second parameter is equal to a first power adjustment value plus the second power offset parameter; wherein the power adjustment value is determined based on a TPC value carried in a TPC command.
In some alternative embodiments, the first condition is a condition in which the power accumulation mode is enabled, and the second condition is a condition in which the power accumulation mode is disabled.
In some alternative embodiments, the parameters in the first formula further include a path loss, and the power control parameter refers to a first power offset parameter, wherein the path loss and the first power offset parameter form a first sub-formula in the first formula.
In some alternative embodiments, the first sub-formula is the path loss minus the first power offset parameter. Here, the path loss is equal to the reference signal power minus the higher layer filtered RSRP value.
In some alternative embodiments, for PRACH, the power control parameter refers to a target received power.
In some alternative embodiments, for SRS, the power control parameter refers to a third Po parameter.
In some optional embodiments, the obtaining unit 501 is further configured to obtain first indication information, where the first indication information is used to indicate the first transmission state.
In some optional embodiments, the first indication information is carried in a MAC CE or DCI.
In some alternative embodiments, the MAC CE is transmitted by broadcast or multicast means.
In some alternative embodiments, the DCI is transmitted over a group common control channel; alternatively, the DCI is transmitted through a UE-specific control channel.
In some alternative embodiments, the first configuration information is carried in radio resource control RRC signaling or in a system message.
Those skilled in the art will appreciate that the implementation functions of the units in the power control apparatus shown in fig. 5 can be understood with reference to the relevant description of the foregoing method. The functions of the respective units in the power control apparatus shown in fig. 5 may be realized by a program running on a processor or by a specific logic circuit.
Fig. 6 is a schematic diagram ii of the structural composition of a power control device according to an embodiment of the present application, which is applied to a network device, as shown in fig. 6, where the power control device includes:
the sending unit 601 is configured to send first configuration information, where the first configuration information is used to configure a correspondence between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to a state of an antenna and/or a port of the network device.
In some optional embodiments, the sending unit 601 is further configured to send first indication information, where the first indication information is used to indicate a first transmission state of the network device.
In some optional embodiments, the first indication information is carried in a MAC CE or DCI.
In some alternative embodiments, the MAC CE is transmitted by broadcast or multicast means.
In some alternative embodiments, the DCI is transmitted over a group common control channel; alternatively, the DCI is transmitted through a UE-specific control channel.
In some alternative embodiments, the first configuration information is carried in RRC signaling or in a system message.
Those skilled in the art will appreciate that the implementation functions of the units in the power control apparatus shown in fig. 6 can be understood with reference to the relevant description of the foregoing method. The functions of the respective units in the power control apparatus shown in fig. 6 may be realized by a program running on a processor or by a specific logic circuit.
Fig. 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application. The communication device may be a terminal or a network device and the communication device 700 shown in fig. 7 comprises a processor 710, the processor 710 may call and run a computer program from a memory to implement the method in the embodiments of the present application.
Optionally, as shown in fig. 7, the communication device 700 may further comprise a memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application.
Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.
Optionally, as shown in fig. 7, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices.
Among other things, transceiver 730 may include a transmitter and a receiver. Transceiver 730 may further include antennas, the number of which may be one or more.
Optionally, the communication device 700 may be specifically a network device according to an embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the network device in each method according to an embodiment of the present application, which is not described herein for brevity.
Optionally, the communication device 700 may be specifically a mobile terminal/terminal according to an embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the mobile terminal/terminal in each method according to the embodiment of the present application, which is not described herein for brevity.
Fig. 8 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 800 shown in fig. 8 includes a processor 810, and the processor 810 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 8, chip 800 may also include memory 820. Wherein the processor 810 may call and run a computer program from the memory 820 to implement the method in embodiments of the present application.
Wherein the memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.
Optionally, the chip 800 may also include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.
Optionally, the chip 800 may further include an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.
Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.
Optionally, the chip may be applied to a mobile terminal/terminal in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is not described herein for brevity.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.
It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The embodiment of the application also provides a computer readable storage medium for storing a computer program.
Optionally, the computer readable storage medium may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.
Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal in each method of the embodiment of the present application, which is not described herein for brevity.
The embodiment of the application also provides a computer program product comprising computer program instructions.
Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present application, which are not described herein for brevity.
Optionally, the computer program product may be applied to a mobile terminal/terminal in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal in each method of the embodiment of the present application, which are not described herein for brevity.
The embodiment of the application also provides a computer program.
Optionally, the computer program may be applied to a network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.
Optionally, the computer program may be applied to a mobile terminal/terminal in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is not described herein for brevity.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (33)

1. A method of power control, the method comprising:
the terminal acquires first configuration information, wherein the first configuration information is used for configuring the corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to the state of an antenna and/or a port of the network equipment;
the terminal determines a value of a power control parameter corresponding to a first transmission state based on the first configuration information, and determines uplink transmission power based on the value of the power control parameter.
2. The method of claim 1, wherein the determining uplink transmit power based on the value of the power control parameter comprises:
and the terminal determines the minimum value of a first value and a second value as uplink transmission power, wherein the first value is the value of the maximum output power configured by the terminal, the second value is the value of a first formula, and the value of the first formula is determined based on the value of the power control parameter.
3. The method of claim 2, wherein the parameters in the first formula are determined based on the power control parameters.
4. The method of claim 2, wherein the parameters in the first formula comprise the power control parameters.
5. The method of claim 3, wherein the parameters in the first equation comprise path loss, and wherein the power control parameter is a first power offset parameter, wherein,
the value of the path loss is determined based on the value of the first power offset parameter.
6. The method of claim 5, wherein the path loss is equal to a reference signal power minus a higher layer filtered reference signal received power RSRP value and the first power offset parameter.
7. The method of claim 3, wherein the parameters in the first formula comprise a first parameter equal to a first Po parameter plus a second Po parameter, wherein,
the power control parameter is the first Po parameter or the second Po parameter.
8. The method of claim 7, wherein the step of determining the position of the probe is performed,
for a physical uplink shared channel PUSCH, the value of the first Po parameter is predefined or configured by a higher layer parameter, and the value of the second Po parameter is configured by a higher layer parameter.
9. The method of claim 7, wherein the step of determining the position of the probe is performed,
for the physical uplink control channel PUCCH, the value of the first Po parameter is configured by a higher layer parameter or is 0, and the value of the second Po parameter is configured by a higher layer parameter.
10. The method of claim 3, wherein the parameters in the first formula comprise a second parameter, the power control parameter is a second power offset parameter,
in a first case, the second parameter is equal to a first power value plus an accumulated value of power adjustment values and the second power offset parameter;
in a second case, the second parameter is equal to a first power adjustment value plus the second power offset parameter;
wherein the power adjustment value is determined based on a transmit power control, TPC, value carried in a TPC command.
11. The method of claim 10, wherein the step of determining the position of the first electrode is performed,
the first case is a case where the power accumulation mode is enabled, and the second case is a case where the power accumulation mode is disabled.
12. The method of claim 4, wherein the parameters in the first equation further comprise path loss, and wherein the power control parameter is a first power offset parameter, wherein,
The path loss and the first power offset parameter form a first sub-formula in the first formula.
13. The method of claim 12, wherein the first sub-formula is the path loss minus the first power offset parameter.
14. The method of claim 13, wherein the path loss is equal to a reference signal power minus a higher layer filtered RSRP value.
15. The method of claim 4, wherein the power control parameter is a target received power for a physical random access channel, PRACH.
16. The method of claim 4, wherein for a sounding reference signal, SRS, the power control parameter is a third Po parameter.
17. The method according to any one of claims 1 to 16, further comprising:
the terminal acquires first indication information, wherein the first indication information is used for indicating the first transmission state.
18. The method according to claim 17, wherein the first indication information is carried in a medium access control MAC control element CE or downlink control information DCI.
19. The method of claim 18, wherein the MAC CE is transmitted by broadcast or multicast.
20. The method of claim 18, wherein the step of providing the first information comprises,
the DCI is transmitted through a group public control channel; or,
the DCI is transmitted through a UE-specific control channel.
21. The method according to any of claims 1 to 16, wherein the first configuration information is carried in radio resource control, RRC, signaling or in a system message.
22. A method of power control, the method comprising:
the network device sends first configuration information, wherein the first configuration information is used for configuring the corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to the state of an antenna and/or a port of the network device.
23. The method of claim 22, wherein the method further comprises:
the network device sends first indication information, wherein the first indication information is used for indicating a first transmission state of the network device.
24. The method of claim 23, wherein the first indication information is carried in a MAC CE or DCI.
25. The method of claim 24, wherein the MAC CE is transmitted by broadcast or multicast.
26. The method of claim 24, wherein the step of determining the position of the probe is performed,
the DCI is transmitted through a group public control channel; or,
the DCI is transmitted through a UE-specific control channel.
27. The method according to any of the claims 22 to 26, characterized in that the first configuration information is carried in RRC signaling or in a system message.
28. A power control apparatus for use in a terminal, the apparatus comprising:
the device comprises an acquisition unit, a power control unit and a control unit, wherein the acquisition unit is used for acquiring first configuration information, the first configuration information is used for configuring the corresponding relation between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to the state of an antenna and/or a port of network equipment;
and the determining unit is used for determining the value of the power control parameter corresponding to the first transmission state based on the first configuration information and determining the uplink transmission power based on the value of the power control parameter.
29. A power control apparatus for use with a network device, the apparatus comprising:
the transmitting unit is configured to transmit first configuration information, where the first configuration information is used to configure a correspondence between a downlink transmission state and a power control parameter value, and the downlink transmission state refers to a state of an antenna and/or a port of the network device.
30. A terminal, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory to perform the method of any of claims 1 to 21.
31. A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 22 to 27.
32. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 21 or the method of any one of claims 22 to 27.
33. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 21 or the method of any one of claims 22 to 27.
CN202210448392.2A 2022-04-26 2022-04-26 Power control method and device, terminal and network equipment Pending CN117015018A (en)

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